feat(sdk-js): add onLangChainEvent and onDebugEvent to useStream (#4453 )

feat(sdk-js): pass the client instead of apiKey/apiUrl (#4452 )
release: v0.4.0 (#4447 )
2026-08-18 05:35:43 +02:00 · 2025-04-29 15:40:09 +02:00 · 2025-04-29 15:38:47 +02:00 · 2025-04-29 09:35:04 -04:00 · 2025-04-29 15:34:03 +02:00 · 2025-04-29 15:17:55 +02:00
97 changed files with 4492 additions and 3084 deletions
@@ -88,10 +88,11 @@ def has_blocklisted_command(code: str, metadata: dict) -> bool:
            return True
    return False

-def add_mermaid_retries(code: str) -> str:
+def remove_mermaid(code: str) -> str:
    return code.replace(
-        "draw_mermaid_png()",
-        "draw_mermaid_png(max_retries=10, retry_delay=2.0)"
+        "display(Image(graph.get_graph().draw_mermaid_png()))",
+        # replace with a dummy statement
+        "print()"
    )


@@ -188,12 +189,12 @@ def add_vcr_to_notebook(
    return notebook


-def add_mermaid_retries_to_notebook(notebook: nbformat.NotebookNode) -> nbformat.NotebookNode:
+def remove_mermaid_from_notebook(notebook: nbformat.NotebookNode) -> nbformat.NotebookNode:
    for cell in notebook.cells:
        if cell.cell_type != "code":
            continue

-        cell.source = add_mermaid_retries(cell.source)
+        cell.source = remove_mermaid(cell.source)
    return notebook


@@ -218,7 +219,7 @@ def process_notebooks(should_comment_install_cells: bool) -> None:
                            notebook, cassette_prefix=cassette_prefix
                        )

-                    notebook = add_mermaid_retries_to_notebook(notebook)
+                    notebook = remove_mermaid_from_notebook(notebook)

                    if notebook_path in NOTEBOOKS_NO_EXECUTION:
                        # Add a cell at the beginning to indicate that this notebook should not be executed
@@ -1 +0,0 @@
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@@ -1 +1 @@
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@@ -1 +1 @@
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@@ -1 +1 @@
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
@@ -194,7 +194,7 @@ agent.invoke(
 )
 ```

-1. The `InMemoryStore` is a store that stores data in memory. In a production setting, you would typically use a database or other persistent storage. Please review the [store documentation](../reference/stores.md) for more options. If you're deploying with **LangGraph Platform**, the platform will provide a production-ready store for you.
+1. The `InMemoryStore` is a store that stores data in memory. In a production setting, you would typically use a database or other persistent storage. Please review the [store documentation](../reference/store.md) for more options. If you're deploying with **LangGraph Platform**, the platform will provide a production-ready store for you.
 2. For this example, we write some sample data to the store using the `put` method. Please see the [BaseStore.put][langgraph.store.base.BaseStore.put] API reference for more details.
 3. The first argument is the namespace. This is used to group related data together. In this case, we are using the `users` namespace to group user data.
 4. A key within the namespace. This example uses a user ID for the key.
@@ -245,7 +245,7 @@ agent.invoke(
 store.get(("users",), "user_123").value
 ```

-1. The `InMemoryStore` is a store that stores data in memory. In a production setting, you would typically use a database or other persistent storage. Please review the [store documentation](../reference/stores.md) for more options. If you're deploying with **LangGraph Platform**, the platform will provide a production-ready store for you.
+1. The `InMemoryStore` is a store that stores data in memory. In a production setting, you would typically use a database or other persistent storage. Please review the [store documentation](../reference/store.md) for more options. If you're deploying with **LangGraph Platform**, the platform will provide a production-ready store for you.
 2. The `UserInfo` class is a `TypedDict` that defines the structure of the user information. The LLM will use this to format the response according to the schema.
 3. The `save_user_info` function is a tool that allows an agent to update user information. This could be useful for a chat application where the user wants to update their profile information.
 4. The `get_store` function is used to access the store. You can call it from anywhere in your code, including tools and prompts. This function returns the store that was passed to the agent when it was created.
@@ -1,7 +1,7 @@
 # Running agents


-Agents support both synchronous and asynchronous execution using either `.invoke()` / `await .invoke()` for full responses, or `.stream()` / `.astream()` for **incremental** [streaming](#streaming) output. This section explains how to provide input, interpret output, enable streaming, and control execution limits.
+Agents support both synchronous and asynchronous execution using either `.invoke()` / `await .invoke()` for full responses, or `.stream()` / `.astream()` for **incremental** [streaming](streaming.md) output. This section explains how to provide input, interpret output, enable streaming, and control execution limits.


 ## Basic usage
@@ -40,6 +40,14 @@ Example `package.json` file:
 }
 ```

+When deploying your app, the dependencies will be installed using the package manager of your choice, provided they adhere to the compatible version ranges listed below:
+
+```
+"@langchain/core": "^0.3.42",
+"@langchain/langgraph": "^0.2.57",
+"@langchain/langgraph-checkpoint": "~0.0.16",
+```
+
 Example file directory:

 ```bash
@@ -82,14 +90,10 @@ import { ChatOpenAI } from "@langchain/openai";
 import { MessagesAnnotation, StateGraph } from "@langchain/langgraph";
 import { ToolNode } from "@langchain/langgraph/prebuilt";

-const tools = [
-  new TavilySearchResults({ maxResults: 3, }),
-];
+const tools = [new TavilySearchResults({ maxResults: 3 })];

 // Define the function that calls the model
-async function callModel(
-  state: typeof MessagesAnnotation.State,
-) {
+async function callModel(state: typeof MessagesAnnotation.State) {
  /**
   * Call the LLM powering our agent.
   * Feel free to customize the prompt, model, and other logic!
@@ -101,9 +105,9 @@ async function callModel(
  const response = await model.invoke([
    {
      role: "system",
-      content: `You are a helpful assistant. The current date is ${new Date().getTime()}.`
+      content: `You are a helpful assistant. The current date is ${new Date().getTime()}.`,
    },
-    ...state.messages
+    ...state.messages,
  ]);

  // MessagesAnnotation supports returning a single message or array of messages
@@ -141,10 +145,7 @@ const workflow = new StateGraph(MessagesAnnotation)
    routeModelOutput,
    // List of the possible destinations the conditional edge can route to.
    // Required for conditional edges to properly render the graph in Studio
-    [
-      "tools",
-      "__end__"
-    ],
+    ["tools", "__end__"]
  )
  // This means that after `tools` is called, `callModel` node is called next.
  .addEdge("tools", "callModel");
@@ -155,6 +156,7 @@ export const graph = workflow.compile();
 ```

 !!! info "Assign `CompiledGraph` to Variable"
+
    The build process for LangGraph Cloud requires that the `CompiledGraph` object be assigned to a variable at the top-level of a JavaScript module (alternatively, you can provide [a function that creates a graph](./graph_rebuild.md)).

 Example file directory:
@@ -193,6 +195,7 @@ Example `langgraph.json` file:
 Note that the variable name of the `CompiledGraph` appears at the end of the value of each subkey in the top-level `graphs` key (i.e. `:<variable_name>`).

 !!! info "Configuration Location"
+
    The LangGraph API configuration file must be placed in a directory that is at the same level or higher than the TypeScript files that contain compiled graphs and associated dependencies.

 ## Next
@@ -22,7 +22,7 @@ To support this, LangGraph Studio, in combination with LangSmith, allows you to

 First navigate to the LangSmith trace. Here you should see a button to "Run in Studio".

-![Run in Studio](../img/run_in_studio.png){width=1200}
+![Run in Studio](img/run_in_studio.png){width=1200}

 This will prompt you to enter the url that your locally running agent is accessible at. Once provided, select "Clone thread locally". If you have multiple graphs in your agent, you will also be prompted to select a graph to clone this thread under.

@@ -0,0 +1,86 @@
+# Configurable Headers
+
+LangGraph allows runtime configuration to modify agent behavior and permissions dynamically. When using the [LangGraph Platform](../quick_start.md), you can pass this configuration in the request body (`config`) or specific request headers. This enables adjustments based on user identity or other request data (see the [configuration how-to](../../how-tos/configuration.ipynb) for more details on how to access within your graph).
+
+For privacy, control which headers are passed to the runtime configuration via the `http.configurable_headers` section in your `langgraph.json` file.
+
+Here's how to customize the included and excluded headers:
+
+```json
+{
+  "http": {
+    "configurable_headers": {
+      "include": ["x-user-id", "x-organization-id", "my-prefix-*"],
+      "exclude": ["authorization", "x-api-key"]
+    }
+  }
+}
+```
+
+
+The `include` and `exclude` lists accept exact header names or patterns using `*` to match any number of characters. For your security, no other regex patterns are supported.
+
+## Using within your graph
+
+You can access the included headers in your graph using the `config` argument of any node.
+
+```python
+def my_node(state, config):
+  organization_id = config["configurable"].get("x-organization-id")
+  ...
+```
+
+Or by fetching from context (useful in tools and or within other nested functions).
+
+```python
+from langgraph.config import get_config
+
+def search_everything(query: str):
+  organization_id = get_config()["configurable"].get("x-organization-id")
+  ...
+```
+
+
+You can even use this to dynamically compile the graph.
+
+```python
+# my_graph.py.
+import contextlib
+
+@contextlib.asynccontextmanager
+async def generate_agent(config):
+  organization_id = config["configurable"].get("x-organization-id")
+  if organization_id == "org1":
+    graph = ...
+    yield graph
+  else:
+    graph = ...
+    yield graph
+
+```
+
+```json
+{
+  "graphs": {"agent": "my_grph.py:generate_agent"}
+}
+```
+
+For more examples on how to use runtime configuration, check out the [configuration how-to](../../how-tos/configuration.ipynb).
+
+### Opt-out of configurable headers
+
+If you'd like to opt-out of configurable headers, you can simply set a wildcard pattern in the `exclude` list:
+
+```json
+{
+  "http": {
+    "configurable_headers": {
+      "exclude": ["*"]
+    }
+  }
+}
+```
+
+This will exclude all headers from being added to your run's configuration.
+
+Note that exclusions take precedence over inclusions.
@@ -1,12 +1,16 @@
-# How to Add Breakpoints
+# How to add static breakpoints

-When creating LangGraph agents, it is often nice to add a human-in-the-loop component.
-This can be helpful when giving them access to tools.
-Often in these situations you may want to manually approve an action before taking.
+!!! tip "Prerequisites"

-This can be in several ways, but the primary supported way is to add an "interrupt" before a node is executed.
-This interrupts execution at that node.
-You can then resume from that spot to continue.  
+    This guide assumes familiarity with the following concepts:
+
+    * [Breakpoints](../../concepts/breakpoints.md)
+    * [LangGraph Glossary](../../concepts/low_level.md)
+    
+
+Human-in-the-loop (HIL) interactions are crucial for [agentic systems](../../concepts/agentic_concepts.md#human-in-the-loop). [Breakpoints](../../concepts/low_level.md#breakpoints) are a common HIL interaction pattern, allowing the graph to stop at specific steps and seek human approval before proceeding (e.g., for sensitive actions).
+
+Breakpoints are built on top of LangGraph [checkpoints](../../concepts/low_level.md#persistence), which save the graph's state after each node execution. Checkpoints are saved in [threads](../../concepts/low_level.md#threads) that preserve graph state and can be accessed after a graph has finished execution. This allows for graph execution to pause at specific points, await human approval, and then resume execution from the last checkpoint.

 ## Setup

@@ -1,6 +1,14 @@
-# Review Tool Calls
+# How to review tool calls

-Human-in-the-loop (HIL) interactions are crucial for [agentic systems](https://langchain-ai.github.io/langgraph/concepts/agentic_concepts/#human-in-the-loop). A common pattern is to add some human in the loop step after certain tool calls. These tool calls often lead to either a function call or saving of some information. Examples include:
+!!! tip "Prerequisites"
+
+    This guide assumes familiarity with the following concepts:
+
+    * [Tool calling](https://python.langchain.com/docs/concepts/tool_calling/)
+    * [Human-in-the-loop](../../concepts/human_in_the_loop.md)
+    * [LangGraph Glossary](../../concepts/low_level.md)
+
+Human-in-the-loop (HIL) interactions are crucial for [agentic systems](../../concepts/agentic_concepts.md). A common pattern is to add some human in the loop step after certain tool calls. These tool calls often lead to either a function call or saving of some information. Examples include:

 - A tool call to execute SQL, which will then be run by the tool
 - A tool call to generate a summary, which will then be saved to the State of the graph
@@ -11,13 +19,46 @@ There are typically a few different interactions you may want to do here:

 1. Approve the tool call and continue
 2. Modify the tool call manually and then continue
-3. Give natural language feedback, and then pass that back to the agent instead of continuing
+3. Give natural language feedback, and then pass that back to the agent

-We can implement this in LangGraph using a [breakpoint](https://langchain-ai.github.io/langgraph/how-tos/human_in_the_loop/breakpoints/): breakpoints allow us to interrupt graph execution before a specific step. At this breakpoint, we can manually update the graph state taking one of the three options above
+
+We can implement these in LangGraph using the [`interrupt()`][langgraph.types.interrupt] function. `interrupt` allows us to stop graph execution to collect input from a user and continue execution with collected input:
+
+
+```python
+def human_review_node(state) -> Command[Literal["call_llm", "run_tool"]]:
+    # this is the value we'll be providing via Command(resume=<human_review>)
+    human_review = interrupt(
+        {
+            "question": "Is this correct?",
+            # Surface tool calls for review
+            "tool_call": tool_call
+        }
+    )
+
+    review_action, review_data = human_review
+
+    # Approve the tool call and continue
+    if review_action == "continue":
+        return Command(goto="run_tool")
+
+    # Modify the tool call manually and then continue
+    elif review_action == "update":
+        ...
+        updated_msg = get_updated_msg(review_data)
+        return Command(goto="run_tool", update={"messages": [updated_message]})
+
+    # Give natural language feedback, and then pass that back to the agent
+    elif review_action == "feedback":
+        ...
+        feedback_msg = get_feedback_msg(review_data)
+        return Command(goto="call_llm", update={"messages": [feedback_msg]})
+
+```

 ## Setup

-We are not going to show the full code for the graph we are hosting, but you can see it [here](../../how-tos/human_in_the_loop/review-tool-calls.ipynb#simple-usage) if you want to. Once this graph is hosted, we are ready to invoke it and wait for user input. 
+We are not going to show the full code for the graph we are hosting, but you can see it [here](../../how-tos/human_in_the_loop/review-tool-calls.ipynb). Once this graph is hosted, we are ready to invoke it and wait for user input. 

 ### SDK initialization

@@ -54,122 +95,9 @@ First, we need to setup our client so that we can communicate with our hosted gr
      --data '{}'
    ```

-## Example with no review
-
-Let's look at an example when no review is required (because no tools are called)
-
-=== "Python"
-
-    ```python
-    input = { 'messages':[{ "role":"user", "content":"hi!" }] }
-
-    async for chunk in client.runs.stream(
-        thread["thread_id"],
-        assistant_id,
-        input=input,
-        stream_mode="updates",
-        interrupt_before=["action"],
-    ):
-        if chunk.data and chunk.event != "metadata": 
-            print(chunk.data)
-    ```
-
-=== "Javascript"
-
-    ```js
-    const input = { "messages": [{ "role": "user", "content": "hi!" }] };
-
-    const streamResponse = client.runs.stream(
-      thread["thread_id"],
-      assistantId,
-      {
-        input: input,
-        streamMode: "updates",
-        interruptBefore: ["action"],
-      }
-    );
-
-    for await (const chunk of streamResponse) {
-      if (chunk.data && chunk.event !== "metadata") {
-        console.log(chunk.data);
-      }
-    }
-    ```
-
-=== "CURL"
-
-    ```bash
-    curl --request POST \
-     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
-     --header 'Content-Type: application/json' \
-     --data "{
-       \"assistant_id\": \"agent\",
-       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"hi!\"}]},
-       \"stream_mode\": [
-         \"updates\"
-       ],
-       \"interrupt_before\": [\"action\"]
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
-    ```
-
-Output:
-
-    {'messages': [{'content': 'hi!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '39c51f14-2d5c-4690-883a-d940854b1845', 'example': False}]}
-    {'messages': [{'content': 'hi!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '39c51f14-2d5c-4690-883a-d940854b1845', 'example': False}, {'content': [{'text': "Hello! Welcome. How can I assist you today? Is there anything specific you'd like to know or any information you're looking for?", 'type': 'text', 'index': 0}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'end_turn', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-d65e07fb-43ff-4d98-ab6b-6316191b9c8b', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 355, 'output_tokens': 31, 'total_tokens': 386}}]}
-
-
-If we check the state, we can see that it is finished
-
-=== "Python"
-
-    ```python
-    state = await client.threads.get_state(thread["thread_id"])
-
-    print(state['next'])
-    ```
-
-=== "Javascript"
-
-    ```js
-    const state = await client.threads.getState(thread["thread_id"]);
-
-    console.log(state.next);
-    ```
-
-=== "CURL"
-
-    ```bash
-    curl --request GET \
-        --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state | jq -c '.next'
-    ```
-
-Output:
-
-    []
-
 ## Example of approving tool

-Let's now look at what it looks like to approve a tool call. Note that we don't need to pass an interrupt to our streaming calls because the graph (defined [here](../../how-tos/human_in_the_loop/review-tool-calls.ipynb#simple-usage)) was already compiled with an interrupt before the `human_review_node`.
+First, let's run the agent with an input that requires tool calls with approval:

 === "Python"

@@ -180,6 +108,7 @@ Let's now look at what it looks like to approve a tool call. Note that we don't
        thread["thread_id"],
        assistant_id,
        input=input,
+        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -195,6 +124,7 @@ Let's now look at what it looks like to approve a tool call. Note that we don't
      assistantId,
      {
        input: input,
+        streamMode: "updates"
      }
    );

@@ -213,75 +143,32 @@ Let's now look at what it looks like to approve a tool call. Note that we don't
     --header 'Content-Type: application/json' \
     --data "{
       \"assistant_id\": \"agent\",
-       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf?\"}]}
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf?\"}]},
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
    ```

 Output:

-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '54e19d6e-89fa-44fb-b92c-12e7dd4ddf08', 'example': False}]}
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '54e19d6e-89fa-44fb-b92c-12e7dd4ddf08', 'example': False}, {'content': [{'text': "Certainly! I can help you check the weather in San Francisco. To get this information, I'll use the weather search function. Let me do that for you right away.", 'type': 'text', 'index': 0}, {'id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-45a6b6c3-ac69-42a4-8957-d982203d6392', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 90, 'total_tokens': 450}}]}
+    {'call_llm': {'messages': [{'content': [{'text': "I'll help you check the weather in San Francisco.", 'type': 'text'}, {'id': 'toolu_01142G3woscA8JjFTLdqymtn', 'input': {'city': 'San Francisco'}, 'name': 'weather_search', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_01Tdfufy4nZYXMbVZvgyNbhc', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'tool_use', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 379, 'output_tokens': 66}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-a33434b2-f5ca-40c6-98e2-6288d349d4ce-0', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01142G3woscA8JjFTLdqymtn', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 379, 'output_tokens': 66, 'total_tokens': 445, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}
+    {'__interrupt__': [{'value': {'question': 'Is this correct?', 'tool_call': {'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01142G3woscA8JjFTLdqymtn', 'type': 'tool_call'}}, 'resumable': True, 'ns': ['human_review_node:9caf42cf-1371-7213-a331-e6fe5d026be8'], 'when': 'during'}]}

-
-If we now check, we can see that it is waiting on human review:
+To approve the tool call, we need to let `human_review_node` know what value to use for the `human_review` variable we defined inside the node. We can provide this value by invoking the graph with a `Command(resume=<human_review>)` input.  Since we're approving the tool call, we'll provide `resume` value of `{"action": "continue"}` to navigate to `run_tool` node:

 === "Python"

    ```python
-    state = await client.threads.get_state(thread["thread_id"])
+    # highlight-next-line
+    from langgraph_sdk.schema import Command

-    print(state['next'])
-    ```
-
-=== "Javascript"
-
-    ```js
-    const state = await client.threads.getState(thread["thread_id"]);
-
-    console.log(state.next);
-    ```
-
-=== "CURL"
-
-    ```bash
-    curl --request GET \
-        --url <DELPOYMENT_URL>/threads/<THREAD_ID>/state | jq -c '.next'
-    ```
-
-Output:
-
-    ['human_review_node']
-
-To approve the tool call, we can just continue the thread with no edits. To do this, we just create a new run with no inputs.
-
-=== "Python"
-
-    ```python
    async for chunk in client.runs.stream(
        thread["thread_id"],
        assistant_id,
-        input=None,
-        stream_mode="values",
+        # highlight-next-line
+        command=Command(resume={"action": "continue"}),
+        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -294,8 +181,9 @@ To approve the tool call, we can just continue the thread with no edits. To do t
      thread["thread_id"],
      assistantId,
      {
-        input: null,
-        streamMode: "values",
+        // highlight-next-line
+        command: { resume: { "action": "continue" } },
+        streamMode: "updates"
      }
    );

@@ -313,34 +201,21 @@ To approve the tool call, we can just continue the thread with no edits. To do t
     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
     --header 'Content-Type: application/json' \
     --data "{
-       \"assistant_id\": \"agent\"
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+       \"assistant_id\": \"agent\",
+       \"command\": {
+         \"resume\": { \"action\": \"continue\"}
+       },
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
    ```

 Output:

-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '54e19d6e-89fa-44fb-b92c-12e7dd4ddf08', 'example': False}, {'content': [{'text': "Certainly! I can help you check the weather in San Francisco. To get this information, I'll use the weather search function. Let me do that for you right away.", 'type': 'text', 'index': 0}, {'id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-45a6b6c3-ac69-42a4-8957-d982203d6392', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 90, 'total_tokens': 450}}, {'content': 'Sunny!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '826cd0f2-9cc6-46f0-b7df-daa6a05d13d2', 'tool_call_id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'artifact': None, 'status': 'success'}]}
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '54e19d6e-89fa-44fb-b92c-12e7dd4ddf08', 'example': False}, {'content': [{'text': "Certainly! I can help you check the weather in San Francisco. To get this information, I'll use the weather search function. Let me do that for you right away.", 'type': 'text', 'index': 0}, {'id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-45a6b6c3-ac69-42a4-8957-d982203d6392', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 90, 'total_tokens': 450}}, {'content': 'Sunny!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '826cd0f2-9cc6-46f0-b7df-daa6a05d13d2', 'tool_call_id': 'toolu_015yrR3GMDXe6X8m2p9CsEDN', 'artifact': None, 'status': 'success'}, {'content': [{'text': "\n\nGreat news! The weather in San Francisco is sunny today. It's a beautiful day in the city by the bay. Is there anything else you'd like to know about the weather or any other information I can help you with?", 'type': 'text', 'index': 0}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'end_turn', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-5d5fd0f1-a939-447e-801a-9aaa812322d3', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 464, 'output_tokens': 50, 'total_tokens': 514}}]}
+    {'human_review_node': None}
+    {'run_tool': {'messages': [{'role': 'tool', 'name': 'weather_search', 'content': 'Sunny!', 'tool_call_id': 'toolu_01142G3woscA8JjFTLdqymtn'}]}}
+    {'call_llm': {'messages': [{'content': "According to the search, it's sunny in San Francisco right now!", 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_01JJE9AtT4a9Lob91RRiW9rU', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'end_turn', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 458, 'output_tokens': 18}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-5e8d80b5-c46a-4aad-af37-b01f8bb15963-0', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 458, 'output_tokens': 18, 'total_tokens': 476, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}

 ## Edit Tool Call

@@ -355,7 +230,7 @@ Let's now say we want to edit the tool call. E.g. change some of the parameters
        thread["thread_id"],
        assistant_id,
        input=input,
-        stream_mode="values",
+        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -371,7 +246,7 @@ Let's now say we want to edit the tool call. E.g. change some of the parameters
      assistantId,
      {
        input: input,
-        streamMode: "values",
+        streamMode: "updates",
      }
    );

@@ -390,84 +265,35 @@ Let's now say we want to edit the tool call. E.g. change some of the parameters
     --header 'Content-Type: application/json' \
     --data "{
       \"assistant_id\": \"agent\",
-       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf?\"}]}
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf?\"}]},
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
    ```

-Output:
+To do this, we will use `Command` with a different resume value of `{"action": "update", "data": <tool call args>}`. This will do the following:

-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': 'cec11391-84da-464b-bd2a-bd4f0d93b9ee', 'example': False}]}
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': 'cec11391-84da-464b-bd2a-bd4f0d93b9ee', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01SunSpDurNfcnXppWLPrtjC', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-6326da9f-6061-4e12-8586-482e32ab4cab', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01SunSpDurNfcnXppWLPrtjC', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}]}
-
-
-To do this, we first need to update the state. We can do this by passing a message in with the **same** id of the message we want to overwrite. This will have the effect of **replacing** that old message. Note that this is only possible because of the **reducer** we are using that replaces messages with the same ID - read more about that [here](https://langchain-ai.github.io/langgraph/concepts/low_level/#working-with-messages-in-graph-state).
+* combine existing tool call with user-provided tool call arguments and update the existing AI message with the new tool call
+* navigate to `run_tool` node with the updated AI message and continue execution


 === "Python"

    ```python
-    # To get the ID of the message we want to replace, we need to fetch the current state and find it there.
-    state = await client.threads.get_state(thread['thread_id'])
-    print("Current State:")
-    print(state['values'])
-    print("\nCurrent Tool Call ID:")
-    current_content = state['values']['messages'][-1]['content']
-    current_id = state['values']['messages'][-1]['id']
-    tool_call_id = state['values']['messages'][-1]['tool_calls'][0]['id']
-    print(tool_call_id)
+    # highlight-next-line
+    from langgraph_sdk.schema import Command

-    # We now need to construct a replacement tool call.
-    # We will change the argument to be `San Francisco, USA`
-    # Note that we could change any number of arguments or tool names - it just has to be a valid one
-    new_message = {
-        "role": "assistant", 
-        "content": current_content,
-        "tool_calls": [
-            {
-                "id": tool_call_id,
-                "name": "weather_search",
-                "args": {"city": "San Francisco, USA"}
-            }
-        ],
-        # This is important - this needs to be the same as the message you replacing!
-        # Otherwise, it will show up as a separate message
-        "id": current_id
-    }
-    await client.threads.update_state(
-        # This is the config which represents this thread
-        thread['thread_id'], 
-        # This is the updated value we want to push
-        {"messages": [new_message]}, 
-        # We push this update acting as our human_review_node
-        as_node="human_review_node"
-    )
-
-    print("\nResuming Execution")
-    # Let's now continue executing from here
    async for chunk in client.runs.stream(
        thread["thread_id"],
        assistant_id,
-        input=None,
+        # highlight-next-line
+        command=Command(
+            # highlight-next-line
+            resume={"action": "update", "data": {"city": "San Francisco, USA"}}
+            # highlight-next-line
+        ),
+        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -476,51 +302,21 @@ To do this, we first need to update the state. We can do this by passing a messa
 === "Javascript"

    ```js
-    const state = await client.threads.getState(thread.thread_id);
-    console.log("Current State:");
-    console.log(state.values);
-
-    console.log("\nCurrent Tool Call ID:");
-    const lastMessage = state.values.messages[state.values.messages.length - 1];
-    const currentContent = lastMessage.content;
-    const currentId = lastMessage.id;
-    const toolCallId = lastMessage.tool_calls[0].id;
-    console.log(toolCallId);
-
-    // Construct a replacement tool call
-    const newMessage = {
-      role: "assistant",
-      content: currentContent,
-      tool_calls: [
-        {
-          id: toolCallId,
-          name: "weather_search",
-          args: { city: "San Francisco, USA" }
-        }
-      ],
-      // Ensure the ID is the same as the message you're replacing
-      id: currentId
-    };
-
-    await client.threads.updateState(
-      thread.thread_id,  // Thread ID
-      {
-        values: { "messages": [newMessage] },  // Updated message
-        asNode: "human_review_node"
-      }  // Acting as human_review_node
-    );
-
-    console.log("\nResuming Execution");
-    // Continue executing from here
-    const streamResponseResumed = client.runs.stream(
+    const streamResponse = client.runs.stream(
      thread["thread_id"],
      assistantId,
      {
-        input: null,
+        // highlight-next-line
+        command: {
+          // highlight-next-line
+          resume: { "action": "update", "data": { "city": "San Francisco, USA" } }
+          // highlight-next-line
+        },
+        streamMode: "updates"
      }
    );

-    for await (const chunk of streamResponseResumed) {
+    for await (const chunk of streamResponse) {
      if (chunk.data && chunk.event !== "metadata") {
        console.log(chunk.data);
      }
@@ -531,76 +327,37 @@ To do this, we first need to update the state. We can do this by passing a messa

    ```bash
    curl --request POST \
-    --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state \
-    --header 'Content-Type: application/json' \
-    --data "{
-        \"values\": { \"messages\": [$(curl --request GET \
-            --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state |
-            jq -c '{
-            role: "assistant",
-            content: .values.messages[-1].content,
-            tool_calls: [
-                {
-                id: .values.messages[-1].tool_calls[0].id,
-                name: "weather_search",
-                args: { city: "San Francisco, USA" }
-                }
-            ],
-            id: .values.messages[-1].id
-            }')
-        ]},
-        \"as_node\": \"human_review_node\"
-    }" && echo "Resuming Execution" && curl --request POST \
-    --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
-    --header 'Content-Type: application/json' \
-    --data '{
-    "assistant_id": "agent"
-    }' | \
-    sed 's/\r$//' | \
-    awk '
-    /^event:/ {
-        if (data_content != "" && event_type != "metadata") {
-            print data_content "\n"
-        }
-        sub(/^event: /, "", $0)
-        event_type = $0
-        data_content = ""
-    }
-    /^data:/ {
-        sub(/^data: /, "", $0)
-        data_content = $0
-    }
-    END {
-        if (data_content != "" && event_type != "metadata") {
-            print data_content "\n"
-        }
-    }
-    '
+     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
+     --header 'Content-Type: application/json' \
+     --data "{
+       \"assistant_id\": \"agent\",
+       \"command\": {
+         \"resume\": { \"action\": \"update\", \"data\": { \"city\": \"San Francisco, USA\" } }
+       },
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
    ```

 Output:

-    Current State:
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '8713d1fa-9b26-4eab-b768-dafdaac70590', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-ede13f26-daf5-4d8f-817a-7611075bbcf1', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}]}
-
-    Current Tool Call ID:
-    toolu_01VzagzsUGZsNMwW1wHkcw7h
-
-    Resuming Execution
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '8713d1fa-9b26-4eab-b768-dafdaac70590', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-ede13f26-daf5-4d8f-817a-7611075bbcf1', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': None}, {'content': 'Sunny!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '7fc7d463-66bf-4555-9929-6af483de169b', 'tool_call_id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'artifact': None, 'status': 'success'}]}
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '8713d1fa-9b26-4eab-b768-dafdaac70590', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-ede13f26-daf5-4d8f-817a-7611075bbcf1', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': None}, {'content': 'Sunny!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '7fc7d463-66bf-4555-9929-6af483de169b', 'tool_call_id': 'toolu_01VzagzsUGZsNMwW1wHkcw7h', 'artifact': None, 'status': 'success'}, {'content': [{'text': "\n\nBased on the search result, the weather in San Francisco is sunny! It's a beautiful day in the city by the bay. Is there anything else you'd like to know about the weather or any other information I can help you with?", 'type': 'text', 'index': 0}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'end_turn', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-d90ce97a-39f9-4330-985e-67c5f351a0c5', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 455, 'output_tokens': 52, 'total_tokens': 507}}]}
+    {'human_review_node': {'messages': [{'role': 'ai', 'content': [{'text': "I'll help you check the weather in San Francisco.", 'type': 'text'}, {'id': 'toolu_016L4EDPcaQRzzZxiB4Wq2wa', 'input': {'city': 'San Francisco'}, 'name': 'weather_search', 'type': 'tool_use'}], 'tool_calls': [{'id': 'toolu_016L4EDPcaQRzzZxiB4Wq2wa', 'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}}], 'id': 'run-b07f0c35-4e93-43a5-9b48-363767ada3ca-0'}]}}
+    {'run_tool': {'messages': [{'role': 'tool', 'name': 'weather_search', 'content': 'Sunny!', 'tool_call_id': 'toolu_016L4EDPcaQRzzZxiB4Wq2wa'}]}}
+    {'call_llm': {'messages': [{'content': "According to the search, it's sunny in San Francisco right now!", 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_01De5HurjNUMwMUpfRtMLbX1', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'end_turn', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 460, 'output_tokens': 18}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-85e2aaaa-6f61-4fa0-b594-b6e57129d7e7-0', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 460, 'output_tokens': 18, 'total_tokens': 478, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}

 ## Give feedback to a tool call

-Sometimes, you may not want to execute a tool call, but you also may not want to ask the user to manually modify the tool call. In that case it may be better to get natural language feedback from the user. You can then insert these feedback as a mock **RESULT** of the tool call.
+Sometimes, you may not want to execute a tool call, but you also may not want to ask the user to manually modify the tool call. In that case it may be better to get natural language feedback from the user. You can then insert this feedback as a mock **RESULT** of the tool call.

 There are multiple ways to do this:

-You could add a new message to the state (representing the "result" of a tool call)
-You could add TWO new messages to the state - one representing an "error" from the tool call, other HumanMessage representing the feedback
-Both are similar in that they involve adding messages to the state. The main difference lies in the logic AFTER the `human_node` and how it handles different types of messages.
+1. You could add a new message to the state (representing the "result" of a tool call)
+2. You could add TWO new messages to the state - one representing an "error" from the tool call, other HumanMessage representing the feedback

-For this example we will just add a single tool call representing the feedback. Let's see this in action!
+Both are similar in that they involve adding messages to the state. The main difference lies in the logic AFTER the `human_review_node` and how it handles different types of messages.
+
+For this example we will just add a single tool call representing the feedback (see `human_review_node` implementation). Let's see this in action!

 === "Python"

@@ -611,6 +368,7 @@ For this example we will just add a single tool call representing the feedback.
        thread["thread_id"],
        assistant_id,
        input=input,
+        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -626,6 +384,7 @@ For this example we will just add a single tool call representing the feedback.
      assistantId,
      {
        input: input,
+        streamMode: "updates"
      }
    );

@@ -644,74 +403,35 @@ For this example we will just add a single tool call representing the feedback.
     --header 'Content-Type: application/json' \
     --data "{
       \"assistant_id\": \"agent\",
-       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf?\"}]}
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"what's the weather in sf?\"}]},
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
    ```

-Output:
+To do this, we will use `Command` with a different resume value of `{"action": "feedback", "data": <feedback string>}`. This will do the following:

-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': 'c80f13d0-674d-4233-b6a0-3940509d3cf3', 'example': False}]}
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': 'c80f13d0-674d-4233-b6a0-3940509d3cf3', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_016XyTdFA8NuPWeLyZPSzoM3', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-4911ac27-3d7c-4edf-a3ca-c2908e3922eb', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_016XyTdFA8NuPWeLyZPSzoM3', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}]}
-
-To do this, we first need to update the state. We can do this by passing a message in with the same **tool call id** of the tool call we want to respond to. Note that this is a **different*** ID from above
+* create a new tool message that combines existing tool call from LLM with the with user-provided feedback as content
+* navigate to `call_llm` node with the updated tool message and continue execution

 === "Python"

    ```python
-    # To get the ID of the message we want to replace, we need to fetch the current state and find it there.
-    state = await client.threads.get_state(thread['thread_id'])
-    print("Current State:")
-    print(state['values'])
-    print("\nCurrent Tool Call ID:")
-    tool_call_id = state['values']['messages'][-1]['tool_calls'][0]['id']
-    print(tool_call_id)
+    # highlight-next-line
+    from langgraph_sdk.schema import Command

-    # We now need to construct a replacement tool call.
-    # We will change the argument to be `San Francisco, USA`
-    # Note that we could change any number of arguments or tool names - it just has to be a valid one
-    new_message = {
-        "role": "tool", 
-        # This is our natural language feedback
-        "content": "User requested changes: pass in the country as well",
-        "name": "weather_search",
-        "tool_call_id": tool_call_id
-    }
-    await client.threads.update_state(
-        # This is the config which represents this thread
-        thread['thread_id'], 
-        # This is the updated value we want to push
-        {"messages": [new_message]}, 
-        # We push this update acting as our human_review_node
-        as_node="human_review_node"
-    )
-
-    print("\nResuming execution")
-    # Let's now continue executing from here
    async for chunk in client.runs.stream(
        thread["thread_id"],
        assistant_id,
-        input=None,
-        stream_mode="values",
+        # highlight-next-line
+        command=Command(
+            resume={
+                "action": "feedback", 
+                "data": "User requested changes: use <city, country> format for location"
+            }
+        ),
+        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -720,133 +440,22 @@ To do this, we first need to update the state. We can do this by passing a messa
 === "Javascript"

    ```js
-    const state = await client.threads.getState(thread.thread_id);
-    console.log("Current State:");
-    console.log(state.values);
-
-    console.log("\nCurrent Tool Call ID:");
-    const lastMessage = state.values.messages[state.values.messages.length - 1];
-    const toolCallId = lastMessage.tool_calls[0].id;
-    console.log(toolCallId);
-
-    // Construct a replacement tool call
-    const newMessage = {
-      role: "tool",
-      content: "User requested changes: pass in the country as well",
-      name: "weather_search",
-      tool_call_id: toolCallId,
-    };
-
-    await client.threads.updateState(
-      thread.thread_id,  // Thread ID
-      {
-        values: { "messages": [newMessage] },  // Updated message
-        asNode: "human_review_node"
-      }  // Acting as human_review_node
-    );
-
-    console.log("\nResuming Execution");
-    // Continue executing from here
-    const streamResponseEdited = client.runs.stream(
+    const streamResponse = client.runs.stream(
      thread["thread_id"],
      assistantId,
      {
-        input: null,
-        streamMode: "values",
-        interruptBefore: ["action"],
+        // highlight-next-line
+        command: {
+          resume: {
+            "action": "feedback", 
+            "data": "User requested changes: use <city, country> format for location"
+          }
+        },
+        streamMode: "updates"
      }
    );

-    for await (const chunk of streamResponseEdited) {
-      if (chunk.data && chunk.event !== "metadata") {
-        console.log(chunk.data);
-      }
-    }
-    ```
-
-=== "CURL"
-
-    ```bash
-    curl --request POST \
-    --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state \
-    --header 'Content-Type: application/json' \
-    --data "{
-        \"values\": { \"messages\": [$(curl --request GET \
-            --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state |
-            jq -c '{
-            role: "tool",
-            content: "User requested changes: pass in the country as well",
-            name: "get_weather",
-            tool_call_id: .values.messages[-1].id.tool_calls[0].id
-            }')
-        ]},
-        \"as_node\": \"human_review_node\"
-    }" && echo "Resuming Execution" && curl --request POST \
-    --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
-    --header 'Content-Type: application/json' \
-    --data '{
-    "assistant_id": "agent"
-    }' | \
-    sed 's/\r$//' | \
-    awk '
-    /^event:/ {
-        if (data_content != "" && event_type != "metadata") {
-            print data_content "\n"
-        }
-        sub(/^event: /, "", $0)
-        event_type = $0
-        data_content = ""
-    }
-    /^data:/ {
-        sub(/^data: /, "", $0)
-        data_content = $0
-    }
-    END {
-        if (data_content != "" && event_type != "metadata") {
-            print data_content "\n"
-        }
-    }
-    '
-    ```
-
-
-Output:
-
-    Current State:
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '3b2bbc38-d11b-49eb-80c0-c24a40dab5a8', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-c5a50900-abf5-4885-9cdb-da2bf0d892ac', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}]}
-
-    Current Tool Call ID:
-    toolu_01NNw18j57GEGPZvsa9f1wvX
-
-    Resuming execution
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '3b2bbc38-d11b-49eb-80c0-c24a40dab5a8', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-c5a50900-abf5-4885-9cdb-da2bf0d892ac', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}, {'content': 'User requested changes: pass in the country as well', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '787288be-213c-4fd3-8503-4a009bdb1b00', 'tool_call_id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'artifact': None, 'status': 'success'}, {'content': [{'text': '\n\nI apologize for the oversight. It seems the function requires additional information. Let me try again with a more specific request.', 'type': 'text', 'index': 0}, {'id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco, USA"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-5c355a56-cfe3-4046-b49f-f5b09fc397ef', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 461, 'output_tokens': 83, 'total_tokens': 544}}]}
-
-We can see that we now get to another breakpoint - because it went back to the model and got an entirely new prediction of what to call. Let's now approve this one and continue
-
-=== "Python"
-
-    ```python
-    async for chunk in client.runs.stream(
-        thread["thread_id"],
-        assistant_id,
-        input=None,
-    ):
-        if chunk.data and chunk.event != "metadata": 
-            print(chunk.data)
-    ```
-
-=== "Javascript"
-
-    ```js
-    const streamResponseResumed = client.runs.stream(
-      thread["thread_id"],
-      assistantId,
-      {
-        input: null,
-      }
-    );
-
-    for await (const chunk of streamResponseResumed) {
+    for await (const chunk of streamResponse) {
      if (chunk.data && chunk.event !== "metadata") {
        console.log(chunk.data);
      }
@@ -860,31 +469,81 @@ We can see that we now get to another breakpoint - because it went back to the m
     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
     --header 'Content-Type: application/json' \
     --data "{
-       \"assistant_id\": \"agent\"
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+       \"assistant_id\": \"agent\",
+       \"command\": {
+         \"resume\": { \"action\": \"feedback\", \"data\": \"User requested changes: use <city, country> format for location\" }
+       },
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
+    ```
+
+
+Output:
+
+    {'human_review_node': {'messages': [{'role': 'tool', 'content': 'User requested changes: use <city, country> format for location', 'name': 'weather_search', 'tool_call_id': 'toolu_01RkPHCjpfoUvPAktaq4Cqhm'}]}}
+    {'call_llm': {'messages': [{'content': [{'text': 'Let me try that again with the correct format:', 'type': 'text'}, {'id': 'toolu_01Rdrag6cVufHZG26BwVaiE7', 'input': {'city': 'San Francisco, USA'}, 'name': 'weather_search', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_01EBan969yY5f6iGk6sPgKcj', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'tool_use', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 469, 'output_tokens': 68}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-64bbc255-d126-4db0-8ae5-3197cf29bed1-0', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01Rdrag6cVufHZG26BwVaiE7', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 469, 'output_tokens': 68, 'total_tokens': 537, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}
+    {'__interrupt__': [{'value': {'question': 'Is this correct?', 'tool_call': {'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01Rdrag6cVufHZG26BwVaiE7', 'type': 'tool_call'}}, 'resumable': True, 'ns': ['human_review_node:e9856878-e28c-5dd1-d353-4d83aa1a3a2b'], 'when': 'during'}]}
+
+We can see that we now get to another interrupt - because it went back to the model and got an entirely new prediction of what to call. Let's now approve this one and continue.
+
+=== "Python"
+
+    ```python
+    # highlight-next-line
+    from langgraph_sdk.schema import Command
+
+    async for chunk in client.runs.stream(
+        thread["thread_id"],
+        assistant_id,
+        # highlight-next-line
+        command=Command(resume={"action": "continue"}),
+        stream_mode="updates",
+    ):
+        if chunk.data and chunk.event != "metadata": 
+            print(chunk.data)
+    ```
+
+=== "Javascript"
+
+    ```js
+    const streamResponse = client.runs.stream(
+      thread["thread_id"],
+      assistantId,
+      {
+        // highlight-next-line
+        command: { resume: { "action": "continue" } },
+        streamMode: "updates"
+      }
+    );
+
+    for await (const chunk of streamResponse) {
+      if (chunk.data && chunk.event !== "metadata") {
+        console.log(chunk.data);
+      }
+    }
+    ```
+
+=== "CURL"
+
+    ```bash
+    curl --request POST \
+     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
+     --header 'Content-Type: application/json' \
+     --data "{
+       \"assistant_id\": \"agent\",
+       \"command\": {
+         \"resume\": { \"action\": \"continue\"}
+       },
+       \"stream_mode\": [
+         \"updates\"
+       ]
+     }"
    ```

 Output:

-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '3b2bbc38-d11b-49eb-80c0-c24a40dab5a8', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-c5a50900-abf5-4885-9cdb-da2bf0d892ac', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}, {'content': 'User requested changes: pass in the country as well', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '787288be-213c-4fd3-8503-4a009bdb1b00', 'tool_call_id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'artifact': None, 'status': 'success'}, {'content': [{'text': '\n\nI apologize for the oversight. It seems the function requires additional information. Let me try again with a more specific request.', 'type': 'text', 'index': 0}, {'id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco, USA"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-5c355a56-cfe3-4046-b49f-f5b09fc397ef', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 461, 'output_tokens': 83, 'total_tokens': 544}}, {'content': 'Sunny!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '3b857482-bca2-4a73-a9ab-1f35a3e43e5f', 'tool_call_id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'artifact': None, 'status': 'success'}]}
-    {'messages': [{'content': "what's the weather in sf?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': '3b2bbc38-d11b-49eb-80c0-c24a40dab5a8', 'example': False}, {'content': [{'text': 'To get the weather information for San Francisco, I can use the weather_search function. Let me do that for you.', 'type': 'text', 'index': 0}, {'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-c5a50900-abf5-4885-9cdb-da2bf0d892ac', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco'}, 'id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 360, 'output_tokens': 80, 'total_tokens': 440}}, {'content': 'User requested changes: pass in the country as well', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '787288be-213c-4fd3-8503-4a009bdb1b00', 'tool_call_id': 'toolu_01NNw18j57GEGPZvsa9f1wvX', 'artifact': None, 'status': 'success'}, {'content': [{'text': '\n\nI apologize for the oversight. It seems the function requires additional information. Let me try again with a more specific request.', 'type': 'text', 'index': 0}, {'id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'input': {}, 'name': 'weather_search', 'type': 'tool_use', 'index': 1, 'partial_json': '{"city": "San Francisco, USA"}'}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'tool_use', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-5c355a56-cfe3-4046-b49f-f5b09fc397ef', 'example': False, 'tool_calls': [{'name': 'weather_search', 'args': {'city': 'San Francisco, USA'}, 'id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 461, 'output_tokens': 83, 'total_tokens': 544}}, {'content': 'Sunny!', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'weather_search', 'id': '3b857482-bca2-4a73-a9ab-1f35a3e43e5f', 'tool_call_id': 'toolu_01YAbLBoKozJyRQnB8LUMpXC', 'artifact': None, 'status': 'success'}, {'content': [{'text': "\n\nGreat news! The weather in San Francisco is sunny today. Is there anything else you'd like to know about the weather or any other information I can help you with?", 'type': 'text', 'index': 0}], 'additional_kwargs': {}, 'response_metadata': {'stop_reason': 'end_turn', 'stop_sequence': None}, 'type': 'ai', 'name': None, 'id': 'run-6a857bb1-f65b-4b86-93d6-c025e003c777', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 557, 'output_tokens': 38, 'total_tokens': 595}}]}
+    {'human_review_node': None}
+    {'run_tool': {'messages': [{'role': 'tool', 'name': 'weather_search', 'content': 'Sunny!', 'tool_call_id': 'toolu_01Rdrag6cVufHZG26BwVaiE7'}]}}
+    {'call_llm': {'messages': [{'content': 'The weather in San Francisco is sunny!', 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_013WTDHhbg8WiYLiQ9n2CaTk', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'end_turn', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 550, 'output_tokens': 12}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-b6c815f0-989a-47cf-b150-33e3bbc4eab7-0', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 550, 'output_tokens': 12, 'total_tokens': 562, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}
@@ -1,16 +1,16 @@
-# How to Wait for User Input
+# How to wait for user input using `interrupt`

-One of the main human-in-the-loop interaction patterns is waiting for human input. A key use case involves asking the user clarifying questions. One way to accomplish this is simply go to the `END` node and exit the graph. Then, any user response comes back in as fresh invocation of the graph. This is basically just creating a chatbot architecture.
+!!! tip "Prerequisites"

-The issue with this is it is tough to resume back in a particular point in the graph. Often times the agent is halfway through some process, and just needs a bit of a user input. Although it is possible to design your graph in such a way where you have a `conditional_entry_point` to route user messages back to the right place, that is not super scalable (as it essentially involves having a routing function that can end up almost anywhere).
+    This guide assumes familiarity with the following concepts:

-A separate way to do this is to have a node explicitly for getting user input. This is easy to implement in a notebook setting - you just put an `input()` call in the node. But that isn't exactly production ready.
+    * [Human-in-the-loop](../../concepts/human_in_the_loop.md)
+    * [LangGraph Glossary](../../concepts/low_level.md)
+    

-Luckily, LangGraph makes it possible to do similar things in a production way. The basic idea is:
+**Human-in-the-loop (HIL)** interactions are crucial for [agentic systems](../../concepts/agentic_concepts.md#human-in-the-loop). Waiting for human input is a common HIL interaction pattern, allowing the agent to ask the user clarifying questions and await input before proceeding.

- Set up a node that represents human input. This can have specific incoming/outgoing edges (as you desire). There shouldn't actually be any logic inside this node.
- Add a breakpoint before the node. This will stop the graph before this node executes (which is good, because there's no real logic in it anyways)
- Use `.update_state` to update the state of the graph. Pass in whatever human response you get. The key here is to use the `as_node` parameter to apply this update **as if you were that node**. This will have the effect of making it so that when you resume execution next it resumes as if that node just acted, and not from the beginning.
+We can implement this in LangGraph using the [`interrupt()`][langgraph.types.interrupt] function. `interrupt` allows us to stop graph execution to collect input from a user and continue execution with collected input.

 ## Setup

@@ -54,7 +54,7 @@ First, we need to setup our client so that we can communicate with our hosted gr

 ### Initial invocation

-Now, let's invoke our graph by interrupting before `ask_human` node:
+Now, let's invoke our graph.

 === "Python"

@@ -73,7 +73,6 @@ Now, let's invoke our graph by interrupting before `ask_human` node:
        assistant_id,
        input=input,
        stream_mode="updates",
-        interrupt_before=["ask_human"],
    ):
        if chunk.data and chunk.event != "metadata": 
            print(chunk.data)
@@ -95,7 +94,6 @@ Now, let's invoke our graph by interrupting before `ask_human` node:
      {
        input: input,
        streamMode: "updates",
-        interruptBefore: ["ask_human"]
      }
    );

@@ -115,117 +113,34 @@ Now, let's invoke our graph by interrupting before `ask_human` node:
     --data "{
       \"assistant_id\": \"agent\",
       \"input\": {\"messages\": [{\"role\": \"human\", \"content\": \"Ask the user where they are, then look up the weather there\"}]},
-       \"interrupt_before\": [\"ask_human\"],
       \"stream_mode\": [
         \"updates\"
       ]
-     }" | \
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+     }"
    ```
    
 Output:

-    {'agent': {'messages': [{'content': [{'text': "Certainly! I'll use the AskHuman function to ask the user about their location, and then I'll use the search function to look up the weather for that location. Let's start by asking the user where they are.", 'type': 'text'}, {'id': 'toolu_01RFahzYPvnPWTb2USk2RdKR', 'input': {'question': 'Where are you currently located?'}, 'name': 'AskHuman', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-a8422215-71d3-4093-afb4-9db141c94ddb', 'example': False, 'tool_calls': [{'name': 'AskHuman', 'args': {'question': 'Where are you currently located?'}, 'id': 'toolu_01RFahzYPvnPWTb2USk2RdKR'}], 'invalid_tool_calls': [], 'usage_metadata': None}]}}
+    {'agent': {'messages': [{'content': [{'text': "I'll help you ask the user about their location and then search for weather information.", 'type': 'text'}, {'id': 'toolu_012JeNEvyePZFWK39d52Wdwi', 'input': {'question': 'Where are you located?'}, 'name': 'AskHuman', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_01UBEdS6UvuFMetdokNsykVG', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'tool_use', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 438, 'output_tokens': 76}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-1b1210d8-39e0-4607-9f0e-0ea932d28d5c-0', 'example': False, 'tool_calls': [{'name': 'AskHuman', 'args': {'question': 'Where are you located?'}, 'id': 'toolu_012JeNEvyePZFWK39d52Wdwi', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 438, 'output_tokens': 76, 'total_tokens': 514, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}
+    {'__interrupt__': [{'value': 'Where are you located?', 'resumable': True, 'ns': ['ask_human:2d41f894-f297-211e-9bfe-1d162ecba54a'], 'when': 'during'}]}

+You can see that our graph got interrupted inside the `ask_human` node, which is now waiting for a `location` to be provided.

-### Adding user input to state
-
-We now want to update this thread with a response from the user. We then can kick off another run.
-
-Because we are treating this as a tool call, we will need to update the state as if it is a response from a tool call. In order to do this, we will need to check the state to get the ID of the tool call.
+### Providing human input

+We can provide human input (`location`) by invoking the graph with a `Command(resume="<location>")`:

 === "Python"

    ```python
-    state = await client.threads.get_state(thread['thread_id'])
-    tool_call_id = state['values']['messages'][-1]['tool_calls'][0]['id']
+    # highlight-next-line
+    from langgraph_sdk.schema import Command

-    # We now create the tool call with the id and the response we want
-    tool_message = [{"tool_call_id": tool_call_id, "type": "tool", "content": "san francisco"}]
-
-    await client.threads.update_state(thread['thread_id'], {"messages": tool_message}, as_node="ask_human")
-    ```
-
-=== "Javascript"
-
-    ```js
-    const state = await client.threads.getState(thread["thread_id"]);
-    const toolCallId = state.values.messages[state.values.messages.length - 1].tool_calls[0].id;
-
-    // We now create the tool call with the id and the response we want
-    const toolMessage = [
-      {
-        tool_call_id: toolCallId,
-        type: "tool",
-        content: "san francisco"
-      }
-    ];
-
-    await client.threads.updateState(
-      thread["thread_id"],
-      { values: { messages: toolMessage } },
-      { asNode: "ask_human" }
-    );
-    ```
-
-=== "CURL"
-
-    ```bash
-    curl --request GET \
-     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state \
-     | jq -r '.values.messages[-1].tool_calls[0].id' \
-     | sh -c '
-         TOOL_CALL_ID="$1"
-         
-         # Construct the JSON payload
-         JSON_PAYLOAD=$(printf "{\"messages\": [{\"tool_call_id\": \"%s\", \"type\": \"tool\", \"content\": \"san francisco\"}], \"as_node\": \"ask_human\"}" "$TOOL_CALL_ID")
-         
-         # Send the updated state
-         curl --request POST \
-              --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/state \
-              --header "Content-Type: application/json" \
-              --data "${JSON_PAYLOAD}"
-     ' _ 
-    ```
-
-Output:
-
-    {'configurable': {'thread_id': 'a9f322ae-4ed1-41ec-942b-38cb3d342c3a',
-    'checkpoint_ns': '',
-    'checkpoint_id': '1ef58e97-a623-63dd-8002-39a9a9b20be3'}}
-
-
-### Invoking after receiving human input
-
-We can now tell the agent to continue. We can just pass in None as the input to the graph, since no additional input is needed:
-
-=== "Python"
-
-    ```python
    async for chunk in client.runs.stream(
        thread["thread_id"],
        assistant_id,
-        input=None,
+        # highlight-next-line
+        command=Command(resume="san francisco"),
        stream_mode="updates",
    ):
        if chunk.data and chunk.event != "metadata": 
@@ -238,7 +153,8 @@ We can now tell the agent to continue. We can just pass in None as the input to
      thread["thread_id"],
      assistantId,
      {
-        input: null,
+        // highlight-next-line
+        command: { resume: "san francisco" },
        streamMode: "updates"
      }
    );
@@ -253,40 +169,23 @@ We can now tell the agent to continue. We can just pass in None as the input to
 === "CURL"

    ```bash
-    curl --request POST \                                                                             
+    curl --request POST \
     --url <DEPLOYMENT_URL>/threads/<THREAD_ID>/runs/stream \
     --header 'Content-Type: application/json' \
     --data "{
       \"assistant_id\": \"agent\",
+       \"command\": {
+         \"resume\": \"san francisco\"
+       },
       \"stream_mode\": [
         \"updates\"
       ]
-     }"| \ 
-     sed 's/\r$//' | \
-     awk '
-     /^event:/ {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-         sub(/^event: /, "", $0)
-         event_type = $0
-         data_content = ""
-     }
-     /^data:/ {
-         sub(/^data: /, "", $0)
-         data_content = $0
-     }
-     END {
-         if (data_content != "" && event_type != "metadata") {
-             print data_content "\n"
-         }
-     }
-     '
+     }"
    ```

 Output:

-    {'agent': {'messages': [{'content': [{'text': "Thank you for letting me know that you're in San Francisco. Now, I'll use the search function to look up the weather in San Francisco.", 'type': 'text'}, {'id': 'toolu_01K57ofmgG2wyJ8tYJjbq5k7', 'input': {'query': 'current weather in San Francisco'}, 'name': 'search', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-241baed7-db5e-44ce-ac3c-56431705c22b', 'example': False, 'tool_calls': [{'name': 'search', 'args': {'query': 'current weather in San Francisco'}, 'id': 'toolu_01K57ofmgG2wyJ8tYJjbq5k7'}], 'invalid_tool_calls': [], 'usage_metadata': None}]}}
-    {'action': {'messages': [{'content': '["I looked up: current weather in San Francisco. Result: It\'s sunny in San Francisco, but you better look out if you\'re a Gemini 😈."]', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'search', 'id': '8b699b95-8546-4557-8e66-14ea71a15ed8', 'tool_call_id': 'toolu_01K57ofmgG2wyJ8tYJjbq5k7'}]}}
-    {'agent': {'messages': [{'content': "Based on the search results, I can provide you with information about the current weather in San Francisco:\n\nThe weather in San Francisco is currently sunny. It's a beautiful day in the city! \n\nHowever, I should note that the search result included an unusual comment about Gemini zodiac signs. This appears to be either a joke or potentially irrelevant information added by the search engine. For accurate and detailed weather information, you might want to check a reliable weather service or app for San Francisco.\n\nIs there anything else you'd like to know about the weather or San Francisco?", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-b4d7309f-f849-46aa-b6ef-475bcabd2be9', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': None}]}}
-
+    {'ask_human': {'messages': [{'tool_call_id': 'toolu_012JeNEvyePZFWK39d52Wdwi', 'type': 'tool', 'content': 'san francisco'}]}}
+    {'agent': {'messages': [{'content': [{'text': 'Let me search for the weather in San Francisco.', 'type': 'text'}, {'id': 'toolu_019f9Y7ST6rNeDQkDjFCHk6C', 'input': {'query': 'current weather in san francisco'}, 'name': 'search', 'type': 'tool_use'}], 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_0152YFm7DtnzfZQuiMUzaSsw', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'tool_use', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 527, 'output_tokens': 67}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-f509b5b2-eb30-4200-a8da-fa79ed68812a-0', 'example': False, 'tool_calls': [{'name': 'search', 'args': {'query': 'current weather in san francisco'}, 'id': 'toolu_019f9Y7ST6rNeDQkDjFCHk6C', 'type': 'tool_call'}], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 527, 'output_tokens': 67, 'total_tokens': 594, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}
+    {'action': {'messages': [{'content': "I looked up: current weather in san francisco. Result: It's sunny in San Francisco, but you better look out if you're a Gemini 😈.", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'tool', 'name': 'search', 'id': 'cbd0f623-cc12-48a2-8c18-3cbb943e46e0', 'tool_call_id': 'toolu_019f9Y7ST6rNeDQkDjFCHk6C', 'artifact': None, 'status': 'success'}]}}
+    {'agent': {'messages': [{'content': "Based on the search results, it's currently sunny in San Francisco. Would you like any specific details about the weather forecast?", 'additional_kwargs': {}, 'response_metadata': {'id': 'msg_01FhzXj72CehBYkJGX69vsBc', 'model': 'claude-3-5-sonnet-20241022', 'stop_reason': 'end_turn', 'stop_sequence': None, 'usage': {'cache_creation_input_tokens': 0, 'cache_read_input_tokens': 0, 'input_tokens': 639, 'output_tokens': 29}, 'model_name': 'claude-3-5-sonnet-20241022'}, 'type': 'ai', 'name': None, 'id': 'run-f48e818e-dd88-415e-9a0b-4a958498b553-0', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': {'input_tokens': 639, 'output_tokens': 29, 'total_tokens': 668, 'input_token_details': {'cache_read': 0, 'cache_creation': 0}}}]}}
@@ -119,11 +119,11 @@ With this set up, running your graph and viewing in LangGraph Studio will result

 **Note the configuration icon in the top right corner of the `call_model` node**:

-![Graph in Studio](../img/studio_graph_with_configuration.png){width=1200}
+![Graph in Studio](img/studio_graph_with_configuration.png){width=1200}

 Clicking this icon will open a modal where you can edit the configuration for all of the fields associated with the `call_model` node. From here, you can save your changes and apply them to the graph. Note that these values reflect the currently active assistant, and saving will update the assistant with the new values.

-![Configuration modal](../img/studio_node_configuration.png){width=1200}
+![Configuration modal](img/studio_node_configuration.png){width=1200}

 ### Playground

@@ -133,7 +133,7 @@ LangGraph Studio also supports prompt engineering through an integration with th
 2. Within the thread log, any nodes that have made an LLM call will have a "View LLM Runs" button. Clicking this will open a popover with the LLM runs for that node.
 3. Select the LLM run you want to edit. This will open the LangSmith Playground with the selected LLM run.

-![Playground in Studio](../img/studio_playground.png){width=1200}
+![Playground in Studio](img/studio_playground.png){width=1200}

 From here you can edit the prompt, test different model configurations and re-run just this LLM call without having to re-run the entire graph. When you are happy with your changes, you can copy the updated prompt back into your graph.

@@ -1,7 +1,7 @@
 # How to stream events

 !!! info "Prerequisites"
-    * [Streaming](../../concepts/streaming.md#streaming-llm-tokens-and-events-astream_events)
+    * [Streaming](../../concepts/streaming.md#streaming-graph-outputs-stream-and-astream)

 This guide covers how to stream events from your graph (`stream_mode="events"`). Depending on the use case and user experience of your LangGraph application, your application may process event types differently.

@@ -476,7 +476,7 @@ The `useStream()` hook provides several callback options to help you respond to
 - `onError`: Called when an error occurs.
 - `onFinish`: Called when the stream is finished.
 - `onUpdateEvent`: Called when an update event is received.
- `onCustomEvent`: Called when a custom event is received. See [Custom events](../../concepts/streaming.md#custom) to learn how to stream custom events.
+- `onCustomEvent`: Called when a custom event is received. See [Custom events](../../how-tos/streaming.ipynb#custom) to learn how to stream custom events.
 - `onMetadataEvent`: Called when a metadata event is received, which contains the Run ID and Thread ID.

 ## Learn More
@@ -3,7 +3,7 @@
  "info": {
    "title": "LangGraph Control Plane API (Beta)",
    "version": "0.0.1",
-    "description": "The LangGraph Control Plane API is used to programmatically create and manage LangGraph Server deployments. For example, the APIs can be orchestrated to create custom CI/CD workflows.\n\n### Beta\nThis API is currently in beta and may change or break without notice. This API documentation may not be up-to-date with actual API functionality.\n### Host\nhttps://api.host.langchain.com/\n\n### Authentication\nTo authenticate with the LangGraph Control Plane API, set the `X-Api-Key` header to a valid LangSmith API key for each request.\n\n### Versioning\nEach endpoint path is prefixed with a version (e.g. `v1`).\n\n### Quick Start\n\n1. Call `GET /{version}/projects` to retrieve the `Project` `id`. The `Project` `id` is needed in subsequent API calls.\n2. Call `POST /{version}/projects/{project_id}/revisions` to create a new `Revision` for the `Project`.\n3. Call `GET /{version}/projects/{project_id}/revisions` to get the latest `Revision` (first element in returned list). Get the `Revision` `id`.\n4. Poll for `Revision` `status` until `status` is `DEPLOYED` by calling `GET /{version}/projects/{project_id}/revisions/{revision_id}`."
+    "description": "The LangGraph Control Plane API is used to programmatically create and manage LangGraph Server deployments. For example, the APIs can be orchestrated to create custom CI/CD workflows.\n\n### Beta\nThis API is currently in beta and may change or break without notice. This API documentation may not be up-to-date with actual API functionality.\n### Host\nhttps://api.host.langchain.com/\n\n### Authentication\nTo authenticate with the LangGraph Control Plane API, set the `X-Api-Key` header to a valid LangSmith API key for each request.\n\n### Versioning\nEach endpoint path is prefixed with a version (e.g. `v1`).\n\n### Quick Start\n\n1. Call `POST /{version}/projects` to create a new `Project`.\n2. Call `GET /{version}/projects` to retrieve the `Project` `id`. The `Project` `id` is needed in subsequent API calls.\n3. Call `POST /{version}/projects/{project_id}/revisions` to create a new `Revision` for the `Project`.\n4. Call `GET /{version}/projects/{project_id}/revisions` to get the latest `Revision` (first element in returned list). Get the `Revision` `id`.\n5. Poll for `Revision` `status` until `status` is `DEPLOYED` by calling `GET /{version}/projects/{project_id}/revisions/{revision_id}`."
  },
  "servers": [
    {
@@ -22,6 +22,34 @@
  ],
  "paths": {
    "/v1/projects": {
+      "post": {
+        "tags": ["Projects (v1)"],
+        "summary": "Create Project",
+        "description": "Create a new project.",
+        "operationId": "create_project_projects_post",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/CreateProjectRequest"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Success",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/Project"
+                }
+              }
+            }
+          }
+        }
+      },
      "get": {
        "tags": ["Projects (v1)"],
        "summary": "List Projects",
@@ -397,6 +425,83 @@
          }
        }
      },
+      "CreateProjectRequest":{
+        "type": "object",
+        "description": "Object for creating a new project.",
+        "properties": {
+          "name": {
+            "type": "string",
+            "description": "Name of the project.",
+            "required": true
+          },
+          "lc_hosted": {
+            "type": "boolean",
+            "description": "Whether the project is hosted on LangChain's cloud (i.e. Cloud SaaS deployment option). Set to `false` for Self-Hosted Data Plane and Self-Hosted Control Plane deployment options.",
+            "default": true
+          },
+          "repo_url": {
+            "type": ["string", "null"],
+            "description": "URL of the GitHub repository to use for the project. Omit this field if creating a new project from a Docker image.",
+            "default": "null"
+          },
+          "repo_path": {
+            "type": ["string", "null"],
+            "description": "Path to `langgraph.json` configuration file. For example, `langgraph.json` or `src/langgraph.json`.\n\nIf this field is omitted or set to `null`, the previous revision's `repo_path` value is used. Set this field for deployments from a GitHub repository. Omit this field if creating a new revision from a Docker image.",
+            "default": "null"
+          },
+          "repo_commit": {
+            "type": ["string", "null"],
+            "description": "Git branch name of deployment.\n\nThis field only applies to deployments from a GitHub repository.",
+            "default": "null"
+          },
+          "env_vars": {
+            "type": "array",
+            "description": "List of environment variables or secrets.\n\nIf this field is omitted or set to `null`, the previous revision's `env_vars` value is used.",
+            "items": {
+              "$ref": "#/components/schemas/EnvVar"
+            },
+            "default": "null"
+          },
+          "host_integration_id": {
+            "type": ["string", "null"],
+            "format": "uuid",
+            "description": "Do not use."
+          },
+          "deployment_type": {
+            "type": "string",
+            "description": "Development (`dev`) or Production (`prod`) type deployment.",
+            "enum": [
+              "dev",
+              "prod"
+            ]
+          },
+          "shareable": {
+            "type": ["boolean", "null"],
+            "description": "Boolean flag to configure if a deployment is shareable through LangGraph Studio.\n\nIf this field is omitted or set to `null`, the previous revision's `shareable` value is used. This field does not apply to BYOC deployments.",
+            "default": "null"
+          },
+          "platform": {
+            "type": "object",
+            "description": "Do not use.",
+            "default": "null"
+          },
+          "image_path": {
+            "type": ["string", "null"],
+            "description": "URI of the Docker image to deploy.\n\nIf this field is omitted or set to `null`, the previous revision's `image_path` value is used. Set this field for BYOC deployments. Omit this field if creating a new revision from a GitHub repository.",
+            "default": "null"
+          },
+          "build_on_push": {
+            "type": "boolean",
+            "description": "Boolean flag to indicate if a new revision is automatically created on push to GitHub branch (`repo_branch`).\n\nThis field does not apply for BYOC deployments.",
+            "default": false
+          },
+          "container_spec": {
+            "description": "If this field is omitted or set to `null`, the previous revision's `container_spec` value is used.",
+            "$ref": "#/components/schemas/ContainerSpec",
+            "default": "null"
+          }
+        }
+      },
      "CreateRevisionRequest": {
        "type": "object",
        "description": "Object for creating a new revision.",
@@ -49,7 +49,7 @@ The LangGraph CLI requires a JSON configuration file that follows this [schema](
    | <span style="white-space: nowrap;">`pip_config_file`</span>  | Path to `pip` config file.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
    | <span style="white-space: nowrap;">`dockerfile_lines`</span> | Array of additional lines to add to Dockerfile following the import from parent image.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
    | <span style="white-space: nowrap;">`checkpointer`</span>   | Configuration for the checkpointer. Contains a `ttl` field which is an object with the following keys: <ul><li>`strategy`: How to handle expired checkpoints (e.g., `"delete"`).</li><li>`sweep_interval_minutes`: How often to check for expired checkpoints (integer).</li><li>`default_ttl`: Default time-to-live for checkpoints in **minutes** (integer). Defines how long checkpoints are kept before the specified strategy is applied.</li></ul> |
-    | <span style="white-space: nowrap;">`http`</span>            | HTTP server configuration with the following fields: <ul><li>`app`: Path to custom Starlette/FastAPI app (e.g., `"./src/agent/webapp.py:app"`). See [custom routes guide](../../how-tos/http/custom_routes.md).</li><li>`disable_assistants`: Disable `/assistants` routes</li><li>`disable_threads`: Disable `/threads` routes</li><li>`disable_runs`: Disable `/runs` routes</li><li>`disable_store`: Disable `/store` routes</li><li>`disable_meta`: Disable `/ok`, `/info`, `/metrics`, and `/docs` routes</li><li>`cors`: CORS configuration with fields for `allow_origins`, `allow_methods`, `allow_headers`, etc.</li></ul> |
+    | <span style="white-space: nowrap;">`http`</span>            | HTTP server configuration with the following fields: <ul><li>`app`: Path to custom Starlette/FastAPI app (e.g., `"./src/agent/webapp.py:app"`). See [custom routes guide](../../how-tos/http/custom_routes.md).</li><li>`disable_assistants`: Disable `/assistants` routes</li><li>`disable_threads`: Disable `/threads` routes</li><li>`disable_runs`: Disable `/runs` routes</li><li>`disable_store`: Disable `/store` routes</li><li>`disable_meta`: Disable `/ok`, `/info`, `/metrics`, and `/docs` routes</li><li>`cors`: CORS configuration with fields for `allow_origins`, `allow_methods`, `allow_headers`, etc.</li><li>`configurable_headers`: Define which request headers to exclude or include as a run's configurable values.</li></ul> |

 === "JS"

@@ -97,3 +97,21 @@ Database Connectivity:
    Custom Redis instances are only available for [Self-Hosted Data Plane](../../concepts/langgraph_self_hosted_data_plane.md) and [Self-Hosted Control Plane](../../concepts/langgraph_self_hosted_control_plane.md) deployments.

 Specify `REDIS_URI_CUSTOM` to use a custom Redis instance. The value of `REDIS_URI_CUSTOM` must be a valid [Redis connection URI](https://redis-py.readthedocs.io/en/stable/connections.html#redis.Redis.from_url).
+
+## `REDIS_KEY_PREFIX`
+
+!!! info "Available in API Server version 0.1.9+"
+    This environment variable is supported in API Server version 0.1.9 and above.
+
+Specify a prefix for Redis keys. This allows multiple LangGraph Server instances to share the same Redis instance by using different key prefixes. 
+
+Defaults to `''`.
+
+## `REDIS_CLUSTER`
+
+!!! info "Only Allowed in Self-Hosted Deployments"
+    Redis Cluster mode is only available in Self-Hosted Deployment models, LangGraph Cloud SaaS will provision a redis instance for you by default.
+
+Set `REDIS_CLUSTER` to `True` to enable Redis Cluster mode. When enabled, the system will connect to Redis using cluster mode. This is useful when connecting to a Redis Cluster deployment.
+
+Defaults to `False`.
@@ -15,7 +15,7 @@ This guide shows a typical structure for a LangGraph application and shows how t

 To deploy using the LangGraph Platform, the following information should be provided:

-1. A [LangGraph API Configuration file](#configuration-file) (`langgraph.json`) that specifies the dependencies, graphs, environment variables to use for the application.
+1. A [LangGraph API Configuration file](#configuration-file-concepts) (`langgraph.json`) that specifies the dependencies, graphs, environment variables to use for the application.
 2. The [graphs](#graphs) that implement the logic of the application.
 3. A file that specifies [dependencies](#dependencies) required to run the application.
 4. [Environment variable](#environment-variables) that are required for the application to run.
@@ -77,7 +77,7 @@ Below are examples of directory structures for Python and JavaScript application
    The directory structure of a LangGraph application can vary depending on the programming language and the package manager used.


-## Configuration File
+## Configuration File {#configuration-file-concepts}

 The `langgraph.json` file is a JSON file that specifies the dependencies, graphs, environment variables, and other settings required to deploy a LangGraph application.

@@ -145,18 +145,18 @@ A LangGraph application may depend on other Python packages or JavaScript librar
 You will generally need to specify the following information for dependencies to be set up correctly:

 1. A file in the directory that specifies the dependencies (e.g., `requirements.txt`, `pyproject.toml`, or `package.json`).
-2. A `dependencies` key in the [LangGraph configuration file](#configuration-file) that specifies the dependencies required to run the LangGraph application.
-3. Any additional binaries or system libraries can be specified using `dockerfile_lines` key in the [LangGraph configuration file](#configuration-file).
+2. A `dependencies` key in the [LangGraph configuration file](#configuration-file-concepts) that specifies the dependencies required to run the LangGraph application.
+3. Any additional binaries or system libraries can be specified using `dockerfile_lines` key in the [LangGraph configuration file](#configuration-file-concepts).

 ## Graphs

-Use the `graphs` key in the [LangGraph configuration file](#configuration-file) to specify which graphs will be available in the deployed LangGraph application.
+Use the `graphs` key in the [LangGraph configuration file](#configuration-file-concepts) to specify which graphs will be available in the deployed LangGraph application.

 You can specify one or more graphs in the configuration file. Each graph is identified by a name (which should be unique) and a path for either: (1) the compiled graph or (2) a function that makes a graph is defined.

 ## Environment Variables

-If you're working with a deployed LangGraph application locally, you can configure environment variables in the `env` key of the [LangGraph configuration file](#configuration-file).
+If you're working with a deployed LangGraph application locally, you can configure environment variables in the `env` key of the [LangGraph configuration file](#configuration-file-concepts).

 For a production deployment, you will typically want to configure the environment variables in the deployment environment.

@@ -409,39 +409,6 @@ The `Command` primitive provides several options to control and modify the graph

 By leveraging `Command`, you can resume graph execution, handle user inputs, and dynamically adjust the graph's state.

-## Using with `invoke` and `ainvoke`
-
-When you use `stream` or `astream` to run the graph, you will receive an `Interrupt` event that let you know the `interrupt` was triggered. 
-
-`invoke` and `ainvoke` do not return the interrupt information. To access this information, you must use the [get_state](../reference/graphs.md#langgraph.graph.graph.CompiledGraph.get_state) method to retrieve the graph state after calling `invoke` or `ainvoke`.
-
-```python
-# Run the graph up to the interrupt 
-result = graph.invoke(inputs, thread_config)
-# Get the graph state to get interrupt information.
-state = graph.get_state(thread_config)
-# Print the state values
-print(state.values)
-# Print the pending tasks
-print(state.tasks)
-# Resume the graph with the user's input.
-graph.invoke(Command(resume={"age": "25"}), thread_config)
-```
-
-```pycon
-{'foo': 'bar'} # State values
-(
-    PregelTask(
-        id='5d8ffc92-8011-0c9b-8b59-9d3545b7e553', 
-        name='node_foo', 
-        path=('__pregel_pull', 'node_foo'), 
-        error=None, 
-        interrupts=(Interrupt(value='value_in_interrupt', resumable=True, ns=['node_foo:5d8ffc92-8011-0c9b-8b59-9d3545b7e553'], when='during'),), state=None, 
-        result=None
-    ),
-) # Pending tasks. interrupts 
-```
-
 ## How does resuming from an interrupt work?

 !!! warning
@@ -473,6 +440,22 @@ Upon **resuming** the graph, the counter will be incremented a second time, resu
 The value of counter is: 2
 ```

+### Resuming multiple interrupts with one invocation
+
+If you have multiple interrupts in the task queue, you can use `Command.resume` with a dictionary mapping
+of interrupt ids to resume values to resume multiple interrupts with a single `invoke` / `stream` call.
+
+For example, once your graph has been interrupted (multiple times, theoretically) and is stalled:
+
+```python
+resume_map = {
+    i.interrupt_id: f"human input for prompt {i.value}"
+    for i in parent.get_state(thread_config).interrupts
+}
+
+parent_graph.invoke(Command(resume=resume_map), config=thread_config)
+```
+
 ## Common Pitfalls

 ### Side-effects
@@ -20,7 +20,7 @@ The LangGraph Platform incorporates best practices for agent deployment, so you
 * **Double texting support**: Many times users might interact with your graph in unintended ways. For instance, a user may send one message and before the graph has finished running send a second message. We call this ["double texting"](double_texting.md) and have added four different ways to handle this.
 * **Optimized checkpointer**: LangGraph Platform comes with a built-in [checkpointer](./persistence.md#checkpoints) optimized for LangGraph applications.
 * **Human-in-the-loop endpoints**: We've exposed all endpoints needed to support [human-in-the-loop](human_in_the_loop.md) features.
-* **Memory**: In addition to thread-level persistence (covered above by [checkpointers]l(./persistence.md#checkpoints)), LangGraph Platform also comes with a built-in [memory store](persistence.md#memory-store).
+* **Memory**: In addition to thread-level persistence (covered above by [checkpointers](./persistence.md#checkpoints)), LangGraph Platform also comes with a built-in [memory store](persistence.md#memory-store).
 * **Cron jobs**: Built-in support for scheduling tasks, enabling you to automate regular actions like data clean-up or batch processing within your applications.
 * **Webhooks**: Allows your application to send real-time notifications and data updates to external systems, making it easy to integrate with third-party services and trigger actions based on specific events.
 * **Monitoring**: LangGraph Server integrates seamlessly with the [LangSmith](https://docs.smith.langchain.com/) monitoring platform, providing real-time insights into your application's performance and health.
@@ -7,19 +7,17 @@

 ## Versions

-There are two versions of the self-hosted deployment: [Self-Hosted Enterprise](./deployment_options.md#self-hosted-enterprise) and [Self-Hosted Lite](./deployment_options.md#self-hosted-lite).
+There are two versions of the self-hosted deployment: [Self-Hosted Data Plane](./deployment_options.md#self-hosted-data-plane) and [Self-Hosted Control Plane](./deployment_options.md#self-hosted-control-plane).

-### Self-Hosted Lite
+### Self-Hosted Data Plane

-The Self-Hosted Lite version is a limited version of LangGraph Platform that you can run locally or in a self-hosted manner (up to 1 million nodes executed per year).
+The [Self-Hosted Data Plane](./langgraph_self_hosted_data_plane.md) deployment option is a "hybrid" model for deployment where we manage the [control plane](./langgraph_control_plane.md) in our cloud and you manage the [data plane](./langgraph_data_plane.md) in your cloud. This option provides a way to securely manage your data plane infrastructure, while offloading control plane management to us.

-When using the Self-Hosted Lite version, you authenticate with a [LangSmith](https://smith.langchain.com/) API key.
+When using the Self-Hosted Data Plane version, you authenticate with a [LangSmith](https://smith.langchain.com/) API key.

-### Self-Hosted Enterprise
+### Self-Hosted Control Plane

-The Self-Hosted Enterprise version is the full version of LangGraph Platform.
-
-To use the Self-Hosted Enterprise version, you must acquire a license key that you will need to pass in when running the Docker image. To acquire a license key, please email sales@langchain.dev.
+The [Self-Hosted Control Plane](./langgraph_self_hosted_control_plane.md) deployment option is a fully self-hosted model for deployment where you manage the [control plane](./langgraph_control_plane.md) and [data plane](./langgraph_data_plane.md) in your cloud. This option give you full control and responsibility of the control plane and data plane infrastructure.

 ## Requirements

@@ -691,7 +691,8 @@
    "\n",
    "checkpointer = InMemorySaver()\n",
    "graph = create_react_agent(\n",
-    "    model,\n",
+    "    # limit the output size to ensure consistent behavior\n",
+    "    model.bind(max_tokens=256),\n",
    "    tools,\n",
    "    # highlight-next-line\n",
    "    pre_model_hook=summarization_node,\n",
@@ -39,7 +39,7 @@ You will eventually need to pass in the following environment variables to the L

        `<database_name_1>` and `database_name_2` are different databases within the same instance, but `<hostname_1>` is shared. **The same database cannot be used for separate deployments**.

- `LANGSMITH_API_KEY`: (If using [Self-Hosted Lite](../concepts/deployment_options.md#self-hosted-lite)) LangSmith API key. This will be used to authenticate ONCE at server start up.
+- `LANGSMITH_API_KEY`: (If using [Self-Hosted Data Plane](../concepts/deployment_options.md#self-hosted-data-plane)) LangSmith API key. This will be used to authenticate ONCE at server start up.
 - `LANGGRAPH_CLOUD_LICENSE_KEY`: (If using [Self-Hosted Enterprise](../concepts/deployment_options.md#self-hosted-enterprise)) LangGraph Platform license key. This will be used to authenticate ONCE at server start up.
 - `LANGCHAIN_ENDPOINT`: To send traces to a [self-hosted LangSmith](https://docs.smith.langchain.com/self_hosting) instance, set `LANGCHAIN_ENDPOINT` to the hostname of the self-hosted LangSmith instance.

@@ -248,8 +248,9 @@ LangGraph Platform supports multiple types of runs besides streaming runs.
 - [How to run multiple agents in the same thread](../cloud/how-tos/same-thread.md)
 - [How to create cron jobs](../cloud/how-tos/cron_jobs.md)
 - [How to create stateless runs](../cloud/how-tos/stateless_runs.md)
+- [How to use headers as runtime configuration](../cloud/how-tos/configurable_headers.md)

-### Streaming
+### Streaming {#streaming_1}

 Streaming the results of your LLM application is vital for ensuring a good user experience, especially when your graph may call multiple models and take a long time to fully complete a run. Read about how to stream values from your graph in these how to guides:

@@ -267,15 +268,21 @@ With LangGraph Platform you can integrate LangGraph agents into your React appli
 - [How to integrate LangGraph into your React application](../cloud/how-tos/use_stream_react.md)
 - [How to implement Generative User Interfaces with LangGraph](../cloud/how-tos/generative_ui_react.md)

-### Human-in-the-loop
+### Human-in-the-loop {#human-in-the-loop-1}

-When designing complex graphs, relying entirely on the LLM for decision-making can be risky, particularly when it involves tools that interact with files, APIs, or databases. These interactions may lead to unintended data access or modifications, depending on the use case. To mitigate these risks, LangGraph allows you to integrate human-in-the-loop behavior, ensuring your LLM applications operate as intended without undesirable outcomes.
+[Human-in-the-loop](../concepts/human_in_the_loop.md) functionality allows
+you to involve humans in the decision-making process of your graph. These how-to guides show how to implement human-in-the-loop workflows in your graph.

- [How to add a breakpoint](../cloud/how-tos/human_in_the_loop_breakpoint.md)
 - [How to wait for user input](../cloud/how-tos/human_in_the_loop_user_input.md)
+- [How to review tool calls](../cloud/how-tos/human_in_the_loop_review_tool_calls.md)
+- [How to add static breakpoints](../cloud/how-tos/human_in_the_loop_breakpoint.md)
+
+### Time Travel
+
+[Time travel](../concepts/time-travel.md) allows you to replay past actions in your LangGraph application to explore alternative paths and debug issues. These how-to guides show how to use time travel in your graph.
+
 - [How to edit graph state](../cloud/how-tos/human_in_the_loop_edit_state.md)
 - [How to replay and branch from prior states](../cloud/how-tos/human_in_the_loop_time_travel.md)
- [How to review tool calls](../cloud/how-tos/human_in_the_loop_review_tool_calls.md)

 ### Double-texting

@@ -193,7 +193,7 @@
   "cell_type": "markdown",
   "metadata": {},
   "source": [
-    "## Using in `create_react_agent`\n",
+    "## Using in `create_react_agent` {#using-in-create-react-agent}\n",
    "\n",
    "Add semantic search to your tool calling agent by injecting the store in the `prompt` function. You can also use the store in a tool to let your agent manually store or search for memories."
   ]
@@ -2,17 +2,17 @@

 ## :fontawesome-brands-safari:{ .safari } Safari connection error with local dev server

-Safari blocks plain‑HTTP traffic on localhost. If you start Studio with a vanilla  
-`langgraph dev`, the page may report a "Failed to load assistants" error (or something similar) and the browser DevTools will show network errors.
+Safari blocks plain‑HTTP traffic on localhost. If you start Studio with a vanilla `langgraph dev`, the page may report a "Failed to load assistants" error and the browser DevTools will show network errors.

 #### Quick fix — run Studio through a secure Cloudflare tunnel

 === "Python"

    ```shell
-    pip install -U langgraph-cli>=0.2.6            # Python
+    pip install -U langgraph-cli>=0.2.6
    langgraph dev --tunnel
    ```
+
 === "JS"

    ```shell
@@ -25,17 +25,18 @@ The command prints a URL like:
 ```shell
 https://smith.langchain.com/studio/?baseUrl=https://hamilton-praise-heart-costumes.trycloudflare.com
 ```
+
 where
+
 ```shell
 ?baseUrl=https://hamilton-praise-heart-costumes.trycloudflare.com
 ```
-indicates the endpoint where your agent server is exposed.

-Open that URL in Safari and Studio should load immediately.
+indicates the endpoint where your agent server is exposed. Open that URL in Safari and Studio should load immediately.

 #### Alternative — use a Chromium‑based browser

-Chrome, Edge, and Brave allow HTTP on localhost, so a plain `langgraph dev` should work without extra steps.
+Chrome and other Chromium‑based browsers allow HTTP on localhost, so a plain `langgraph dev` should work without extra steps.

 #### If it’s still not loading

@@ -43,3 +44,43 @@ Chrome, Edge, and Brave allow HTTP on localhost, so a plain `langgraph dev` sho
 2. Confirm your CLI version with `langgraph --version`.

 No other configuration, certificates, or CORS tweaks are required.
+
+## :fontawesome-brands-brave:{ .brave } Brave connection error with local dev server
+
+By default, Brave blocks plain‑HTTP traffic on localhost if Brave Shields are enabled. If you start Studio with a vanilla `langgraph dev`, the page may report a "Failed to load assistants" error and the browser DevTools will show network errors.
+
+#### Quick fix — disable Brave Shields for LangSmith
+
+Click the Brave icon next to the URL bar and turn off the Brave Shields in the popover.
+
+![Brave Shields](./img/brave-shields.png)
+
+#### Alternative — run Studio through a secure Cloudflare tunnel
+
+=== "Python"
+
+    ```shell
+    pip install -U langgraph-cli>=0.2.6
+    langgraph dev --tunnel
+    ```
+
+=== "JS"
+
+    ```shell
+    # Requires @langchain/langgraph-cli>=0.0.26
+    npx @langchain/langgraph-cli dev
+    ```
+
+The command prints a URL like:
+
+```shell
+https://smith.langchain.com/studio/?baseUrl=https://hamilton-praise-heart-costumes.trycloudflare.com
+```
+
+where
+
+```shell
+?baseUrl=https://hamilton-praise-heart-costumes.trycloudflare.com
+```
+
+indicates the endpoint where your agent server is exposed. Open that URL in Brave and Studio should load immediately.
@@ -139,7 +139,7 @@ langgraph dev --no-browser
    }
    ```

-Now let's try to chat with our bot. If we've implemented authentication correctly, we should only be able to access the bot if we provide a valid token in the request header. Users will still, however, be able to access each other's resources until we add [resource authorization handlers](../../concepts/auth.md#resource-authorization) in the next section of our tutorial.
+Now let's try to chat with our bot. If we've implemented authentication correctly, we should only be able to access the bot if we provide a valid token in the request header. Users will still, however, be able to access each other's resources until we add [resource authorization handlers](../../concepts/auth.md#resource-specific-handlers) in the next section of our tutorial.

 ![Authentication, no authorization handlers](./img/authentication.png)

@@ -6,7 +6,7 @@
    2. Resource Authorization (you are here) - Let users have private conversations
    3. [Production Auth](add_auth_server.md) - Add real user accounts and validate using OAuth2

-In this tutorial, we will extend our chatbot to give each user their own private conversations. We'll add [resource-level access control](../../concepts/auth.md#resource-level-access-control) so users can only see their own threads.
+In this tutorial, we will extend our chatbot to give each user their own private conversations. We'll add [resource-level access control](../../concepts/auth.md#single-owner-resources) so users can only see their own threads.

 ![Authorization handlers](./img/authorization.png)

@@ -35,7 +35,7 @@ langgraph dev --no-browser

 Recall that in the last tutorial, the [`Auth`](../../cloud/reference/sdk/python_sdk_ref.md#langgraph_sdk.auth.Auth) object let us register an [authentication function](../../concepts/auth.md#authentication), which the LangGraph platform uses to validate the bearer tokens in incoming requests. Now we'll use it to register an **authorization** handler.

-Authorization handlers are functions that run **after** authentication succeeds. These handlers can add [metadata](../../concepts/auth.md#resource-metadata) to resources (like who owns them) and filter what each user can see.
+Authorization handlers are functions that run **after** authentication succeeds. These handlers can add [metadata](../../concepts/auth.md#filter-operations) to resources (like who owns them) and filter what each user can see.

 Let's update our `src/security/auth.py` and add one authorization handler that is run on every request:

@@ -211,7 +211,7 @@ This means:

 ## Adding scoped authorization handlers {#scoped-authorization}

-The broad `@auth.on` handler matches on all [authorization events](../../concepts/auth.md#authorization-events). This is concise, but it means the contents of the `value` dict are not well-scoped, and we apply the same user-level access control to every resource. If we want to be more fine-grained, we can also control specific actions on resources.
+The broad `@auth.on` handler matches on all [authorization events](../../concepts/auth.md#supported-resources). This is concise, but it means the contents of the `value` dict are not well-scoped, and we apply the same user-level access control to every resource. If we want to be more fine-grained, we can also control specific actions on resources.

 Update `src/security/auth.py` to add handlers for specific resource types:

@@ -290,7 +290,7 @@ Notice that instead of one global handler, we now have specific handlers for:
 2. Reading threads
 3. Accessing assistants

-The first three of these match specific **actions** on each resource (see [resource actions](../../concepts/auth.md#resource-actions)), while the last one (`@auth.on.assistants`) matches _any_ action on the `assistants` resource. For each request, LangGraph will run the most specific handler that matches the resource and action being accessed. This means that the four handlers above will run rather than the broadly scoped "`@auth.on`" handler.
+The first three of these match specific **actions** on each resource (see [resource actions](../../concepts/auth.md#resource-specific-handlers)), while the last one (`@auth.on.assistants`) matches _any_ action on the `assistants` resource. For each request, LangGraph will run the most specific handler that matches the resource and action being accessed. This means that the four handlers above will run rather than the broadly scoped "`@auth.on`" handler.

 Try adding the following test code to your test file:

@@ -1627,7 +1627,7 @@
  },
  {
   "cell_type": "code",
-   "execution_count": 83,
+   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
@@ -104,23 +104,19 @@ nav:
      - How-to Guides:
        - how-tos/index.md
        - LangGraph:
-          - LangGraph: how-tos#langgraph
          - Graph API Basics:
-              - Graph API Basics: how-tos#graph-api-basics
              - how-tos/state-reducers.ipynb
              - how-tos/sequence.ipynb
              - how-tos/branching.ipynb
              - how-tos/recursion-limit.ipynb
              - how-tos/visualization.ipynb
          - Controllability:
-              - Controllability: how-tos#controllability
              - how-tos/map-reduce.ipynb
              - how-tos/command.ipynb
              - how-tos/configuration.ipynb
              - how-tos/node-retries.ipynb
              - how-tos/return-when-recursion-limit-hits.ipynb
          - Persistence:
-              - Persistence: how-tos#persistence
              - how-tos/persistence.ipynb
              - how-tos/subgraph-persistence.ipynb
              - how-tos/cross-thread-persistence.ipynb
@@ -130,13 +126,11 @@ nav:
              - how-tos/persistence-functional.ipynb
              - how-tos/cross-thread-persistence-functional.ipynb
          - Memory:
-              - Memory: how-tos#memory
              - how-tos/memory/manage-conversation-history.ipynb
              - how-tos/memory/delete-messages.ipynb
              - how-tos/memory/add-summary-conversation-history.ipynb
              - how-tos/memory/semantic-search.ipynb
          - Human-in-the-loop:
-              - Human-in-the-loop: how-tos#human-in-the-loop
              - how-tos/human_in_the_loop/breakpoints.ipynb
              - how-tos/human_in_the_loop/dynamic_breakpoints.ipynb
              - how-tos/human_in_the_loop/edit-graph-state.ipynb
@@ -146,7 +140,6 @@ nav:
              - how-tos/wait-user-input-functional.ipynb
              - how-tos/review-tool-calls-functional.ipynb
          - Streaming:
-              - Streaming: how-tos#streaming
              - how-tos/streaming.ipynb
              - how-tos/streaming-tokens.ipynb
              - how-tos/streaming-specific-nodes.ipynb
@@ -154,7 +147,6 @@ nav:
              - how-tos/streaming-subgraphs.ipynb
              - how-tos/disable-streaming.ipynb
          - Tool calling:
-              - Tool calling: how-tos#tool-calling
              - how-tos/tool-calling.ipynb
              - how-tos/tool-calling-errors.ipynb
              - how-tos/pass-run-time-values-to-tools.ipynb
@@ -162,31 +154,26 @@ nav:
              - how-tos/pass-config-to-tools.ipynb
              - how-tos/many-tools.ipynb
          - Subgraphs:
-              - Subgraphs: how-tos#subgraphs
              - how-tos/subgraph.ipynb
              - how-tos/subgraphs-manage-state.ipynb
              - how-tos/subgraph-transform-state.ipynb
          - Multi-agent:
-              - Multi-agent: how-tos#multi-agent
              - how-tos/agent-handoffs.ipynb
              - how-tos/multi-agent-network.ipynb
              - how-tos/multi-agent-multi-turn-convo.ipynb
              - how-tos/multi-agent-network-functional.ipynb
              - how-tos/multi-agent-multi-turn-convo-functional.ipynb
          - State Management:
-              - State Management: how-tos#state-management
              - how-tos/state-model.ipynb
              - how-tos/input_output_schema.ipynb
              - how-tos/pass_private_state.ipynb
          - Other:
-              - Other: how-tos#other
              - how-tos/async.ipynb
              - how-tos/react-agent-structured-output.ipynb
              - how-tos/run-id-langsmith.ipynb
              - how-tos/autogen-integration.ipynb
              - how-tos/autogen-integration-functional.ipynb
          - Prebuilt ReAct Agent:
-              - Prebuilt ReAct Agent: how-tos#prebuilt-react-agent
              - how-tos/create-react-agent.ipynb
              - how-tos/create-react-agent-memory.ipynb
              - how-tos/create-react-agent-system-prompt.ipynb
@@ -196,9 +183,7 @@ nav:
              - how-tos/react-agent-from-scratch.ipynb
              - how-tos/react-agent-from-scratch-functional.ipynb
        - LangGraph Platform:
-            - LangGraph Platform: how-tos#langgraph-platform
            - Application Structure:
-                - Application Structure: how-tos#application-structure
                - cloud/deployment/setup.md
                - cloud/deployment/setup_pyproject.md
                - cloud/deployment/setup_javascript.md
@@ -208,7 +193,6 @@ nav:
                - cloud/deployment/graph_rebuild.md
                - how-tos/autogen-langgraph-platform.ipynb
            - Deployment:
-                - Deployment: how-tos#deployment
                - cloud/deployment/cloud.md
                - cloud/deployment/self_hosted_data_plane.md
                - cloud/deployment/self_hosted_control_plane.md
@@ -219,25 +203,21 @@ nav:
            - Data Management:
                - how-tos/ttl/configure_ttl.md
            - Authentication & Access Control:
-                - Authentication & Access Control: how-tos#authentication-access-control
                - how-tos/auth/custom_auth.md
                - how-tos/auth/openapi_security.md
            - Assistants:
-                - Assistants: how-tos#assistants
                - cloud/how-tos/configuration_cloud.md
                - cloud/how-tos/assistant_versioning.md
            - Threads:
-                - Threads: how-tos#threads
                - cloud/how-tos/copy_threads.md
                - cloud/how-tos/check_thread_status.md
            - Runs:
-                - Runs: how-tos#runs
                - cloud/how-tos/background_run.md
                - cloud/how-tos/same-thread.md
                - cloud/how-tos/cron_jobs.md
                - cloud/how-tos/stateless_runs.md
+                - cloud/how-tos/configurable_headers.md
            - Streaming:
-                - Streaming: how-tos#streaming_1
                - cloud/how-tos/stream_values.md
                - cloud/how-tos/stream_updates.md
                - cloud/how-tos/stream_messages.md
@@ -247,14 +227,12 @@ nav:
                - cloud/how-tos/use_stream_react.md
                - cloud/how-tos/generative_ui_react.md
            - Human-in-the-loop:
-                - Human-in-the-loop: how-tos#human-in-the-loop_1
                - cloud/how-tos/human_in_the_loop_breakpoint.md
                - cloud/how-tos/human_in_the_loop_user_input.md
                - cloud/how-tos/human_in_the_loop_edit_state.md
                - cloud/how-tos/human_in_the_loop_time_travel.md
                - cloud/how-tos/human_in_the_loop_review_tool_calls.md
            - Double-texting:
-                - Double-texting: how-tos#double-texting
                - cloud/how-tos/interrupt_concurrent.md
                - cloud/how-tos/rollback_concurrent.md
                - cloud/how-tos/reject_concurrent.md
@@ -264,12 +242,10 @@ nav:
            - Cron Jobs:
                - cloud/how-tos/cron_jobs.md
            - Modifying the API:
-                - Modifying the API: how-tos#modifying-the-api
                - how-tos/http/custom_lifespan.md
                - how-tos/http/custom_middleware.md
                - how-tos/http/custom_routes.md
            - LangGraph Studio:
-                - LangGraph Studio: how-tos#langgraph-studio
                - cloud/how-tos/test_deployment.md
                - cloud/how-tos/test_local_deployment.md
                - cloud/how-tos/invoke_studio.md
@@ -281,7 +257,6 @@ nav:
      - Concepts:
        - concepts/index.md
        - LangGraph:
-          - LangGraph: concepts#langgraph
          - concepts/high_level.md
          - concepts/low_level.md
          - concepts/agentic_concepts.md
@@ -297,9 +272,7 @@ nav:
          - concepts/durable_execution.md
          - concepts/pregel.md
        - LangGraph Platform:
-          - LangGraph Platform: concepts#langgraph-platform
          - High Level:
-            - High Level: concepts#high-level
            - concepts/langgraph_platform.md
            - concepts/platform_architecture.md
            - concepts/scalability_and_resilience.md
@@ -308,7 +281,6 @@ nav:
            - concepts/plans.md
            - concepts/template_applications.md
          - Components:
-            - Components: concepts#components
            - concepts/langgraph_control_plane.md
            - concepts/langgraph_data_plane.md
            - concepts/langgraph_server.md
@@ -317,13 +289,11 @@ nav:
            - concepts/sdk.md
            - how-tos/use-remote-graph.md
          - LangGraph Server:
-            - LangGraph Server: concepts#langgraph-server
            - concepts/application_structure.md
            - concepts/assistants.md
            - concepts/double_texting.md
            - concepts/auth.md
          - Deployment Options:
-            - Deployment Options: concepts#deployment-options
            - concepts/langgraph_cloud.md
            - concepts/langgraph_self_hosted_data_plane.md
            - concepts/langgraph_self_hosted_control_plane.md
@@ -332,18 +302,15 @@ nav:
      - Tutorials:
        - tutorials/index.md
        - Quick Start:
-          - Quick Start: tutorials#quick-start
          - tutorials/introduction.ipynb
          - tutorials/workflows/index.md
          - tutorials/langgraph-platform/local-server.md
          - cloud/quick_start.md
        - Chatbots:
-            - Chatbots: tutorials#chatbots
            - tutorials/customer-support/customer-support.ipynb
            - tutorials/chatbots/information-gather-prompting.ipynb
            - tutorials/code_assistant/langgraph_code_assistant.ipynb
        - RAG:
-            - RAG: tutorials#rag
            - tutorials/rag/langgraph_adaptive_rag.ipynb
            - tutorials/rag/langgraph_adaptive_rag_local.ipynb
            - tutorials/rag/langgraph_agentic_rag.ipynb
@@ -353,37 +320,30 @@ nav:
            - tutorials/rag/langgraph_self_rag_local.ipynb
            - tutorials/sql-agent.ipynb
        - Agent Architectures:
-            - Agent Architectures: tutorials#agent-architectures
            - Multi-Agent Systems:
-                - Multi-Agent Systems: tutorials#multi-agent-systems
                - tutorials/multi_agent/multi-agent-collaboration.ipynb
                - tutorials/multi_agent/agent_supervisor.ipynb
                - tutorials/multi_agent/hierarchical_agent_teams.ipynb
            - Planning Agents:
-                - Planning Agents: tutorials#planning-agents
                - tutorials/plan-and-execute/plan-and-execute.ipynb
                - tutorials/rewoo/rewoo.ipynb
                - tutorials/llm-compiler/LLMCompiler.ipynb
            - Reflection & Critique:
-                - Reflection & Critique: tutorials#reflection-critique
                - tutorials/reflection/reflection.ipynb
                - tutorials/reflexion/reflexion.ipynb
                - tutorials/tot/tot.ipynb
                - tutorials/lats/lats.ipynb
                - tutorials/self-discover/self-discover.ipynb
        - Evaluation & Analysis:
-            - Evaluation & Analysis: tutorials#evaluation
            - tutorials/chatbot-simulation-evaluation/agent-simulation-evaluation.ipynb
            - tutorials/chatbot-simulation-evaluation/langsmith-agent-simulation-evaluation.ipynb
        - Experimental:
-            - Experimental: tutorials#experimental
            - tutorials/storm/storm.ipynb
            - tutorials/tnt-llm/tnt-llm.ipynb
            - tutorials/web-navigation/web_voyager.ipynb
            - tutorials/usaco/usaco.ipynb
            - tutorials/extraction/retries.ipynb
        - LangGraph Platform:
-            - LangGraph Platform: concepts#langgraph-platform
            - tutorials/auth/getting_started.md
            - tutorials/auth/resource_auth.md
            - tutorials/auth/add_auth_server.md
@@ -533,6 +493,9 @@ extra:
          data: 0
          note: >-
            Thanks for your feedback! Please help us improve this page by adding to the discussion below.
+  shared_analytics:
+    provider: google
+    property: G-47WX3HKKY2
 validation:
  # https://www.mkdocs.org/user-guide/configuration/
  # We are still raising for omitted files because they determine the breadcrumbs for pages.
@@ -21,17 +21,17 @@ langgraph-checkpoint-sqlite = { path = "../libs/checkpoint-sqlite", develop = tr
 langgraph-checkpoint-postgres = { path = "../libs/checkpoint-postgres", develop = true }
 langgraph-sdk = {path = "../libs/sdk-py", develop = true}
 langchain-ollama = "^0.2.3"
-mkdocs = "^1.6.0"
-mkdocs-autorefs = ">=1.0.1,<1.1.0"
-mkdocstrings = "^0.25.1"
-mkdocstrings-python = "^1.10.4"
-mkdocs-minify-plugin = "^0.8.0"
-mkdocs-rss-plugin = "^1.13.1"
-mkdocs-git-committers-plugin-2 = "^2.3.0"
-mkdocs-material = {extras = ["imaging"], version = "^9.5.27"}
-markdown-callouts = "^0.4.0"
-markdown-include = "^0.8.1"
-mkdocs-exclude = "^1.0.2"
+mkdocs = "*"
+mkdocs-autorefs = "*"
+mkdocstrings = "*"
+mkdocstrings-python = "*"
+mkdocs-minify-plugin = "*"
+mkdocs-rss-plugin = "*"
+mkdocs-git-committers-plugin-2 = "*"
+mkdocs-material = {extras = ["imaging"], version = "*"}
+markdown-callouts = "*"
+markdown-include = "*"
+mkdocs-exclude = "*"
 psycopg = {extras = ["binary"], version = "^3.2.0"}
 psycopg-pool = "^3.2.0"
 pygments-ansi-color = ">=0.3"
@@ -49,6 +49,7 @@ langchain-anthropic = "^0.3.8"
 langchain-nomic = "^0.1.3"
 langchain-fireworks = "^0.2.0"
 langchain-community = "^0.3.0"
+langchain-tavily = "^0.1.5"
 langchain-experimental = "^0.3.2"
 langchain-mistralai = "^0.2.6"
 langgraph-checkpoint-mongodb = "^0.1.0"
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "annotated-types"
@@ -7,6 +7,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -32,7 +33,7 @@ typing_extensions = {version = ">=4.5", markers = "python_version < \"3.13\""}

 [package.extras]
 doc = ["Sphinx (>=7.4,<8.0)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx_rtd_theme"]
-test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "trustme", "truststore (>=0.9.1)", "uvloop (>=0.21)"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "trustme", "truststore (>=0.9.1) ; python_version >= \"3.10\"", "uvloop (>=0.21) ; platform_python_implementation == \"CPython\" and platform_system != \"Windows\" and python_version < \"3.14\""]
 trio = ["trio (>=0.26.1)"]

 [[package]]
@@ -42,6 +43,7 @@ description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "certifi-2025.1.31-py3-none-any.whl", hash = "sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe"},
    {file = "certifi-2025.1.31.tar.gz", hash = "sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651"},
@@ -54,7 +56,7 @@ description = "Foreign Function Interface for Python calling C code."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation == \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation == \"PyPy\""
 files = [
    {file = "cffi-1.17.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:df8b1c11f177bc2313ec4b2d46baec87a5f3e71fc8b45dab2ee7cae86d9aba14"},
    {file = "cffi-1.17.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8f2cdc858323644ab277e9bb925ad72ae0e67f69e804f4898c070998d50b1a67"},
@@ -135,6 +137,7 @@ description = "The Real First Universal Charset Detector. Open, modern and activ
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "charset_normalizer-3.4.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:91b36a978b5ae0ee86c394f5a54d6ef44db1de0815eb43de826d41d21e4af3de"},
    {file = "charset_normalizer-3.4.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:7461baadb4dc00fd9e0acbe254e3d7d2112e7f92ced2adc96e54ef6501c5f176"},
@@ -245,7 +248,7 @@ files = [
 [package.extras]
 dev = ["Pygments", "build", "chardet", "pre-commit", "pytest", "pytest-cov", "pytest-dependency", "ruff", "tomli", "twine"]
 hard-encoding-detection = ["chardet"]
-toml = ["tomli"]
+toml = ["tomli ; python_version < \"3.11\""]
 types = ["chardet (>=5.1.0)", "mypy", "pytest", "pytest-cov", "pytest-dependency"]

 [[package]]
@@ -279,31 +282,33 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.7"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "httpcore-1.0.7-py3-none-any.whl", hash = "sha256:a3fff8f43dc260d5bd363d9f9cf1830fa3a458b332856f34282de498ed420edd"},
-    {file = "httpcore-1.0.7.tar.gz", hash = "sha256:8551cb62a169ec7162ac7be8d4817d561f60e08eaa485234898414bb5a8a0b4c"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
@@ -318,6 +323,7 @@ description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
@@ -330,7 +336,7 @@ httpcore = "==1.*"
 idna = "*"

 [package.extras]
-brotli = ["brotli", "brotlicffi"]
+brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi ; platform_python_implementation != \"CPython\""]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
@@ -370,6 +376,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -385,6 +392,7 @@ description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -397,6 +405,7 @@ description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langchain_core-0.3.48-py3-none-any.whl", hash = "sha256:21e4fe84262b9c7ad8aefe7816439ede130893f8a64b8c965cd9695c2be91c73"},
    {file = "langchain_core-0.3.48.tar.gz", hash = "sha256:be4b2fe36d8a11fb4b6b13e0808b12aea9f25e345624ffafe1d606afb6059f21"},
@@ -416,16 +425,16 @@ typing-extensions = ">=4.7"

 [[package]]
 name = "langgraph-checkpoint"
-version = "2.0.21"
+version = "2.0.25"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.2.38,<0.4"
+langchain-core = {version = ">=0.2.38", markers = "python_version < \"4.0\""}
 ormsgpack = "^1.8.0"

 [package.source]
@@ -439,6 +448,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langsmith-0.3.13-py3-none-any.whl", hash = "sha256:73aaf52bbc293b9415fff4f6dad68df40658081eb26c9cb2c7bd1ff57cedd695"},
    {file = "langsmith-0.3.13.tar.gz", hash = "sha256:14014058cff408772acb93344e03cb64174837292d5f1ae09b2c8c1d8df45e92"},
@@ -662,6 +672,7 @@ files = [
    {file = "packaging-24.2-py3-none-any.whl", hash = "sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759"},
    {file = "packaging-24.2.tar.gz", hash = "sha256:c228a6dc5e932d346bc5739379109d49e8853dd8223571c7c5b55260edc0b97f"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "pluggy"
@@ -697,8 +708,8 @@ typing-extensions = {version = ">=4.6", markers = "python_version < \"3.13\""}
 tzdata = {version = "*", markers = "sys_platform == \"win32\""}

 [package.extras]
-binary = ["psycopg-binary (==3.2.5)"]
-c = ["psycopg-c (==3.2.5)"]
+binary = ["psycopg-binary (==3.2.5) ; implementation_name != \"pypy\""]
+c = ["psycopg-c (==3.2.5) ; implementation_name != \"pypy\""]
 dev = ["ast-comments (>=1.1.2)", "black (>=24.1.0)", "codespell (>=2.2)", "dnspython (>=2.1)", "flake8 (>=4.0)", "isort-psycopg", "isort[colors] (>=6.0)", "mypy (>=1.14)", "pre-commit (>=4.0.1)", "types-setuptools (>=57.4)", "wheel (>=0.37)"]
 docs = ["Sphinx (>=5.0)", "furo (==2022.6.21)", "sphinx-autobuild (>=2021.3.14)", "sphinx-autodoc-typehints (>=1.12)"]
 pool = ["psycopg-pool"]
@@ -802,7 +813,7 @@ description = "C parser in Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation == \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation == \"PyPy\""
 files = [
    {file = "pycparser-2.22-py3-none-any.whl", hash = "sha256:c3702b6d3dd8c7abc1afa565d7e63d53a1d0bd86cdc24edd75470f4de499cfcc"},
    {file = "pycparser-2.22.tar.gz", hash = "sha256:491c8be9c040f5390f5bf44a5b07752bd07f56edf992381b05c701439eec10f6"},
@@ -815,6 +826,7 @@ description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic-2.10.6-py3-none-any.whl", hash = "sha256:427d664bf0b8a2b34ff5dd0f5a18df00591adcee7198fbd71981054cef37b584"},
    {file = "pydantic-2.10.6.tar.gz", hash = "sha256:ca5daa827cce33de7a42be142548b0096bf05a7e7b365aebfa5f8eeec7128236"},
@@ -827,7 +839,7 @@ typing-extensions = ">=4.12.2"

 [package.extras]
 email = ["email-validator (>=2.0.0)"]
-timezone = ["tzdata"]
+timezone = ["tzdata ; python_version >= \"3.9\" and platform_system == \"Windows\""]

 [[package]]
 name = "pydantic-core"
@@ -836,6 +848,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.27.2-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:2d367ca20b2f14095a8f4fa1210f5a7b78b8a20009ecced6b12818f455b1e9fa"},
    {file = "pydantic_core-2.27.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:491a2b73db93fab69731eaee494f320faa4e093dbed776be1a829c2eb222c34c"},
@@ -1009,6 +1022,7 @@ description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pytest_watcher-0.4.3-py3-none-any.whl", hash = "sha256:d59b1e1396f33a65ea4949b713d6884637755d641646960056a90b267c3460f9"},
    {file = "pytest_watcher-0.4.3.tar.gz", hash = "sha256:0cb0e4661648c8c0ff2b2d25efa5a8e421784b9e4c60fcecbf9b7c30b2d731b3"},
@@ -1025,6 +1039,7 @@ description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:0a9a2848a5b7feac301353437eb7d5957887edbf81d56e903999a75a3d743086"},
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:29717114e51c84ddfba879543fb232a6ed60086602313ca38cce623c1d62cfbf"},
@@ -1088,6 +1103,7 @@ description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -1110,6 +1126,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -1165,6 +1182,7 @@ description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "tenacity-9.0.0-py3-none-any.whl", hash = "sha256:93de0c98785b27fcf659856aa9f54bfbd399e29969b0621bc7f762bd441b4539"},
    {file = "tenacity-9.0.0.tar.gz", hash = "sha256:807f37ca97d62aa361264d497b0e31e92b8027044942bfa756160d908320d73b"},
@@ -1249,13 +1267,14 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 optional = false
 python-versions = ">=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "urllib3-2.3.0-py3-none-any.whl", hash = "sha256:1cee9ad369867bfdbbb48b7dd50374c0967a0bb7710050facf0dd6911440e3df"},
    {file = "urllib3-2.3.0.tar.gz", hash = "sha256:f8c5449b3cf0861679ce7e0503c7b44b5ec981bec0d1d3795a07f1ba96f0204d"},
 ]

 [package.extras]
-brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+brotli = ["brotli (>=1.0.9) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=0.8.0) ; platform_python_implementation != \"CPython\""]
 h2 = ["h2 (>=4,<5)"]
 socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
 zstd = ["zstandard (>=0.18.0)"]
@@ -1267,6 +1286,7 @@ description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "watchdog-6.0.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:d1cdb490583ebd691c012b3d6dae011000fe42edb7a82ece80965b42abd61f26"},
    {file = "watchdog-6.0.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bc64ab3bdb6a04d69d4023b29422170b74681784ffb9463ed4870cf2f3e66112"},
@@ -1310,6 +1330,7 @@ description = "Zstandard bindings for Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "zstandard-0.23.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bf0a05b6059c0528477fba9054d09179beb63744355cab9f38059548fedd46a9"},
    {file = "zstandard-0.23.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:fc9ca1c9718cb3b06634c7c8dec57d24e9438b2aa9a0f02b8bb36bf478538880"},
@@ -1418,5 +1439,5 @@ cffi = ["cffi (>=1.11)"]

 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9.0,<4.0"
-content-hash = "4b0efdd115566f294fcd876334f9c3787aafc81f2689473759d88189a71d4635"
+python-versions = ">=3.9"
+content-hash = "26b7d9b5b7738550356c178f951a616a29b4f3ec6690db2e1329f06daef8220f"
@@ -9,7 +9,7 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 packages = [{ include = "langgraph" }]

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
+python = ">=3.9"
 langgraph-checkpoint = "^2.0.21"
 orjson = ">=3.10.1"
 psycopg = "^3.2.0"
@@ -25,7 +25,7 @@ pytest-mock = "^3.11.1"
 mypy = "^1.10.0"
 psycopg = {extras = ["binary"], version = ">=3.0.0"}
 langgraph-checkpoint = {path = "../checkpoint", develop = true}
-pytest-watcher = "^0.4.3"
+pytest-watcher = { version = ">=0.4.3", python = "<4.0" }

 [tool.pytest.ini_options]
 # --strict-markers will raise errors on unknown marks.
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.1.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "aiosqlite"
@@ -26,6 +26,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -38,6 +39,7 @@ description = "High level compatibility layer for multiple asynchronous event lo
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "anyio-4.4.0-py3-none-any.whl", hash = "sha256:c1b2d8f46a8a812513012e1107cb0e68c17159a7a594208005a57dc776e1bdc7"},
    {file = "anyio-4.4.0.tar.gz", hash = "sha256:5aadc6a1bbb7cdb0bede386cac5e2940f5e2ff3aa20277e991cf028e0585ce94"},
@@ -61,6 +63,7 @@ description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "certifi-2024.7.4-py3-none-any.whl", hash = "sha256:c198e21b1289c2ab85ee4e67bb4b4ef3ead0892059901a8d5b622f24a1101e90"},
    {file = "certifi-2024.7.4.tar.gz", hash = "sha256:5a1e7645bc0ec61a09e26c36f6106dd4cf40c6db3a1fb6352b0244e7fb057c7b"},
@@ -73,6 +76,7 @@ description = "The Real First Universal Charset Detector. Open, modern and activ
 optional = false
 python-versions = ">=3.7.0"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "charset-normalizer-3.3.2.tar.gz", hash = "sha256:f30c3cb33b24454a82faecaf01b19c18562b1e89558fb6c56de4d9118a032fd5"},
    {file = "charset_normalizer-3.3.2-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:25baf083bf6f6b341f4121c2f3c548875ee6f5339300e08be3f2b2ba1721cdd3"},
@@ -215,54 +219,54 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.5"
+version = "0.13.2"
 description = "A minimal low-level HTTP client."
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "httpcore-1.0.5-py3-none-any.whl", hash = "sha256:421f18bac248b25d310f3cacd198d55b8e6125c107797b609ff9b7a6ba7991b5"},
-    {file = "httpcore-1.0.5.tar.gz", hash = "sha256:34a38e2f9291467ee3b44e89dd52615370e152954ba21721378a87b2960f7a61"},
+    {file = "httpcore-0.13.2-py3-none-any.whl", hash = "sha256:52b7d9413f6f5592a667de9209d70d4d41aba3fb0540dd7c93475c78b85941e9"},
+    {file = "httpcore-0.13.2.tar.gz", hash = "sha256:c16efbdf643e1b57bde0adc12c53b08645d7d92d6d345a3f71adfc2a083e7fd2"},
 ]

 [package.dependencies]
-certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = "==0.*"
+sniffio = "==1.*"

 [package.extras]
-asyncio = ["anyio (>=4.0,<5.0)"]
 http2 = ["h2 (>=3,<5)"]
-socks = ["socksio (==1.*)"]
-trio = ["trio (>=0.22.0,<0.26.0)"]

 [[package]]
 name = "httpx"
-version = "0.27.2"
+version = "0.25.1"
 description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "httpx-0.27.2-py3-none-any.whl", hash = "sha256:7bb2708e112d8fdd7829cd4243970f0c223274051cb35ee80c03301ee29a3df0"},
-    {file = "httpx-0.27.2.tar.gz", hash = "sha256:f7c2be1d2f3c3c3160d441802406b206c2b76f5947b11115e6df10c6c65e66c2"},
+    {file = "httpx-0.25.1-py3-none-any.whl", hash = "sha256:fec7d6cc5c27c578a391f7e87b9aa7d3d8fbcd034f6399f9f79b45bcc12a866a"},
+    {file = "httpx-0.25.1.tar.gz", hash = "sha256:ffd96d5cf901e63863d9f1b4b6807861dbea4d301613415d9e6e57ead15fc5d0"},
 ]

 [package.dependencies]
 anyio = "*"
 certifi = "*"
-httpcore = "==1.*"
+httpcore = "*"
 idna = "*"
 sniffio = "*"

@@ -271,7 +275,6 @@ brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
-zstd = ["zstandard (>=0.18.0)"]

 [[package]]
 name = "idna"
@@ -280,6 +283,7 @@ description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.5"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"},
    {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
@@ -304,6 +308,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -319,6 +324,7 @@ description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -331,6 +337,7 @@ description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langchain_core-0.3.15-py3-none-any.whl", hash = "sha256:3d4ca6dbb8ed396a6ee061063832a2451b0ce8c345570f7b086ffa7288e4fa29"},
    {file = "langchain_core-0.3.15.tar.gz", hash = "sha256:b1a29787a4ffb7ec2103b4e97d435287201da7809b369740dd1e32f176325aba"},
@@ -350,16 +357,16 @@ typing-extensions = ">=4.7"

 [[package]]
 name = "langgraph-checkpoint"
-version = "2.0.21"
+version = "2.0.25"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.2.38,<0.4"
+langchain-core = {version = ">=0.2.38", markers = "python_version < \"4.0\""}
 ormsgpack = "^1.8.0"

 [package.source]
@@ -373,6 +380,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = false
 python-versions = "<4.0,>=3.8.1"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langsmith-0.1.147-py3-none-any.whl", hash = "sha256:7166fc23b965ccf839d64945a78e9f1157757add228b086141eb03a60d699a15"},
    {file = "langsmith-0.1.147.tar.gz", hash = "sha256:2e933220318a4e73034657103b3b1a3a6109cc5db3566a7e8e03be8d6d7def7a"},
@@ -458,7 +466,7 @@ description = "Fast, correct Python JSON library supporting dataclasses, datetim
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation != \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation != \"PyPy\""
 files = [
    {file = "orjson-3.10.6-cp310-cp310-macosx_10_15_x86_64.macosx_11_0_arm64.macosx_10_15_universal2.whl", hash = "sha256:fb0ee33124db6eaa517d00890fc1a55c3bfe1cf78ba4a8899d71a06f2d6ff5c7"},
    {file = "orjson-3.10.6-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:9c1c4b53b24a4c06547ce43e5fee6ec4e0d8fe2d597f4647fc033fd205707365"},
@@ -562,6 +570,7 @@ files = [
    {file = "packaging-24.1-py3-none-any.whl", hash = "sha256:5b8f2217dbdbd2f7f384c41c628544e6d52f2d0f53c6d0c3ea61aa5d1d7ff124"},
    {file = "packaging-24.1.tar.gz", hash = "sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "pluggy"
@@ -586,6 +595,7 @@ description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic-2.8.2-py3-none-any.whl", hash = "sha256:73ee9fddd406dc318b885c7a2eab8a6472b68b8fb5ba8150949fc3db939f23c8"},
    {file = "pydantic-2.8.2.tar.gz", hash = "sha256:6f62c13d067b0755ad1c21a34bdd06c0c12625a22b0fc09c6b149816604f7c2a"},
@@ -609,6 +619,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.20.1-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:3acae97ffd19bf091c72df4d726d552c473f3576409b2a7ca36b2f535ffff4a3"},
    {file = "pydantic_core-2.20.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:41f4c96227a67a013e7de5ff8f20fb496ce573893b7f4f2707d065907bffdbd6"},
@@ -771,6 +782,7 @@ description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pytest_watcher-0.4.2-py3-none-any.whl", hash = "sha256:a43949ba67dd8d7e1fd0de5eea44a999081f0aec9f93b4e744264b4c6a3d9bbe"},
    {file = "pytest_watcher-0.4.2.tar.gz", hash = "sha256:7b292f025ca19617cd7567c228c6187b5087f2da9e4d2cf6e144e5764a0471b0"},
@@ -787,6 +799,7 @@ description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "PyYAML-6.0.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:d858aa552c999bc8a8d57426ed01e40bef403cd8ccdd0fc5f6f04a00414cac2a"},
    {file = "PyYAML-6.0.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:fd66fc5d0da6d9815ba2cebeb4205f95818ff4b79c3ebe268e75d961704af52f"},
@@ -848,6 +861,7 @@ description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -870,6 +884,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -913,6 +928,7 @@ description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -925,6 +941,7 @@ description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "tenacity-8.5.0-py3-none-any.whl", hash = "sha256:b594c2a5945830c267ce6b79a166228323ed52718f30302c1359836112346687"},
    {file = "tenacity-8.5.0.tar.gz", hash = "sha256:8bc6c0c8a09b31e6cad13c47afbed1a567518250a9a171418582ed8d9c20ca78"},
@@ -966,6 +983,7 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "urllib3-2.2.2-py3-none-any.whl", hash = "sha256:a448b2f64d686155468037e1ace9f2d2199776e17f0a46610480d311f73e3472"},
    {file = "urllib3-2.2.2.tar.gz", hash = "sha256:dd505485549a7a552833da5e6063639d0d177c04f23bc3864e41e5dc5f612168"},
@@ -984,6 +1002,7 @@ description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "watchdog-4.0.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:da2dfdaa8006eb6a71051795856bedd97e5b03e57da96f98e375682c48850645"},
    {file = "watchdog-4.0.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:e93f451f2dfa433d97765ca2634628b789b49ba8b504fdde5837cdcf25fdb53b"},
@@ -1024,5 +1043,5 @@ watchmedo = ["PyYAML (>=3.10)"]

 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9.0"
-content-hash = "21896b8d3d283d95bc3988aa93f06faf5c47dadc2a8822e5a35672b9cb054693"
+python-versions = ">=3.9"
+content-hash = "dbe7f74e82d14d3a746dbd04ac18dcc0a9d1d95af5e5a98c6bb6ab298e80b19d"
@@ -9,7 +9,7 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 packages = [{ include = "langgraph" }]

 [tool.poetry.dependencies]
-python = "^3.9.0"
+python = ">=3.9"
 langgraph-checkpoint = "^2.0.15"
 aiosqlite = ">=0.20,<0.22"

@@ -19,7 +19,7 @@ codespell = "^2.2.0"
 pytest = "^7.2.1"
 pytest-asyncio = "^0.21.1"
 pytest-mock = "^3.11.1"
-pytest-watcher = "^0.4.1"
+pytest-watcher = { version = ">=0.4.1", python = "<4.0" }
 mypy = "^1.10.0"
 langgraph-checkpoint = {path = "../checkpoint", develop = true}

@@ -93,6 +93,7 @@ class InMemorySaver(
        if factory is not defaultdict:
            self.stack.enter_context(self.storage)  # type: ignore[arg-type]
            self.stack.enter_context(self.writes)  # type: ignore[arg-type]
+            self.stack.enter_context(self.blobs)  # type: ignore[arg-type]

    def __enter__(self) -> "InMemorySaver":
        return self.stack.__enter__()
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "annotated-types"
@@ -7,6 +7,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -19,6 +20,7 @@ description = "High level compatibility layer for multiple asynchronous event lo
 optional = false
 python-versions = ">=3.9"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "anyio-4.9.0-py3-none-any.whl", hash = "sha256:9f76d541cad6e36af7beb62e978876f3b41e3e04f2c1fbf0884604c0a9c4d93c"},
    {file = "anyio-4.9.0.tar.gz", hash = "sha256:673c0c244e15788651a4ff38710fea9675823028a6f08a5eda409e0c9840a028"},
@@ -32,7 +34,7 @@ typing_extensions = {version = ">=4.5", markers = "python_version < \"3.13\""}

 [package.extras]
 doc = ["Sphinx (>=8.2,<9.0)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx_rtd_theme"]
-test = ["anyio[trio]", "blockbuster (>=1.5.23)", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "trustme", "truststore (>=0.9.1)", "uvloop (>=0.21)"]
+test = ["anyio[trio]", "blockbuster (>=1.5.23)", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "trustme", "truststore (>=0.9.1) ; python_version >= \"3.10\"", "uvloop (>=0.21) ; platform_python_implementation == \"CPython\" and platform_system != \"Windows\" and python_version < \"3.14\""]
 trio = ["trio (>=0.26.1)"]

 [[package]]
@@ -42,6 +44,7 @@ description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "certifi-2024.7.4-py3-none-any.whl", hash = "sha256:c198e21b1289c2ab85ee4e67bb4b4ef3ead0892059901a8d5b622f24a1101e90"},
    {file = "certifi-2024.7.4.tar.gz", hash = "sha256:5a1e7645bc0ec61a09e26c36f6106dd4cf40c6db3a1fb6352b0244e7fb057c7b"},
@@ -54,6 +57,7 @@ description = "The Real First Universal Charset Detector. Open, modern and activ
 optional = false
 python-versions = ">=3.7.0"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "charset-normalizer-3.3.2.tar.gz", hash = "sha256:f30c3cb33b24454a82faecaf01b19c18562b1e89558fb6c56de4d9118a032fd5"},
    {file = "charset_normalizer-3.3.2-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:25baf083bf6f6b341f4121c2f3c548875ee6f5339300e08be3f2b2ba1721cdd3"},
@@ -162,7 +166,7 @@ files = [
 [package.extras]
 dev = ["Pygments", "build", "chardet", "pre-commit", "pytest", "pytest-cov", "pytest-dependency", "ruff", "tomli", "twine"]
 hard-encoding-detection = ["chardet"]
-toml = ["tomli"]
+toml = ["tomli ; python_version < \"3.11\""]
 types = ["chardet (>=5.1.0)", "mypy", "pytest", "pytest-cov", "pytest-dependency"]

 [[package]]
@@ -185,6 +189,7 @@ description = "Easily serialize dataclasses to and from JSON."
 optional = false
 python-versions = "<4.0,>=3.7"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "dataclasses_json-0.6.7-py3-none-any.whl", hash = "sha256:0dbf33f26c8d5305befd61b39d2b3414e8a407bedc2834dea9b8d642666fb40a"},
    {file = "dataclasses_json-0.6.7.tar.gz", hash = "sha256:b6b3e528266ea45b9535223bc53ca645f5208833c29229e847b3f26a1cc55fc0"},
@@ -212,31 +217,33 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.7"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "httpcore-1.0.7-py3-none-any.whl", hash = "sha256:a3fff8f43dc260d5bd363d9f9cf1830fa3a458b332856f34282de498ed420edd"},
-    {file = "httpcore-1.0.7.tar.gz", hash = "sha256:8551cb62a169ec7162ac7be8d4817d561f60e08eaa485234898414bb5a8a0b4c"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
@@ -251,6 +258,7 @@ description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
@@ -263,7 +271,7 @@ httpcore = "==1.*"
 idna = "*"

 [package.extras]
-brotli = ["brotli", "brotlicffi"]
+brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi ; platform_python_implementation != \"CPython\""]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
@@ -276,6 +284,7 @@ description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.5"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"},
    {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
@@ -300,6 +309,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -315,6 +325,7 @@ description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -327,6 +338,7 @@ description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.8.1"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langchain_core-0.2.43-py3-none-any.whl", hash = "sha256:619601235113298ebf8252a349754b7c28d3cf7166c7c922da24944b78a9363a"},
    {file = "langchain_core-0.2.43.tar.gz", hash = "sha256:42c2ef6adedb911f4254068b6adc9eb4c4075f6c8cb3d83590d3539a815695f5"},
@@ -351,6 +363,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = false
 python-versions = "<4.0,>=3.8.1"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langsmith-0.1.147-py3-none-any.whl", hash = "sha256:7166fc23b965ccf839d64945a78e9f1157757add228b086141eb03a60d699a15"},
    {file = "langsmith-0.1.147.tar.gz", hash = "sha256:2e933220318a4e73034657103b3b1a3a6109cc5db3566a7e8e03be8d6d7def7a"},
@@ -376,6 +389,7 @@ description = "A lightweight library for converting complex datatypes to and fro
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "marshmallow-3.21.3-py3-none-any.whl", hash = "sha256:86ce7fb914aa865001a4b2092c4c2872d13bc347f3d42673272cabfdbad386f1"},
    {file = "marshmallow-3.21.3.tar.gz", hash = "sha256:4f57c5e050a54d66361e826f94fba213eb10b67b2fdb02c3e0343ce207ba1662"},
@@ -456,7 +470,7 @@ description = "Fast, correct Python JSON library supporting dataclasses, datetim
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "platform_python_implementation != \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation != \"PyPy\""
 files = [
    {file = "orjson-3.10.6-cp310-cp310-macosx_10_15_x86_64.macosx_11_0_arm64.macosx_10_15_universal2.whl", hash = "sha256:fb0ee33124db6eaa517d00890fc1a55c3bfe1cf78ba4a8899d71a06f2d6ff5c7"},
    {file = "orjson-3.10.6-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:9c1c4b53b24a4c06547ce43e5fee6ec4e0d8fe2d597f4647fc033fd205707365"},
@@ -560,6 +574,7 @@ files = [
    {file = "packaging-24.1-py3-none-any.whl", hash = "sha256:5b8f2217dbdbd2f7f384c41c628544e6d52f2d0f53c6d0c3ea61aa5d1d7ff124"},
    {file = "packaging-24.1.tar.gz", hash = "sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "pluggy"
@@ -584,6 +599,7 @@ description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic-2.8.2-py3-none-any.whl", hash = "sha256:73ee9fddd406dc318b885c7a2eab8a6472b68b8fb5ba8150949fc3db939f23c8"},
    {file = "pydantic-2.8.2.tar.gz", hash = "sha256:6f62c13d067b0755ad1c21a34bdd06c0c12625a22b0fc09c6b149816604f7c2a"},
@@ -607,6 +623,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.20.1-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:3acae97ffd19bf091c72df4d726d552c473f3576409b2a7ca36b2f535ffff4a3"},
    {file = "pydantic_core-2.20.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:41f4c96227a67a013e7de5ff8f20fb496ce573893b7f4f2707d065907bffdbd6"},
@@ -769,6 +786,7 @@ description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pytest_watcher-0.4.2-py3-none-any.whl", hash = "sha256:a43949ba67dd8d7e1fd0de5eea44a999081f0aec9f93b4e744264b4c6a3d9bbe"},
    {file = "pytest_watcher-0.4.2.tar.gz", hash = "sha256:7b292f025ca19617cd7567c228c6187b5087f2da9e4d2cf6e144e5764a0471b0"},
@@ -785,6 +803,7 @@ description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.6"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "PyYAML-6.0.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:d858aa552c999bc8a8d57426ed01e40bef403cd8ccdd0fc5f6f04a00414cac2a"},
    {file = "PyYAML-6.0.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:fd66fc5d0da6d9815ba2cebeb4205f95818ff4b79c3ebe268e75d961704af52f"},
@@ -846,6 +865,7 @@ description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -868,6 +888,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -911,6 +932,7 @@ description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -923,6 +945,7 @@ description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "tenacity-8.5.0-py3-none-any.whl", hash = "sha256:b594c2a5945830c267ce6b79a166228323ed52718f30302c1359836112346687"},
    {file = "tenacity-8.5.0.tar.gz", hash = "sha256:8bc6c0c8a09b31e6cad13c47afbed1a567518250a9a171418582ed8d9c20ca78"},
@@ -956,6 +979,7 @@ files = [
    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "typing-inspect"
@@ -964,6 +988,7 @@ description = "Runtime inspection utilities for typing module."
 optional = false
 python-versions = "*"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "typing_inspect-0.9.0-py3-none-any.whl", hash = "sha256:9ee6fc59062311ef8547596ab6b955e1b8aa46242d854bfc78f4f6b0eff35f9f"},
    {file = "typing_inspect-0.9.0.tar.gz", hash = "sha256:b23fc42ff6f6ef6954e4852c1fb512cdd18dbea03134f91f856a95ccc9461f78"},
@@ -980,13 +1005,14 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 optional = false
 python-versions = ">=3.8"
 groups = ["main"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "urllib3-2.2.2-py3-none-any.whl", hash = "sha256:a448b2f64d686155468037e1ace9f2d2199776e17f0a46610480d311f73e3472"},
    {file = "urllib3-2.2.2.tar.gz", hash = "sha256:dd505485549a7a552833da5e6063639d0d177c04f23bc3864e41e5dc5f612168"},
 ]

 [package.extras]
-brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+brotli = ["brotli (>=1.0.9) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=0.8.0) ; platform_python_implementation != \"CPython\""]
 h2 = ["h2 (>=4,<5)"]
 socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
 zstd = ["zstandard (>=0.18.0)"]
@@ -998,6 +1024,7 @@ description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "watchdog-4.0.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:da2dfdaa8006eb6a71051795856bedd97e5b03e57da96f98e375682c48850645"},
    {file = "watchdog-4.0.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:e93f451f2dfa433d97765ca2634628b789b49ba8b504fdde5837cdcf25fdb53b"},
@@ -1038,5 +1065,5 @@ watchmedo = ["PyYAML (>=3.10)"]

 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9.0,<4.0"
-content-hash = "db4bfc26829b1abd13c9426d74dc26100f36a6777e965a32eed4cc1ae17a8c14"
+python-versions = ">=3.9"
+content-hash = "24a87064b45e94994ef6ced60b68bd58ead04f10a2fcd85120e5a7c035264bbf"
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-checkpoint"
-version = "2.0.24"
+version = "2.0.25"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 license = "MIT"
@@ -9,8 +9,8 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 packages = [{ include = "langgraph" }]

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
-langchain-core = ">=0.2.38,<0.4"
+python = ">=3.9"
+langchain-core = { version = ">=0.2.38", python = "<4.0" }
 ormsgpack = "^1.8.0"

 [tool.poetry.group.dev.dependencies]
@@ -19,9 +19,9 @@ codespell = "^2.2.0"
 pytest = "^7.2.1"
 pytest-asyncio = "^0.21.1"
 pytest-mock = "^3.11.1"
-pytest-watcher = "^0.4.1"
+pytest-watcher = { version = ">=0.4.1", python = "<4.0" }
 mypy = "^1.10.0"
-dataclasses-json = "^0.6.7"
+dataclasses-json = { version = ">=0.6.7", python = "<4.0" }

 [tool.pytest.ini_options]
 # --strict-markers will raise errors on unknown marks.
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.

 [[package]]
 name = "anyio"
@@ -6,6 +6,7 @@ version = "4.4.0"
 description = "High level compatibility layer for multiple asynchronous event loop implementations"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
    {file = "anyio-4.4.0-py3-none-any.whl", hash = "sha256:c1b2d8f46a8a812513012e1107cb0e68c17159a7a594208005a57dc776e1bdc7"},
    {file = "anyio-4.4.0.tar.gz", hash = "sha256:5aadc6a1bbb7cdb0bede386cac5e2940f5e2ff3aa20277e991cf028e0585ce94"},
@@ -28,6 +29,7 @@ version = "2024.7.4"
 description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
+groups = ["main"]
 files = [
    {file = "certifi-2024.7.4-py3-none-any.whl", hash = "sha256:c198e21b1289c2ab85ee4e67bb4b4ef3ead0892059901a8d5b622f24a1101e90"},
    {file = "certifi-2024.7.4.tar.gz", hash = "sha256:5a1e7645bc0ec61a09e26c36f6106dd4cf40c6db3a1fb6352b0244e7fb057c7b"},
@@ -39,6 +41,7 @@ version = "8.1.7"
 description = "Composable command line interface toolkit"
 optional = false
 python-versions = ">=3.7"
+groups = ["main"]
 files = [
    {file = "click-8.1.7-py3-none-any.whl", hash = "sha256:ae74fb96c20a0277a1d615f1e4d73c8414f5a98db8b799a7931d1582f3390c28"},
    {file = "click-8.1.7.tar.gz", hash = "sha256:ca9853ad459e787e2192211578cc907e7594e294c7ccc834310722b41b9ca6de"},
@@ -53,6 +56,8 @@ version = "0.4.6"
 description = "Cross-platform colored terminal text."
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
+groups = ["main"]
+markers = "platform_system == \"Windows\""
 files = [
    {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
    {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -64,6 +69,8 @@ version = "1.2.1"
 description = "Backport of PEP 654 (exception groups)"
 optional = false
 python-versions = ">=3.7"
+groups = ["main"]
+markers = "python_version < \"3.11\""
 files = [
    {file = "exceptiongroup-1.2.1-py3-none-any.whl", hash = "sha256:5258b9ed329c5bbdd31a309f53cbfb0b155341807f6ff7606a1e801a891b29ad"},
    {file = "exceptiongroup-1.2.1.tar.gz", hash = "sha256:a4785e48b045528f5bfe627b6ad554ff32def154f42372786903b7abcfe1aa16"},
@@ -74,45 +81,48 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.5"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "httpcore-1.0.5-py3-none-any.whl", hash = "sha256:421f18bac248b25d310f3cacd198d55b8e6125c107797b609ff9b7a6ba7991b5"},
-    {file = "httpcore-1.0.5.tar.gz", hash = "sha256:34a38e2f9291467ee3b44e89dd52615370e152954ba21721378a87b2960f7a61"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
-trio = ["trio (>=0.22.0,<0.26.0)"]
+trio = ["trio (>=0.22.0,<1.0)"]

 [[package]]
 name = "httpx"
-version = "0.27.0"
+version = "0.28.1"
 description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "httpx-0.27.0-py3-none-any.whl", hash = "sha256:71d5465162c13681bff01ad59b2cc68dd838ea1f10e51574bac27103f00c91a5"},
-    {file = "httpx-0.27.0.tar.gz", hash = "sha256:a0cb88a46f32dc874e04ee956e4c2764aba2aa228f650b06788ba6bda2962ab5"},
+    {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
+    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
 ]

 [package.dependencies]
@@ -120,13 +130,13 @@ anyio = "*"
 certifi = "*"
 httpcore = "==1.*"
 idna = "*"
-sniffio = "*"

 [package.extras]
 brotli = ["brotli", "brotlicffi"]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
+zstd = ["zstandard (>=0.18.0)"]

 [[package]]
 name = "httpx-sse"
@@ -134,6 +144,7 @@ version = "0.4.0"
 description = "Consume Server-Sent Event (SSE) messages with HTTPX."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
    {file = "httpx-sse-0.4.0.tar.gz", hash = "sha256:1e81a3a3070ce322add1d3529ed42eb5f70817f45ed6ec915ab753f961139721"},
    {file = "httpx_sse-0.4.0-py3-none-any.whl", hash = "sha256:f329af6eae57eaa2bdfd962b42524764af68075ea87370a2de920af5341e318f"},
@@ -145,6 +156,7 @@ version = "3.7"
 description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.5"
+groups = ["main"]
 files = [
    {file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"},
    {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
@@ -156,6 +168,7 @@ version = "0.1.52"
 description = "CLI for interacting with LangGraph API"
 optional = false
 python-versions = "^3.9.0,<4.0"
+groups = ["main"]
 files = []
 develop = true

@@ -172,6 +185,7 @@ version = "0.1.29"
 description = "SDK for interacting with LangGraph API"
 optional = false
 python-versions = "^3.9.0,<4.0"
+groups = ["main"]
 files = []
 develop = true

@@ -190,6 +204,7 @@ version = "3.10.5"
 description = "Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
    {file = "orjson-3.10.5-cp310-cp310-macosx_10_15_x86_64.macosx_11_0_arm64.macosx_10_15_universal2.whl", hash = "sha256:545d493c1f560d5ccfc134803ceb8955a14c3fcb47bbb4b2fee0232646d0b932"},
    {file = "orjson-3.10.5-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:f4324929c2dd917598212bfd554757feca3e5e0fa60da08be11b4aa8b90013c1"},
@@ -245,6 +260,7 @@ version = "1.3.1"
 description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
+groups = ["main"]
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -256,12 +272,14 @@ version = "4.12.2"
 description = "Backported and Experimental Type Hints for Python 3.8+"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
+markers = "python_version < \"3.11\""
 files = [
    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
 ]

 [metadata]
-lock-version = "2.0"
+lock-version = "2.1"
 python-versions = "^3.9.0,<4.0"
 content-hash = "ec5109729f30d2033a10a10e8f8d3ed94c7d96d5d31025b4815b0123664bb063"
@@ -8,7 +8,7 @@ packages = []
 package-mode = false

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
+python = ">=3.9"
 langgraph-cli = {path = "../../cli", develop = true}
 langgraph-sdk = {path = "../../sdk-py", develop = true}

@@ -17,6 +17,7 @@ from langgraph_cli.config import (
    AuthConfig,
    CheckpointerConfig,
    Config,
+    ConfigurableHeaderConfig,
    CorsConfig,
    HttpConfig,
    IndexConfig,
@@ -112,6 +113,7 @@ def add_descriptions_to_schema(schema, cls):
                ThreadTTLConfig,
                CheckpointerConfig,
                TTLConfig,
+                ConfigurableHeaderConfig,
            ]:
                if potential_cls.__name__ == def_name:
                    add_descriptions_to_schema(def_schema, potential_cls)
@@ -619,20 +619,30 @@
    zod "^3.22.4"
    zod-to-json-schema "^3.22.3"

-"@langchain/langgraph-checkpoint@~0.0.6":
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-0.0.6.tgz#69f0c5c9aeefd48dcf0fa1ffa0744d8139a9f27d"
-  integrity sha512-hQsznlUMFKyOCaN9VtqNSSemfKATujNy5ePM6NX7lruk/Mmi2t7R9SsBnf9G2Yts+IaIwv3vJJaAFYEHfqbc5g==
+"@langchain/langgraph-checkpoint@~0.0.17":
+  version "0.0.17"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-checkpoint/-/langgraph-checkpoint-0.0.17.tgz#d0a8824eb0769567da54262adebe65db4ee6d58f"
+  integrity sha512-6b3CuVVYx+7x0uWLG+7YXz9j2iBa+tn2AXvkLxzEvaAsLE6Sij++8PPbS2BZzC+S/FPJdWsz6I5bsrqL0BYrCA==
  dependencies:
    uuid "^10.0.0"

-"@langchain/langgraph@^0.2.5":
-  version "0.2.5"
-  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-0.2.5.tgz#c42743a59adef03f2e1fea0c198a01694ae34d51"
-  integrity sha512-H4OgZyGRWZHBaiXXIb9avyB8zI6+3OewKn+UOZ+wUzYLKyF3cnq0cNF4/Ps+gxCa5RtOnsHIqQyRkojfXIOqgA==
+"@langchain/langgraph-sdk@~0.0.32":
+  version "0.0.70"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph-sdk/-/langgraph-sdk-0.0.70.tgz#9589f984b47de5e4a669b6008cbf01427a3d41d0"
+  integrity sha512-O8I12bfeMVz5fOrXnIcK4IdRf50IqyJTO458V56wAIHLNoi4H8/JHM+2M+Y4H2PtslXIGnvomWqlBd0eY5z/Og==
  dependencies:
-    "@langchain/langgraph-checkpoint" "~0.0.6"
-    double-ended-queue "^2.1.0-0"
+    "@types/json-schema" "^7.0.15"
+    p-queue "^6.6.2"
+    p-retry "4"
+    uuid "^9.0.0"
+
+"@langchain/langgraph@^0.2.5":
+  version "0.2.67"
+  resolved "https://registry.yarnpkg.com/@langchain/langgraph/-/langgraph-0.2.67.tgz#f154e4e8534ca78b2b73a2cd3a901d82790b0d1b"
+  integrity sha512-tu/ewNIvhIPzeW5GxGzqjmGHinnU/qbNAoLM9czdpci0PCbMysbEJ2pbJrZs7ZjaReWSnr/THkeLPQwqGOM9xw==
+  dependencies:
+    "@langchain/langgraph-checkpoint" "~0.0.17"
+    "@langchain/langgraph-sdk" "~0.0.32"
    uuid "^10.0.0"
    zod "^3.23.8"

@@ -748,7 +758,7 @@
    expect "^29.0.0"
    pretty-format "^29.0.0"

-"@types/json-schema@^7.0.9":
+"@types/json-schema@^7.0.15", "@types/json-schema@^7.0.9":
  version "7.0.15"
  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.15.tgz#596a1747233694d50f6ad8a7869fcb6f56cf5841"
  integrity sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==
@@ -1422,11 +1432,6 @@ dotenv@^16.4.5:
  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-16.4.5.tgz#cdd3b3b604cb327e286b4762e13502f717cb099f"
  integrity sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==

-double-ended-queue@^2.1.0-0:
-  version "2.1.0-0"
-  resolved "https://registry.yarnpkg.com/double-ended-queue/-/double-ended-queue-2.1.0-0.tgz#103d3527fd31528f40188130c841efdd78264e5c"
-  integrity sha512-+BNfZ+deCo8hMNpDqDnvT+c0XpJ5cUa6mqYq89bho2Ifze4URTqRkcwR399hWoTrTkbZ/XJYDgP6rc7pRgffEQ==
-
 ejs@^3.1.10:
  version "3.1.10"
  resolved "https://registry.yarnpkg.com/ejs/-/ejs-3.1.10.tgz#69ab8358b14e896f80cc39e62087b88500c3ac3b"
@@ -3685,6 +3690,11 @@ uuid@^10.0.0:
  resolved "https://registry.yarnpkg.com/uuid/-/uuid-10.0.0.tgz#5a95aa454e6e002725c79055fd42aaba30ca6294"
  integrity sha512-8XkAphELsDnEGrDxUOHB3RGvXz6TeuYSGEZBOjtTtPm2lwhGBjLgOzLHB63IUWfBpNucQjND6d3AOudO+H3RWQ==

+uuid@^9.0.0:
+  version "9.0.1"
+  resolved "https://registry.yarnpkg.com/uuid/-/uuid-9.0.1.tgz#e188d4c8853cc722220392c424cd637f32293f30"
+  integrity sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==
+
 v8-to-istanbul@^9.0.1:
  version "9.3.0"
  resolved "https://registry.yarnpkg.com/v8-to-istanbul/-/v8-to-istanbul-9.3.0.tgz#b9572abfa62bd556c16d75fdebc1a411d5ff3175"
@@ -3795,7 +3805,12 @@ zod-to-json-schema@^3.22.3:
  resolved "https://registry.yarnpkg.com/zod-to-json-schema/-/zod-to-json-schema-3.23.2.tgz#bc7e379c8050462538383e382964c03d8fe008f9"
  integrity sha512-uSt90Gzc/tUfyNqxnjlfBs8W6WSGpNBv0rVsNxP/BVSMHMKGdthPYff4xtCHYloJGM0CFxFsb3NbC0eqPhfImw==

-zod@^3.22.4, zod@^3.23.8:
+zod@^3.22.4:
  version "3.23.8"
  resolved "https://registry.yarnpkg.com/zod/-/zod-3.23.8.tgz#e37b957b5d52079769fb8097099b592f0ef4067d"
  integrity sha512-XBx9AXhXktjUqnepgTiE5flcKIYWi/rme0Eaj+5Y0lftuGBq+jyRu/md4WnuxqgP1ubdpNCsYEYPxrzVHD8d6g==
+
+zod@^3.23.8:
+  version "3.24.3"
+  resolved "https://registry.yarnpkg.com/zod/-/zod-3.24.3.tgz#1f40f750a05e477396da64438e0e1c0995dafd87"
+  integrity sha512-HhY1oqzWCQWuUqvBFnsyrtZRhyPeR7SUGv+C4+MsisMuVfSPx8HpwWqH8tRahSlt6M3PiFAcoeFhZAqIXTxoSg==
@@ -273,6 +273,33 @@ class CorsConfig(TypedDict, total=False):
    """


+class ConfigurableHeaderConfig(TypedDict):
+    """Customize which headers to include as configurable values in your runs.
+
+    By default, omits x-api-key, x-tenant-id, and x-service-key.
+
+    Exclusions (if provided) take precedence.
+
+    Each value can be a raw string with an optional wildcard.
+    """
+
+    includes: Optional[list[str]]
+    """Headers to include (if not also matches against an 'exludes' pattern.
+
+    Examples:
+        - 'user-agent'
+        - 'x-configurable-*'
+    """
+    excludes: Optional[list[str]]
+    """Headers to exclude. Applied before the 'includes' checks.
+
+    Examples:
+        - 'x-api-key'
+        - '*key*'
+        - '*token*'
+    """
+
+
 class HttpConfig(TypedDict, total=False):
    """Configuration for the built-in HTTP server that powers your deployment's routes and endpoints."""

@@ -311,6 +338,11 @@ class HttpConfig(TypedDict, total=False):
    """Optional. Defines CORS restrictions. If omitted, no special rules are set and 
    cross-origin behavior depends on default server settings.
    """
+    configurable_headers: Optional[ConfigurableHeaderConfig]
+    """Optional. Defines how headers are treated for a run's configuration.
+
+    You can include or exclude headers as configurable values to condition your
+    agent's behavior or permissions on a request's headers."""


 class Config(TypedDict, total=False):
@@ -7,7 +7,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and extra == \"inmem\" and python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -20,7 +20,7 @@ description = "High level compatibility layer for multiple asynchronous event lo
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "anyio-4.9.0-py3-none-any.whl", hash = "sha256:9f76d541cad6e36af7beb62e978876f3b41e3e04f2c1fbf0884604c0a9c4d93c"},
    {file = "anyio-4.9.0.tar.gz", hash = "sha256:673c0c244e15788651a4ff38710fea9675823028a6f08a5eda409e0c9840a028"},
@@ -43,7 +43,7 @@ description = "Utility to detect blocking calls in the async event loop"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "blockbuster-1.5.24-py3-none-any.whl", hash = "sha256:e703497b55bc72af09d60d1cd746c2f3ba7ce0c446fa256be6ccda5e7d403520"},
    {file = "blockbuster-1.5.24.tar.gz", hash = "sha256:97645775761a5d425666ec0bc99629b65c7eccdc2f770d2439850682567af4ec"},
@@ -59,7 +59,7 @@ description = "Python package for providing Mozilla's CA Bundle."
 optional = true
 python-versions = ">=3.6"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "certifi-2025.1.31-py3-none-any.whl", hash = "sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe"},
    {file = "certifi-2025.1.31.tar.gz", hash = "sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651"},
@@ -72,7 +72,7 @@ description = "Foreign Function Interface for Python calling C code."
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "cffi-1.17.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:df8b1c11f177bc2313ec4b2d46baec87a5f3e71fc8b45dab2ee7cae86d9aba14"},
    {file = "cffi-1.17.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8f2cdc858323644ab277e9bb925ad72ae0e67f69e804f4898c070998d50b1a67"},
@@ -153,7 +153,7 @@ description = "The Real First Universal Charset Detector. Open, modern and activ
 optional = true
 python-versions = ">=3.7"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "charset_normalizer-3.4.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:91b36a978b5ae0ee86c394f5a54d6ef44db1de0815eb43de826d41d21e4af3de"},
    {file = "charset_normalizer-3.4.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:7461baadb4dc00fd9e0acbe254e3d7d2112e7f92ced2adc96e54ef6501c5f176"},
@@ -271,7 +271,7 @@ description = "Pickler class to extend the standard pickle.Pickler functionality
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "cloudpickle-3.1.1-py3-none-any.whl", hash = "sha256:c8c5a44295039331ee9dad40ba100a9c7297b6f988e50e87ccdf3765a668350e"},
    {file = "cloudpickle-3.1.1.tar.gz", hash = "sha256:b216fa8ae4019d5482a8ac3c95d8f6346115d8835911fd4aefd1a445e4242c64"},
@@ -315,7 +315,7 @@ description = "cryptography is a package which provides cryptographic recipes an
 optional = true
 python-versions = "!=3.9.0,!=3.9.1,>=3.7"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "cryptography-44.0.2-cp37-abi3-macosx_10_9_universal2.whl", hash = "sha256:efcfe97d1b3c79e486554efddeb8f6f53a4cdd4cf6086642784fa31fc384e1d7"},
    {file = "cryptography-44.0.2-cp37-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:29ecec49f3ba3f3849362854b7253a9f59799e3763b0c9d0826259a88efa02f1"},
@@ -401,40 +401,40 @@ description = "Patch python built-in objects"
 optional = true
 python-versions = "*"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\" and implementation_name == \"cpython\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\" and implementation_name == \"cpython\""
 files = [
    {file = "forbiddenfruit-0.1.4.tar.gz", hash = "sha256:e3f7e66561a29ae129aac139a85d610dbf3dd896128187ed5454b6421f624253"},
 ]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = true
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.8"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
-    {file = "httpcore-1.0.8-py3-none-any.whl", hash = "sha256:5254cf149bcb5f75e9d1b2b9f729ea4a4b883d1ad7379fc632b727cec23674be"},
-    {file = "httpcore-1.0.8.tar.gz", hash = "sha256:86e94505ed24ea06514883fd44d2bc02d90e77e7979c8eb71b90f41d364a1bad"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
@@ -449,7 +449,7 @@ description = "The next generation HTTP client."
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
@@ -475,7 +475,7 @@ description = "Internationalized Domain Names in Applications (IDNA)"
 optional = true
 python-versions = ">=3.6"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "idna-3.10-py3-none-any.whl", hash = "sha256:946d195a0d259cbba61165e88e65941f16e9b36ea6ddb97f00452bae8b1287d3"},
    {file = "idna-3.10.tar.gz", hash = "sha256:12f65c9b470abda6dc35cf8e63cc574b1c52b11df2c86030af0ac09b01b13ea9"},
@@ -503,7 +503,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -519,7 +519,7 @@ description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = true
 python-versions = ">=3.7"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -532,7 +532,7 @@ description = "A high-performance JSON Schema validator for Python"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "jsonschema_rs-0.29.1-cp310-cp310-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:7d84c4e1483a103694150b5706d638606443c814662738f14d34ca16948349df"},
    {file = "jsonschema_rs-0.29.1-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:0e7b72365ae0875c0e99f951ad4cec00c6f5e57b25ed5b8495b8f2c810ad21a6"},
@@ -590,7 +590,7 @@ description = "Building applications with LLMs through composability"
 optional = true
 python-versions = "<4.0,>=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langchain_core-0.3.55-py3-none-any.whl", hash = "sha256:b3cb36bf37755a616158a79866657c6697b43a2f7c69dd723ce425f1c76c1baa"},
    {file = "langchain_core-0.3.55.tar.gz", hash = "sha256:0f2b3e311621116a83510c70b0ac9d959030a0a457a69483535cff18501fedc9"},
@@ -615,7 +615,7 @@ description = "Building stateful, multi-actor applications with LLMs"
 optional = true
 python-versions = "<4.0,>=3.9.0"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langgraph-0.3.31-py3-none-any.whl", hash = "sha256:f42a6850d03696f2a54d3c833db39aa201cfda78217846a5b8936ad95fe41e6c"},
    {file = "langgraph-0.3.31.tar.gz", hash = "sha256:c76bbc8f26604929d6c2520d937b5602d5bb1dde2c0580398d015f7f6841f14c"},
@@ -635,7 +635,7 @@ description = ""
 optional = true
 python-versions = "<4.0,>=3.11.0"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langgraph_api-0.1.12-py3-none-any.whl", hash = "sha256:0f9417052ac75f6da892902083b7cf6a515bee12dd035cfbc3f0ddb813738830"},
    {file = "langgraph_api-0.1.12.tar.gz", hash = "sha256:1646a904121a5dc84cece6a81b9c49693ccfbd6f1a2904e0ed7aa7eb711e64fc"},
@@ -667,7 +667,7 @@ description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = true
 python-versions = "<4.0.0,>=3.9.0"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langgraph_checkpoint-2.0.24-py3-none-any.whl", hash = "sha256:3836e2909ef2387d1fa8d04ee3e2a353f980d519fd6c649af352676dc73d66b8"},
    {file = "langgraph_checkpoint-2.0.24.tar.gz", hash = "sha256:9596dad332344e7e871257be464df8a07c2e9bac66143081b11b9422b0167e5b"},
@@ -684,7 +684,7 @@ description = "Library with high-level APIs for creating and executing LangGraph
 optional = true
 python-versions = "<4.0.0,>=3.9.0"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langgraph_prebuilt-0.1.8-py3-none-any.whl", hash = "sha256:ae97b828ae00be2cefec503423aa782e1bff165e9b94592e224da132f2526968"},
    {file = "langgraph_prebuilt-0.1.8.tar.gz", hash = "sha256:4de7659151829b2b955b6798df6800e580e617782c15c2c5b29b139697491831"},
@@ -701,7 +701,7 @@ description = "Inmem implementation for the LangGraph API server."
 optional = true
 python-versions = "<4.0,>=3.11.0"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langgraph_runtime_inmem-0.0.4-py3-none-any.whl", hash = "sha256:6793e4c93039bfe522908b5990b318b1db347ab82c274f38fa8b826f21e9f9cf"},
    {file = "langgraph_runtime_inmem-0.0.4.tar.gz", hash = "sha256:15757ce7412ba503cd169e4c1946d0703e7c71d4951d578b2ae592a8a71ab039"},
@@ -717,7 +717,7 @@ description = "SDK for interacting with LangGraph API"
 optional = true
 python-versions = "<4.0.0,>=3.9.0"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "langgraph_sdk-0.1.63-py3-none-any.whl", hash = "sha256:6fb78a7fc6a30eea43bd0d6401dbc9e3263d0d4c03f63c04035980da7e586b05"},
    {file = "langgraph_sdk-0.1.63.tar.gz", hash = "sha256:62bf2cc31e5aa6c5b9011ee1702bcf1e36e67e142a60bd97af2611162fb58e18"},
@@ -734,7 +734,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = true
 python-versions = "<4.0,>=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "langsmith-0.3.33-py3-none-any.whl", hash = "sha256:6fa453942014945e1de7e283880ed3e8031b5d84e0dc75b87d101ecedb62371b"},
    {file = "langsmith-0.3.33.tar.gz", hash = "sha256:0f439e945528c6d14140137b918cc048aea04c6a987525926dbfda2560002924"},
@@ -884,7 +884,7 @@ description = "Fast, correct Python JSON library supporting dataclasses, datetim
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "orjson-3.10.16-cp310-cp310-macosx_10_15_x86_64.macosx_11_0_arm64.macosx_10_15_universal2.whl", hash = "sha256:4cb473b8e79154fa778fb56d2d73763d977be3dcc140587e07dbc545bbfc38f8"},
    {file = "orjson-3.10.16-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:622a8e85eeec1948690409a19ca1c7d9fd8ff116f4861d261e6ae2094fe59a00"},
@@ -963,7 +963,7 @@ description = "Fast, correct Python msgpack library supporting dataclasses, date
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "ormsgpack-1.9.1-cp310-cp310-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:f1f804fd9c0fd84213a6022c34172f82323b34afa7052a4af18797582cf56365"},
    {file = "ormsgpack-1.9.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:eab5cec99c46276b37071d570aab98603f3d0309b3818da3247eb64bb95e5cfc"},
@@ -1019,7 +1019,7 @@ files = [
    {file = "packaging-24.2-py3-none-any.whl", hash = "sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759"},
    {file = "packaging-24.2.tar.gz", hash = "sha256:c228a6dc5e932d346bc5739379109d49e8853dd8223571c7c5b55260edc0b97f"},
 ]
-markers = {main = "python_version >= \"3.11\" and extra == \"inmem\""}
+markers = {main = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""}

 [[package]]
 name = "pluggy"
@@ -1044,7 +1044,7 @@ description = "C parser in Python"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "pycparser-2.22-py3-none-any.whl", hash = "sha256:c3702b6d3dd8c7abc1afa565d7e63d53a1d0bd86cdc24edd75470f4de499cfcc"},
    {file = "pycparser-2.22.tar.gz", hash = "sha256:491c8be9c040f5390f5bf44a5b07752bd07f56edf992381b05c701439eec10f6"},
@@ -1057,7 +1057,7 @@ description = "Data validation using Python type hints"
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and extra == \"inmem\" and python_version < \"4.0\""
 files = [
    {file = "pydantic-2.11.3-py3-none-any.whl", hash = "sha256:a082753436a07f9ba1289c6ffa01cd93db3548776088aa917cc43b63f68fa60f"},
    {file = "pydantic-2.11.3.tar.gz", hash = "sha256:7471657138c16adad9322fe3070c0116dd6c3ad8d649300e3cbdfe91f4db4ec3"},
@@ -1080,7 +1080,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and extra == \"inmem\" and python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.33.1-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:3077cfdb6125cc8dab61b155fdd714663e401f0e6883f9632118ec12cf42df26"},
    {file = "pydantic_core-2.33.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8ffab8b2908d152e74862d276cf5017c81a2f3719f14e8e3e8d6b83fda863927"},
@@ -1193,7 +1193,7 @@ description = "JSON Web Token implementation in Python"
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "PyJWT-2.10.1-py3-none-any.whl", hash = "sha256:dcdd193e30abefd5debf142f9adfcdd2b58004e644f25406ffaebd50bd98dacb"},
    {file = "pyjwt-2.10.1.tar.gz", hash = "sha256:3cc5772eb20009233caf06e9d8a0577824723b44e6648ee0a2aedb6cf9381953"},
@@ -1305,7 +1305,7 @@ description = "YAML parser and emitter for Python"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:0a9a2848a5b7feac301353437eb7d5957887edbf81d56e903999a75a3d743086"},
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:29717114e51c84ddfba879543fb232a6ed60086602313ca38cce623c1d62cfbf"},
@@ -1369,7 +1369,7 @@ description = "Python HTTP for Humans."
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -1392,7 +1392,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -1436,7 +1436,7 @@ description = "Sniff out which async library your code is running under"
 optional = true
 python-versions = ">=3.7"
 groups = ["main"]
-markers = "python_version >= \"3.11\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\""
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -1449,7 +1449,7 @@ description = "SSE plugin for Starlette"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "sse_starlette-2.1.3-py3-none-any.whl", hash = "sha256:8ec846438b4665b9e8c560fcdea6bc8081a3abf7942faa95e5a744999d219772"},
    {file = "sse_starlette-2.1.3.tar.gz", hash = "sha256:9cd27eb35319e1414e3d2558ee7414487f9529ce3b3cf9b21434fd110e017169"},
@@ -1470,7 +1470,7 @@ description = "The little ASGI library that shines."
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "starlette-0.46.2-py3-none-any.whl", hash = "sha256:595633ce89f8ffa71a015caed34a5b2dc1c0cdb3f0f1fbd1e69339cf2abeec35"},
    {file = "starlette-0.46.2.tar.gz", hash = "sha256:7f7361f34eed179294600af672f565727419830b54b7b084efe44bb82d2fccd5"},
@@ -1489,7 +1489,7 @@ description = "Structured Logging for Python"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "structlog-25.2.0-py3-none-any.whl", hash = "sha256:0fecea2e345d5d491b72f3db2e5fcd6393abfc8cd06a4851f21fcd4d1a99f437"},
    {file = "structlog-25.2.0.tar.gz", hash = "sha256:d9f9776944207d1035b8b26072b9b140c63702fd7aa57c2f85d28ab701bd8e92"},
@@ -1508,7 +1508,7 @@ description = "Retry code until it succeeds"
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "tenacity-9.1.2-py3-none-any.whl", hash = "sha256:f77bf36710d8b73a50b2dd155c97b870017ad21afe6ab300326b0371b3b05138"},
    {file = "tenacity-9.1.2.tar.gz", hash = "sha256:1169d376c297e7de388d18b4481760d478b0e99a777cad3a9c86e556f4b697cb"},
@@ -1572,7 +1572,7 @@ files = [
    {file = "typing_extensions-4.13.2-py3-none-any.whl", hash = "sha256:a439e7c04b49fec3e5d3e2beaa21755cadbbdc391694e28ccdd36ca4a1408f8c"},
    {file = "typing_extensions-4.13.2.tar.gz", hash = "sha256:e6c81219bd689f51865d9e372991c540bda33a0379d5573cddb9a3a23f7caaef"},
 ]
-markers = {main = "python_version >= \"3.11\" and (python_version < \"3.13\" or extra == \"inmem\")"}
+markers = {main = "python_version >= \"3.11\" and python_version < \"4.0\" and (python_version < \"3.13\" or extra == \"inmem\")"}

 [[package]]
 name = "typing-inspection"
@@ -1581,7 +1581,7 @@ description = "Runtime typing introspection tools"
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and extra == \"inmem\" and python_version < \"4.0\""
 files = [
    {file = "typing_inspection-0.4.0-py3-none-any.whl", hash = "sha256:50e72559fcd2a6367a19f7a7e610e6afcb9fac940c650290eed893d61386832f"},
    {file = "typing_inspection-0.4.0.tar.gz", hash = "sha256:9765c87de36671694a67904bf2c96e395be9c6439bb6c87b5142569dcdd65122"},
@@ -1597,7 +1597,7 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "urllib3-2.4.0-py3-none-any.whl", hash = "sha256:4e16665048960a0900c702d4a66415956a584919c03361cac9f1df5c5dd7e813"},
    {file = "urllib3-2.4.0.tar.gz", hash = "sha256:414bc6535b787febd7567804cc015fee39daab8ad86268f1310a9250697de466"},
@@ -1616,7 +1616,7 @@ description = "The lightning-fast ASGI server."
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "uvicorn-0.34.2-py3-none-any.whl", hash = "sha256:deb49af569084536d269fe0a6d67e3754f104cf03aba7c11c40f01aadf33c403"},
    {file = "uvicorn-0.34.2.tar.gz", hash = "sha256:0e929828f6186353a80b58ea719861d2629d766293b6d19baf086ba31d4f3328"},
@@ -1679,7 +1679,7 @@ description = "Simple, modern and high performance file watching and code reload
 optional = true
 python-versions = ">=3.9"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "watchfiles-1.0.5-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:5c40fe7dd9e5f81e0847b1ea64e1f5dd79dd61afbedb57759df06767ac719b40"},
    {file = "watchfiles-1.0.5-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8c0db396e6003d99bb2d7232c957b5f0b5634bbd1b24e381a5afcc880f7373fb"},
@@ -1764,7 +1764,7 @@ description = "Python binding for xxHash"
 optional = true
 python-versions = ">=3.7"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "xxhash-3.5.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:ece616532c499ee9afbb83078b1b952beffef121d989841f7f4b3dc5ac0fd212"},
    {file = "xxhash-3.5.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:3171f693dbc2cef6477054a665dc255d996646b4023fe56cb4db80e26f4cc520"},
@@ -1898,7 +1898,7 @@ description = "Zstandard bindings for Python"
 optional = true
 python-versions = ">=3.8"
 groups = ["main"]
-markers = "python_version >= \"3.11\" and extra == \"inmem\""
+markers = "python_version >= \"3.11\" and python_version < \"4.0\" and extra == \"inmem\""
 files = [
    {file = "zstandard-0.23.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bf0a05b6059c0528477fba9054d09179beb63744355cab9f38059548fedd46a9"},
    {file = "zstandard-0.23.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:fc9ca1c9718cb3b06634c7c8dec57d24e9438b2aa9a0f02b8bb36bf478538880"},
@@ -2010,5 +2010,5 @@ inmem = ["langgraph-api", "langgraph-runtime-inmem", "python-dotenv"]

 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9.0,<4.0"
-content-hash = "6f3f275ae70749922db5bd1105711fbb0f8ac3b215982f7c75861c93d956e95d"
+python-versions = ">=3.9"
+content-hash = "d8faf1561b3a3a79be838303c07f8089215033eb41674cc13a39251ebfdc4214"
@@ -12,7 +12,7 @@ packages = [{ include = "langgraph_cli" }]
 langgraph = "langgraph_cli.cli:cli"

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
+python = ">=3.9"
 click = "^8.1.7"
 langgraph-api = { version = ">=0.1.12,<0.2.0", optional = true, python = ">=3.11,<4.0" }
 langgraph-runtime-inmem = { version = ">=0.0.1,<0.1.0", optional = true, python = ">=3.11,<4.0" }
@@ -399,6 +399,17 @@
          "type": "string",
          "description": "Optional. Import path to a custom Starlette/FastAPI application to mount.\n"
        },
+        "configurable_headers": {
+          "anyOf": [
+            {
+              "$ref": "#/$defs/ConfigurableHeaderConfig"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Optional. Defines how headers are treated for a run's configuration.\n\nYou can include or exclude headers as configurable values to condition your\nagent's behavior or permissions on a request's headers."
+        },
        "cors": {
          "anyOf": [
            {
@@ -433,6 +444,45 @@
      },
      "required": []
    },
+    "ConfigurableHeaderConfig": {
+      "title": "ConfigurableHeaderConfig",
+      "description": "Customize which headers to include as configurable values in your runs.\n\nBy default, omits x-api-key, x-tenant-id, and x-service-key.\n\nExclusions (if provided) take precedence.\n\nEach value can be a raw string with an optional wildcard.",
+      "type": "object",
+      "properties": {
+        "excludes": {
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Headers to exclude. Applied before the 'includes' checks.\n"
+        },
+        "includes": {
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Headers to include (if not also matches against an 'exludes' pattern.\n"
+        }
+      },
+      "required": [
+        "excludes",
+        "includes"
+      ]
+    },
    "CorsConfig": {
      "title": "CorsConfig",
      "description": "Specifies Cross-Origin Resource Sharing (CORS) rules for your server.\n\nIf omitted, defaults are typically very restrictive (often no cross-origin requests).\nConfigure carefully if you want to allow usage from browsers hosted on other domains.",
@@ -399,6 +399,17 @@
          "type": "string",
          "description": "Optional. Import path to a custom Starlette/FastAPI application to mount.\n"
        },
+        "configurable_headers": {
+          "anyOf": [
+            {
+              "$ref": "#/$defs/ConfigurableHeaderConfig"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Optional. Defines how headers are treated for a run's configuration.\n\nYou can include or exclude headers as configurable values to condition your\nagent's behavior or permissions on a request's headers."
+        },
        "cors": {
          "anyOf": [
            {
@@ -433,6 +444,45 @@
      },
      "required": []
    },
+    "ConfigurableHeaderConfig": {
+      "title": "ConfigurableHeaderConfig",
+      "description": "Customize which headers to include as configurable values in your runs.\n\nBy default, omits x-api-key, x-tenant-id, and x-service-key.\n\nExclusions (if provided) take precedence.\n\nEach value can be a raw string with an optional wildcard.",
+      "type": "object",
+      "properties": {
+        "excludes": {
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Headers to exclude. Applied before the 'includes' checks.\n"
+        },
+        "includes": {
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "string"
+              }
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "description": "Headers to include (if not also matches against an 'exludes' pattern.\n"
+        }
+      },
+      "required": [
+        "excludes",
+        "includes"
+      ]
+    },
    "CorsConfig": {
      "title": "CorsConfig",
      "description": "Specifies Cross-Origin Resource Sharing (CORS) rules for your server.\n\nIf omitted, defaults are typically very restrictive (often no cross-origin requests).\nConfigure carefully if you want to allow usage from browsers hosted on other domains.",
@@ -102,6 +102,8 @@ CONF = cast(Literal["configurable"], sys.intern("configurable"))
 # key for the configurable dict in RunnableConfig
 NULL_TASK_ID = sys.intern("00000000-0000-0000-0000-000000000000")
 # the task_id to use for writes that are not associated with a task
+CONFIG_KEY_RESUME_MAP = sys.intern("__pregel_resume_map")
+# holds a mapping of task ns -> resume value for resuming tasks

 RESERVED = {
    TAG_HIDDEN,
@@ -34,7 +34,7 @@ from langgraph.utils.runnable import (
 )

 Writer = Callable[
-    [Sequence[Union[str, Send]]],
+    [Sequence[Union[str, Send]], bool],
    Sequence[Union[ChannelWriteEntry, Send]],
 ]

@@ -142,8 +142,8 @@ class Branch(NamedTuple):
            ),
            list(
                zip_longest(
-                    writer([e for e in self.ends.values() if e != END]),
-                    [str(la) for la, e in self.ends.items() if e != END],
+                    writer([e for e in self.ends.values()], True),
+                    [str(la) for la, e in self.ends.items()],
                )
            )
            if self.ends
@@ -215,7 +215,7 @@ class Branch(NamedTuple):
            raise ValueError("Branch did not return a valid destination")
        if any(p.node == END for p in destinations if isinstance(p, Send)):
            raise InvalidUpdateError("Cannot send a packet to the END node")
-        entries = writer(destinations)
+        entries = writer(destinations, False)
        if not entries:
            return input
        else:
@@ -374,7 +374,7 @@ class CompiledGraph(Pregel):

    def attach_branch(self, start: str, name: str, branch: Branch) -> None:
        def get_writes(
-            packets: Sequence[Union[str, Send]],
+            packets: Sequence[Union[str, Send]], static: bool = False
        ) -> Sequence[Union[ChannelWriteEntry, Send]]:
            return [
                (
@@ -843,31 +843,31 @@ class CompiledStateGraph(CompiledGraph):
        self, start: str, name: str, branch: Branch, *, with_reader: bool = True
    ) -> None:
        def get_writes(
-            packets: Sequence[Union[str, Send]],
+            packets: Sequence[Union[str, Send]], static: bool = False
        ) -> Sequence[Union[ChannelWriteEntry, Send]]:
-            if filtered := [p for p in packets if p != END]:
-                writes = [
-                    (
-                        ChannelWriteEntry(CHANNEL_BRANCH_TO.format(p), None)
-                        if not isinstance(p, Send)
-                        else p
+            writes = [
+                (
+                    ChannelWriteEntry(CHANNEL_BRANCH_TO.format(p), None)
+                    if not isinstance(p, Send)
+                    else p
+                )
+                for p in packets
+                if (True if static else p != END)
+            ]
+            if not writes:
+                return []
+            if branch.then and branch.then != END:
+                writes.append(
+                    ChannelWriteEntry(
+                        f"branch:{start}:{name}::then",
+                        WaitForNames(
+                            frozenset(
+                                p.node if isinstance(p, Send) else p for p in packets
+                            )
+                        ),
                    )
-                    for p in filtered
-                ]
-                if branch.then and branch.then != END:
-                    writes.append(
-                        ChannelWriteEntry(
-                            f"branch:{start}:{name}::then",
-                            WaitForNames(
-                                frozenset(
-                                    p.node if isinstance(p, Send) else p
-                                    for p in filtered
-                                )
-                            ),
-                        )
-                    )
-                return writes
-            return []
+                )
+            return writes

        if with_reader:
            # get schema
@@ -1067,13 +1067,9 @@ def _control_static(
    ends: Union[tuple[str, ...], dict[str, str]],
 ) -> Sequence[tuple[str, Any, Optional[str]]]:
    if isinstance(ends, dict):
-        return [
-            (CHANNEL_BRANCH_TO.format(k), None, label)
-            for k, label in ends.items()
-            if k != END
-        ]
+        return [(CHANNEL_BRANCH_TO.format(k), None, label) for k, label in ends.items()]
    else:
-        return [(CHANNEL_BRANCH_TO.format(e), None, None) for e in ends if e != END]
+        return [(CHANNEL_BRANCH_TO.format(e), None, None) for e in ends]


 def _get_root(input: Any) -> Optional[Sequence[tuple[str, Any]]]:
@@ -103,6 +103,7 @@ from langgraph.store.base import BaseStore
 from langgraph.types import (
    All,
    Checkpointer,
+    Interrupt,
    LoopProtocol,
    StateSnapshot,
    StateUpdate,
@@ -852,6 +853,7 @@ class Pregel(PregelProtocol):
                created_at=None,
                parent_config=None,
                tasks=(),
+                interrupts=(),
            )

        # migrate checkpoint if needed
@@ -936,6 +938,12 @@ class Pregel(PregelProtocol):
                    next_tasks[tid].writes.append((k, v))
                if tasks := [t for t in next_tasks.values() if t.writes]:
                    apply_writes(saved.checkpoint, channels, tasks, None)
+            tasks_with_writes = tasks_w_writes(
+                next_tasks.values(),
+                saved.pending_writes,
+                task_states,
+                self.stream_channels_asis,
+            )
            # assemble the state snapshot
            return StateSnapshot(
                read_channels(channels, self.stream_channels_asis),
@@ -944,12 +952,8 @@ class Pregel(PregelProtocol):
                saved.metadata,
                saved.checkpoint["ts"],
                patch_checkpoint_map(saved.parent_config, saved.metadata),
-                tasks_w_writes(
-                    next_tasks.values(),
-                    saved.pending_writes,
-                    task_states,
-                    self.stream_channels_asis,
-                ),
+                tasks_with_writes,
+                tuple([i for task in tasks_with_writes for i in task.interrupts]),
            )

    async def _aprepare_state_snapshot(
@@ -968,6 +972,7 @@ class Pregel(PregelProtocol):
                created_at=None,
                parent_config=None,
                tasks=(),
+                interrupts=(),
            )

        # migrate checkpoint if needed
@@ -1055,6 +1060,13 @@ class Pregel(PregelProtocol):
                    next_tasks[tid].writes.append((k, v))
                if tasks := [t for t in next_tasks.values() if t.writes]:
                    apply_writes(saved.checkpoint, channels, tasks, None)
+
+            tasks_with_writes = tasks_w_writes(
+                next_tasks.values(),
+                saved.pending_writes,
+                task_states,
+                self.stream_channels_asis,
+            )
            # assemble the state snapshot
            return StateSnapshot(
                read_channels(channels, self.stream_channels_asis),
@@ -1063,12 +1075,8 @@ class Pregel(PregelProtocol):
                saved.metadata,
                saved.checkpoint["ts"],
                patch_checkpoint_map(saved.parent_config, saved.metadata),
-                tasks_w_writes(
-                    next_tasks.values(),
-                    saved.pending_writes,
-                    task_states,
-                    self.stream_channels_asis,
-                ),
+                tasks_with_writes,
+                tuple([i for task in tasks_with_writes for i in task.interrupts]),
            )

    def get_state(
@@ -2191,7 +2199,7 @@ class Pregel(PregelProtocol):
            stream_mode: The mode to stream output, defaults to self.stream_mode.
                Options are:

-                - `"values"`: Emit all values in the state after each step.
+                - `"values"`: Emit all values in the state after each step, including interrupts.
                    When used with functional API, values are emitted once at the end of the workflow.
                - `"updates"`: Emit only the node or task names and updates returned by the nodes or tasks after each step.
                    If multiple updates are made in the same step (e.g. multiple nodes are run) then those updates are emitted separately.
@@ -2478,7 +2486,7 @@ class Pregel(PregelProtocol):
            stream_mode: The mode to stream output, defaults to self.stream_mode.
                Options are:

-                - `"values"`: Emit all values in the state after each step.
+                - `"values"`: Emit all values in the state after each step, including interrupts.
                    When used with functional API, values are emitted once at the end of the workflow.
                - `"updates"`: Emit only the node or task names and updates returned by the nodes or tasks after each step.
                    If multiple updates are made in the same step (e.g. multiple nodes are run) then those updates are emitted separately.
@@ -2788,10 +2796,11 @@ class Pregel(PregelProtocol):
            If stream_mode is not "values", it returns a list of output chunks.
        """
        output_keys = output_keys if output_keys is not None else self.output_channels
-        if stream_mode == "values":
-            latest: dict[str, Any] | Any = None
-        else:
-            chunks = []
+
+        latest: Union[dict[str, Any], Any] = None
+        chunks: list[Union[dict[str, Any], Any]] = []
+        interrupts: list[Interrupt] = []
+
        for chunk in self.stream(
            input,
            config,
@@ -2804,10 +2813,23 @@ class Pregel(PregelProtocol):
            **kwargs,
        ):
            if stream_mode == "values":
-                latest = chunk
+                if (
+                    isinstance(chunk, dict)
+                    and (ints := chunk.get(INTERRUPT)) is not None
+                ):
+                    interrupts.extend(ints)
+                else:
+                    latest = chunk
            else:
                chunks.append(chunk)
+
        if stream_mode == "values":
+            if interrupts:
+                return (
+                    {**latest, INTERRUPT: interrupts}
+                    if isinstance(latest, dict)
+                    else {INTERRUPT: interrupts}
+                )
            return latest
        else:
            return chunks
@@ -2843,10 +2865,11 @@ class Pregel(PregelProtocol):
        """

        output_keys = output_keys if output_keys is not None else self.output_channels
-        if stream_mode == "values":
-            latest: dict[str, Any] | Any = None
-        else:
-            chunks = []
+
+        latest: Union[dict[str, Any], Any] = None
+        chunks: list[Union[dict[str, Any], Any]] = []
+        interrupts: list[Interrupt] = []
+
        async for chunk in self.astream(
            input,
            config,
@@ -2859,10 +2882,23 @@ class Pregel(PregelProtocol):
            **kwargs,
        ):
            if stream_mode == "values":
-                latest = chunk
+                if (
+                    isinstance(chunk, dict)
+                    and (ints := chunk.get(INTERRUPT)) is not None
+                ):
+                    interrupts.extend(ints)
+                else:
+                    latest = chunk
            else:
                chunks.append(chunk)
+
        if stream_mode == "values":
+            if interrupts:
+                return (
+                    {**latest, INTERRUPT: interrupts}
+                    if isinstance(latest, dict)
+                    else {INTERRUPT: interrupts}
+                )
            return latest
        else:
            return chunks
@@ -40,6 +40,7 @@ from langgraph.constants import (
    CONFIG_KEY_CHECKPOINTER,
    CONFIG_KEY_PREVIOUS,
    CONFIG_KEY_READ,
+    CONFIG_KEY_RESUME_MAP,
    CONFIG_KEY_SCRATCHPAD,
    CONFIG_KEY_SEND,
    CONFIG_KEY_STORE,
@@ -542,11 +543,14 @@ def prepare_single_task(
            str(task_path[2]),
        )
        task_checkpoint_ns = f"{checkpoint_ns}:{task_id}"
+        # we append True to the task path to indicate that a call is being
+        # made, so we should not return interrupts from this task (responsibility lies with the parent)
+        task_path = (*task_path[:3], True)
        metadata = {
            "langgraph_step": step,
            "langgraph_node": name,
            "langgraph_triggers": triggers,
-            "langgraph_path": task_path[:3],
+            "langgraph_path": task_path,
            "langgraph_checkpoint_ns": task_checkpoint_ns,
        }
        if task_id_checksum is not None:
@@ -575,7 +579,7 @@ def prepare_single_task(
                            local_read,
                            channels,
                            managed,
-                            PregelTaskWrites(task_path[:3], name, writes, triggers),
+                            PregelTaskWrites(task_path, name, writes, triggers),
                        ),
                        CONFIG_KEY_STORE: (store or configurable.get(CONFIG_KEY_STORE)),
                        CONFIG_KEY_CHECKPOINTER: (
@@ -591,6 +595,8 @@ def prepare_single_task(
                            config[CONF].get(CONFIG_KEY_SCRATCHPAD),
                            pending_writes,
                            task_id,
+                            xxh3_128_hexdigest(task_checkpoint_ns.encode()),
+                            config[CONF].get(CONFIG_KEY_RESUME_MAP),
                        ),
                    },
                ),
@@ -598,10 +604,10 @@ def prepare_single_task(
                call.retry,
                None,
                task_id,
-                task_path[:3],
+                task_path,
            )
        else:
-            return PregelTask(task_id, name, task_path[:3])
+            return PregelTask(task_id, name, task_path)
    elif task_path[0] == PUSH:
        if len(task_path) == 2:
            # SEND tasks, executed in superstep n+1
@@ -637,11 +643,14 @@ def prepare_single_task(
            logger.warning(f"Ignoring invalid PUSH task path {task_path}")
            return
        task_checkpoint_ns = f"{checkpoint_ns}:{task_id}"
+        # we append False to the task path to indicate that a call is not being made
+        # so we should return interrupts from this task
+        task_path = (*task_path[:3], False)
        metadata = {
            "langgraph_step": step,
            "langgraph_node": packet.node,
            "langgraph_triggers": triggers,
-            "langgraph_path": task_path[:3],
+            "langgraph_path": task_path,
            "langgraph_checkpoint_ns": task_checkpoint_ns,
        }
        if task_id_checksum is not None:
@@ -678,7 +687,7 @@ def prepare_single_task(
                                channels,
                                managed,
                                PregelTaskWrites(
-                                    task_path[:3], packet.node, writes, triggers
+                                    task_path, packet.node, writes, triggers
                                ),
                            ),
                            CONFIG_KEY_STORE: (
@@ -698,6 +707,8 @@ def prepare_single_task(
                                config[CONF].get(CONFIG_KEY_SCRATCHPAD),
                                pending_writes,
                                task_id,
+                                xxh3_128_hexdigest(task_checkpoint_ns.encode()),
+                                config[CONF].get(CONFIG_KEY_RESUME_MAP),
                            ),
                            CONFIG_KEY_PREVIOUS: checkpoint["channel_values"].get(
                                PREVIOUS, None
@@ -708,12 +719,12 @@ def prepare_single_task(
                    proc.retry_policy,
                    None,
                    task_id,
-                    task_path[:3],
+                    task_path,
                    writers=proc.flat_writers,
                    subgraphs=proc.subgraphs,
                )
        else:
-            return PregelTask(task_id, packet.node, task_path[:3])
+            return PregelTask(task_id, packet.node, task_path)
    elif task_path[0] == PULL:
        # (PULL, node name)
        name = cast(str, task_path[1])
@@ -824,6 +835,8 @@ def prepare_single_task(
                                    config[CONF].get(CONFIG_KEY_SCRATCHPAD),
                                    pending_writes,
                                    task_id,
+                                    xxh3_128_hexdigest(task_checkpoint_ns.encode()),
+                                    config[CONF].get(CONFIG_KEY_RESUME_MAP),
                                ),
                                CONFIG_KEY_PREVIOUS: checkpoint["channel_values"].get(
                                    PREVIOUS, None
@@ -875,6 +888,8 @@ def _scratchpad(
    parent_scratchpad: Optional[PregelScratchpad],
    pending_writes: list[PendingWrite],
    task_id: str,
+    namespace_hash: str,
+    resume_map: Optional[dict[str, Any]],
 ) -> PregelScratchpad:
    if len(pending_writes) > 0:
        # find global resume value
@@ -886,6 +901,7 @@ def _scratchpad(
            # None cannot be used as a resume value, because it would be difficult to
            # distinguish from missing when used over http
            null_resume_write = None
+
        # find task-specific resume value
        for w in pending_writes:
            if w[0] == task_id and w[1] == RESUME:
@@ -895,8 +911,13 @@ def _scratchpad(
                break
        else:
            task_resume_write = []
-        # clear var
        del w
+
+        # find namespace and task-specific resume value
+        if resume_map and namespace_hash in resume_map:
+            mapped_resume_write = resume_map[namespace_hash]
+            task_resume_write.append(mapped_resume_write)
+
    else:
        null_resume_write = None
        task_resume_write = []
@@ -110,6 +110,11 @@ def draw_graph(
                        static_seen.add(w)
                        # apply static writes
                        if writes := ChannelWrite.get_static_writes(w):
+                            # END writes are not written, but become edges directly
+                            for t in writes:
+                                if t[0] == END:
+                                    edges.add((task.name, t[0], True, t[2]))
+                            writes = [t for t in writes if t[0] != END]
                            conditionals.update(
                                {(task.name, *t[:2]): t[2] for t in writes}
                            )
@@ -175,31 +180,36 @@ def draw_graph(
        if START not in nodes:
            graph.add_node(None, START)
            for task in start_tasks.values():
-                graph.add_edge(graph.nodes[START], graph.nodes[task.name])
+                add_edge(graph, START, task.name)
        # add discovered edges
        for src, dest, is_conditional, label in sorted(edges):
-            graph.add_edge(
-                graph.nodes[src],
-                graph.nodes[dest],
+            add_edge(
+                graph,
+                src,
+                dest,
                data=label if label != dest else None,
                conditional=is_conditional,
            )
        # add end edges
-        if step_sources:
-            end = graph.add_node(None, END)
-            termini = {d for _, d, _, _ in edges}.difference(s for s, _, _, _ in edges)
-            for src in sorted(termini.union(step_sources)):
-                graph.add_edge(graph.nodes[src], end, conditional=src not in termini)
+        termini = {d for _, d, _, _ in edges if d != END}.difference(
+            s for s, _, _, _ in edges
+        )
+        if termini:
+            for src in sorted(termini):
+                add_edge(graph, src, END)
+        elif len(step_sources) == 1:
+            for src in sorted(step_sources):
+                add_edge(graph, src, END, conditional=True)
        # replace subgraphs
        for name, subgraph in subgraphs.items():
-            subgraph.trim_first_node()
-            subgraph.trim_last_node()
            if (
                len(subgraph.nodes) > 1
                and name in graph.nodes
                and subgraph.first_node()
                and subgraph.last_node()
            ):
+                subgraph.trim_first_node()
+                subgraph.trim_last_node()
                # replace the node with the subgraph
                graph.nodes.pop(name)
                first, last = graph.extend(subgraph, prefix=name)
@@ -210,3 +220,20 @@ def draw_graph(
                        graph.edges[idx] = edge.copy(target=cast(Node, first).id)

        return graph
+
+
+def add_edge(
+    graph: Graph,
+    source: str,
+    target: str,
+    *,
+    data: Optional[Any] = None,
+    conditional: bool = False,
+) -> None:
+    """Add an edge to the graph."""
+    for edge in graph.edges:
+        if edge.source == source and edge.target == target:
+            return
+    if target not in graph.nodes and target == END:
+        graph.add_node(None, END)
+    graph.add_edge(graph.nodes[source], graph.nodes[target], data, conditional)
@@ -1,12 +1,10 @@
 from collections import Counter
 from collections.abc import Iterator, Mapping, Sequence
 from typing import Any, Literal, Optional, TypeVar, Union
-from uuid import UUID

 from langchain_core.runnables.utils import AddableDict

 from langgraph.channels.base import BaseChannel, EmptyChannelError
-from langgraph.checkpoint.base import PendingWrite
 from langgraph.constants import (
    EMPTY_SEQ,
    ERROR,
@@ -24,15 +22,6 @@ from langgraph.pregel.log import logger
 from langgraph.types import Command, PregelExecutableTask, Send


-def is_task_id(task_id: str) -> bool:
-    """Check if a string is a valid task id."""
-    try:
-        UUID(task_id)
-    except Exception:
-        return False
-    return True
-
-
 def read_channel(
    channels: Mapping[str, BaseChannel],
    chan: str,
@@ -66,9 +55,7 @@ def read_channels(
        return values


-def map_command(
-    cmd: Command, pending_writes: list[PendingWrite]
-) -> Iterator[tuple[str, str, Any]]:
+def map_command(cmd: Command) -> Iterator[tuple[str, str, Any]]:
    """Map input chunk to a sequence of pending writes in the form (channel, value)."""
    if cmd.graph == Command.PARENT:
        raise InvalidUpdateError("There is no parent graph")
@@ -87,15 +74,7 @@ def map_command(
                    f"In Command.goto, expected Send/str, got {type(send).__name__}"
                )
    if cmd.resume is not None:
-        if isinstance(cmd.resume, dict) and all(is_task_id(k) for k in cmd.resume):
-            for tid, resume in cmd.resume.items():
-                existing: list[Any] = next(
-                    (w[2] for w in pending_writes if w[0] == tid and w[1] == RESUME), []
-                )
-                existing.append(resume)
-                yield (tid, RESUME, existing)
-        else:
-            yield (NULL_TASK_ID, RESUME, cmd.resume)
+        yield (NULL_TASK_ID, RESUME, cmd.resume)
    if cmd.update:
        for k, v in cmd._update_as_tuples():
            yield (NULL_TASK_ID, k, v)
@@ -47,6 +47,7 @@ from langgraph.constants import (
    CONFIG_KEY_DEDUPE_TASKS,
    CONFIG_KEY_DELEGATE,
    CONFIG_KEY_ENSURE_LATEST,
+    CONFIG_KEY_RESUME_MAP,
    CONFIG_KEY_RESUMING,
    CONFIG_KEY_SCRATCHPAD,
    CONFIG_KEY_STREAM,
@@ -112,7 +113,7 @@ from langgraph.pregel.io import (
 )
 from langgraph.pregel.manager import AsyncChannelsManager, ChannelsManager
 from langgraph.pregel.read import PregelNode
-from langgraph.pregel.utils import get_new_channel_versions
+from langgraph.pregel.utils import get_new_channel_versions, is_xxh3_128_hexdigest
 from langgraph.store.base import BaseStore
 from langgraph.types import (
    All,
@@ -649,15 +650,22 @@ class PregelLoop(LoopProtocol):

        # map command to writes
        if isinstance(self.input, Command):
-            if self.input.resume is not None and not self.checkpointer:
+            if resume_is_map := (
+                (resume := self.input.resume) is not None
+                and isinstance(resume, dict)
+                and all(is_xxh3_128_hexdigest(k) for k in resume)
+            ):
+                self.config[CONF][CONFIG_KEY_RESUME_MAP] = self.input.resume
+            if resume is not None and not self.checkpointer:
                raise RuntimeError(
                    "Cannot use Command(resume=...) without checkpointer"
                )
            writes: defaultdict[str, list[tuple[str, Any]]] = defaultdict(list)
            # group writes by task ID
-            for tid, c, v in map_command(self.input, self.checkpoint_pending_writes):
-                writes[tid].append((c, v))
-            if not writes:
+            for tid, c, v in map_command(cmd=self.input):
+                if not (c == RESUME and resume_is_map):
+                    writes[tid].append((c, v))
+            if not writes and not resume_is_map:
                raise EmptyInputError("Received empty Command input")
            # save writes
            for tid, ws in writes.items():
@@ -909,23 +917,26 @@ class PregelLoop(LoopProtocol):
            ):
                return
            if writes[0][0] == INTERRUPT:
-                self._emit(
-                    "updates",
-                    lambda: iter(
-                        [
-                            {
-                                INTERRUPT: tuple(
-                                    v
-                                    for w in writes
-                                    if w[0] == INTERRUPT
-                                    for v in (
-                                        w[1] if isinstance(w[1], Sequence) else (w[1],)
-                                    )
-                                )
-                            }
-                        ]
-                    ),
-                )
+                # in loop.py we append a bool to the PUSH task paths to indicate
+                # whether or not a call was present (that was popped). If so,
+                # we don't emit the interrupt as it'll be emitted by the parent
+                if task.path[0] == PUSH and task.path[-1] is True:
+                    return
+                interrupts = [
+                    {
+                        INTERRUPT: tuple(
+                            v
+                            for w in writes
+                            if w[0] == INTERRUPT
+                            for v in (w[1] if isinstance(w[1], Sequence) else (w[1],))
+                        )
+                    }
+                ]
+                stream_modes = self.stream.modes if self.stream else []
+                if "updates" in stream_modes:
+                    self._emit("updates", lambda: iter(interrupts))
+                elif "values" in stream_modes:
+                    self._emit("values", lambda: iter(interrupts))
            elif writes[0][0] != ERROR:
                self._emit(
                    "updates",
@@ -46,6 +46,34 @@ class StreamMessagesHandler(BaseCallbackHandler, _StreamingCallbackHandler):
            self.seen.add(message.id)
            self.stream((meta[0], "messages", (message, meta[1])))

+    def _find_and_emit_messages(self, meta: Meta, response: Any) -> None:
+        if isinstance(response, BaseMessage):
+            self._emit(meta, response, dedupe=True)
+        elif isinstance(response, Sequence):
+            for value in response:
+                if isinstance(value, BaseMessage):
+                    self._emit(meta, value, dedupe=True)
+        elif isinstance(response, dict):
+            for value in response.values():
+                if isinstance(value, BaseMessage):
+                    self._emit(meta, value, dedupe=True)
+                elif isinstance(value, Sequence):
+                    for item in value:
+                        if isinstance(item, BaseMessage):
+                            self._emit(meta, item, dedupe=True)
+        elif hasattr(response, "__dir__") and callable(response.__dir__):
+            for key in dir(response):
+                try:
+                    value = getattr(response, key)
+                    if isinstance(value, BaseMessage):
+                        self._emit(meta, value, dedupe=True)
+                    elif isinstance(value, Sequence):
+                        for item in value:
+                            if isinstance(item, BaseMessage):
+                                self._emit(meta, item, dedupe=True)
+                except AttributeError:
+                    pass
+
    def tap_output_aiter(
        self, run_id: UUID, output: AsyncIterator[T]
    ) -> AsyncIterator[T]:
@@ -149,43 +177,21 @@ class StreamMessagesHandler(BaseCallbackHandler, _StreamingCallbackHandler):
        **kwargs: Any,
    ) -> Any:
        if meta := self.metadata.pop(run_id, None):
+            # Handle Command node updates
            if isinstance(response, Command):
-                response = response.update
-
-            if isinstance(response, Sequence) and any(
+                self._find_and_emit_messages(meta, response.update)
+            # Handle list of Command updates
+            elif isinstance(response, Sequence) and any(
                isinstance(value, Command) for value in response
            ):
-                response = [
-                    value.update if isinstance(value, Command) else value
-                    for value in response
-                ]
-
-            if isinstance(response, BaseMessage):
-                self._emit(meta, response, dedupe=True)
-            elif isinstance(response, Sequence):
                for value in response:
-                    if isinstance(value, BaseMessage):
-                        self._emit(meta, value, dedupe=True)
-            elif isinstance(response, dict):
-                for value in response.values():
-                    if isinstance(value, BaseMessage):
-                        self._emit(meta, value, dedupe=True)
-                    elif isinstance(value, Sequence):
-                        for item in value:
-                            if isinstance(item, BaseMessage):
-                                self._emit(meta, item, dedupe=True)
-            elif hasattr(response, "__dir__") and callable(response.__dir__):
-                for key in dir(response):
-                    try:
-                        value = getattr(response, key)
-                        if isinstance(value, BaseMessage):
-                            self._emit(meta, value, dedupe=True)
-                        elif isinstance(value, Sequence):
-                            for item in value:
-                                if isinstance(item, BaseMessage):
-                                    self._emit(meta, item, dedupe=True)
-                    except AttributeError:
-                        pass
+                    if isinstance(value, Command):
+                        self._find_and_emit_messages(meta, value.update)
+                    else:
+                        self._find_and_emit_messages(meta, value)
+            # Handle basic updates / streaming
+            else:
+                self._find_and_emit_messages(meta, response)

    def on_chain_error(
        self,
@@ -192,6 +192,10 @@ class PregelNode(Runnable):

    def copy(self, update: dict[str, Any]) -> PregelNode:
        attrs = {**self.__dict__, **update}
+        # Drop the cached properties
+        attrs.pop("flat_writers", None)
+        attrs.pop("node", None)
+        attrs.pop("input_cache_key", None)
        return PregelNode(**attrs)

    @cached_property
@@ -54,6 +54,28 @@ CONF_DROPLIST = frozenset(
 )


+def sanitize_config_value(v: Any) -> Any:
+    """Recursively sanitize a config value to ensure it contains only primitives."""
+    if isinstance(v, (str, int, float, bool)):
+        return v
+    elif isinstance(v, dict):
+        sanitized_dict = {}
+        for k, val in v.items():
+            if isinstance(k, str):
+                sanitized_value = sanitize_config_value(val)
+                if sanitized_value is not None:
+                    sanitized_dict[k] = sanitized_value
+        return sanitized_dict
+    elif isinstance(v, (list, tuple)):
+        sanitized_list = []
+        for item in v:
+            sanitized_item = sanitize_config_value(item)
+            if sanitized_item is not None:
+                sanitized_list.append(sanitized_item)
+        return sanitized_list
+    return None
+
+
 class RemoteException(Exception):
    """Exception raised when an error occurs in the remote graph."""

@@ -219,7 +241,7 @@ class RemoteGraph(PregelProtocol):
        )

    def _create_state_snapshot(self, state: ThreadState) -> StateSnapshot:
-        tasks = []
+        tasks: list[PregelTask] = []
        for task in state["tasks"]:
            interrupts = []
            for interrupt in task["interrupts"]:
@@ -267,6 +289,7 @@ class RemoteGraph(PregelProtocol):
            if state["parent_checkpoint"]
            else None,
            tasks=tuple(tasks),
+            interrupts=tuple([i for task in tasks for i in task.interrupts]),
        )

    def _get_checkpoint(self, config: Optional[RunnableConfig]) -> Optional[Checkpoint]:
@@ -303,20 +326,26 @@ class RemoteGraph(PregelProtocol):
            sanitized["recursion_limit"] = config["recursion_limit"]
        if "tags" in config:
            sanitized["tags"] = [tag for tag in config["tags"] if isinstance(tag, str)]
+
        if "metadata" in config:
            sanitized["metadata"] = {}
            for k, v in config["metadata"].items():
-                if isinstance(k, str) and isinstance(v, (str, int, float, bool)):
-                    sanitized["metadata"][k] = v
+                if (
+                    isinstance(k, str)
+                    and (sanitized_value := sanitize_config_value(v)) is not None
+                ):
+                    sanitized["metadata"][k] = sanitized_value
+
        if "configurable" in config:
            sanitized["configurable"] = {}
            for k, v in config["configurable"].items():
                if (
                    isinstance(k, str)
                    and k not in CONF_DROPLIST
-                    and isinstance(v, (str, int, float, bool))
+                    and (sanitized_value := sanitize_config_value(v)) is not None
                ):
-                    sanitized["configurable"][k] = v
+                    sanitized["configurable"][k] = sanitized_value
+
        return sanitized

    def get_state(
@@ -1,5 +1,6 @@
 import ast
 import inspect
+import re
 import textwrap
 from typing import Any, Callable, Optional

@@ -207,3 +208,8 @@ class NonLocals(ast.NodeVisitor):
                        parent = parent.value
                    if isinstance(parent, ast.Name):
                        self.loads.add(parent.id + "." + attr_expr)
+
+
+def is_xxh3_128_hexdigest(value: str) -> bool:
+    """Check if the given string matches the format of xxh3_128_hexdigest."""
+    return bool(re.fullmatch(r"[0-9a-f]{32}", value))
@@ -19,6 +19,7 @@ from typing import (

 from langchain_core.runnables import Runnable, RunnableConfig
 from typing_extensions import Self
+from xxhash import xxh3_128_hexdigest

 from langgraph.checkpoint.base import BaseCheckpointSaver, CheckpointMetadata
 from langgraph.utils.fields import get_update_as_tuples
@@ -48,7 +49,7 @@ Checkpointer = Union[None, bool, BaseCheckpointSaver]
 StreamMode = Literal["values", "updates", "debug", "messages", "custom"]
 """How the stream method should emit outputs.

- `"values"`: Emit all values in the state after each step.
+- `"values"`: Emit all values in the state after each step, including interrupts.
    When used with functional API, values are emitted once at the end of the workflow.
 - `"updates"`: Emit only the node or task names and updates returned by the nodes or tasks after each step.
    If multiple updates are made in the same step (e.g. multiple nodes are run) then those updates are emitted separately.
@@ -141,6 +142,13 @@ class Interrupt:
    ns: Optional[Sequence[str]] = None
    when: Literal["during"] = dataclasses.field(default="during", repr=False)

+    @property
+    def interrupt_id(self) -> str:
+        """Generate a unique ID for the interrupt based on its namespace."""
+        if self.ns is None:
+            return "placeholder-id"
+        return xxh3_128_hexdigest("|".join(self.ns).encode())
+

 class StateUpdate(NamedTuple):
    values: Optional[dict[str, Any]]
@@ -184,19 +192,21 @@ class StateSnapshot(NamedTuple):
    """Snapshot of the state of the graph at the beginning of a step."""

    values: Union[dict[str, Any], Any]
-    """Current values of channels"""
+    """Current values of channels."""
    next: tuple[str, ...]
    """The name of the node to execute in each task for this step."""
    config: RunnableConfig
-    """Config used to fetch this snapshot"""
+    """Config used to fetch this snapshot."""
    metadata: Optional[CheckpointMetadata]
-    """Metadata associated with this snapshot"""
+    """Metadata associated with this snapshot."""
    created_at: Optional[str]
-    """Timestamp of snapshot creation"""
+    """Timestamp of snapshot creation."""
    parent_config: Optional[RunnableConfig]
-    """Config used to fetch the parent snapshot, if any"""
+    """Config used to fetch the parent snapshot, if any."""
    tasks: tuple[PregelTask, ...]
    """Tasks to execute in this step. If already attempted, may contain an error."""
+    interrupts: tuple[Interrupt, ...]
+    """Interrupts that occurred in this step that are pending resolution."""


 class Send:
@@ -286,6 +296,10 @@ class Command(Generic[N], ToolOutputMixin):
            - Command.PARENT: closest parent graph
        update: update to apply to the graph's state.
        resume: value to resume execution with. To be used together with [`interrupt()`][langgraph.types.interrupt].
+            Can be one of the following:
+
+            - mapping of interrupt ids to resume values
+            - a single value with which to resume the next interrupt
        goto: can be one of the following:

            - name of the node to navigate to next (any node that belongs to the specified `graph`)
@@ -296,7 +310,7 @@ class Command(Generic[N], ToolOutputMixin):

    graph: Optional[str] = None
    update: Optional[Any] = None
-    resume: Optional[Union[Any, dict[str, Any]]] = None
+    resume: Optional[Union[dict[str, Any], Any]] = None
    goto: Union[Send, Sequence[Union[Send, str]], str] = ()

    def __repr__(self) -> str:
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "aiosqlite"
@@ -26,6 +26,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -51,7 +52,7 @@ typing-extensions = {version = ">=4.1", markers = "python_version < \"3.11\""}

 [package.extras]
 doc = ["Sphinx (>=7.4,<8.0)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx-rtd-theme"]
-test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "truststore (>=0.9.1)", "uvloop (>=0.21.0b1)"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "truststore (>=0.9.1) ; python_version >= \"3.10\"", "uvloop (>=0.21.0b1) ; platform_python_implementation == \"CPython\" and platform_system != \"Windows\""]
 trio = ["trio (>=0.26.1)"]

 [[package]]
@@ -162,8 +163,8 @@ files = [
 six = ">=1.12.0"

 [package.extras]
-astroid = ["astroid (>=1,<2)", "astroid (>=2,<4)"]
-test = ["astroid (>=1,<2)", "astroid (>=2,<4)", "pytest"]
+astroid = ["astroid (>=1,<2) ; python_version < \"3\"", "astroid (>=2,<4) ; python_version >= \"3\""]
+test = ["astroid (>=1,<2) ; python_version < \"3\"", "astroid (>=2,<4) ; python_version >= \"3\"", "pytest"]

 [[package]]
 name = "async-lru"
@@ -193,12 +194,12 @@ files = [
 ]

 [package.extras]
-benchmark = ["cloudpickle", "hypothesis", "mypy (>=1.11.1)", "pympler", "pytest (>=4.3.0)", "pytest-codspeed", "pytest-mypy-plugins", "pytest-xdist[psutil]"]
-cov = ["cloudpickle", "coverage[toml] (>=5.3)", "hypothesis", "mypy (>=1.11.1)", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "pytest-xdist[psutil]"]
-dev = ["cloudpickle", "hypothesis", "mypy (>=1.11.1)", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "pytest-xdist[psutil]"]
+benchmark = ["cloudpickle ; platform_python_implementation == \"CPython\"", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pympler", "pytest (>=4.3.0)", "pytest-codspeed", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
+cov = ["cloudpickle ; platform_python_implementation == \"CPython\"", "coverage[toml] (>=5.3)", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
+dev = ["cloudpickle ; platform_python_implementation == \"CPython\"", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pre-commit", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
 docs = ["cogapp", "furo", "myst-parser", "sphinx", "sphinx-notfound-page", "sphinxcontrib-towncrier", "towncrier (<24.7)"]
-tests = ["cloudpickle", "hypothesis", "mypy (>=1.11.1)", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins", "pytest-xdist[psutil]"]
-tests-mypy = ["mypy (>=1.11.1)", "pytest-mypy-plugins"]
+tests = ["cloudpickle ; platform_python_implementation == \"CPython\"", "hypothesis", "mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pympler", "pytest (>=4.3.0)", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\"", "pytest-xdist[psutil]"]
+tests-mypy = ["mypy (>=1.11.1) ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\"", "pytest-mypy-plugins ; platform_python_implementation == \"CPython\" and python_version >= \"3.9\" and python_version < \"3.13\""]

 [[package]]
 name = "babel"
@@ -461,6 +462,7 @@ files = [
    {file = "charset_normalizer-3.4.0-py3-none-any.whl", hash = "sha256:fe9f97feb71aa9896b81973a7bbada8c49501dc73e58a10fcef6663af95e5079"},
    {file = "charset_normalizer-3.4.0.tar.gz", hash = "sha256:223217c3d4f82c3ac5e29032b3f1c2eb0fb591b72161f86d93f5719079dae93e"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "colorama"
@@ -569,7 +571,7 @@ files = [
 tomli = {version = "*", optional = true, markers = "python_full_version <= \"3.11.0a6\" and extra == \"toml\""}

 [package.extras]
-toml = ["tomli"]
+toml = ["tomli ; python_full_version <= \"3.11.0a6\""]

 [[package]]
 name = "debugpy"
@@ -675,7 +677,7 @@ files = [
 ]

 [package.extras]
-tests = ["asttokens (>=2.1.0)", "coverage", "coverage-enable-subprocess", "ipython", "littleutils", "pytest", "rich"]
+tests = ["asttokens (>=2.1.0)", "coverage", "coverage-enable-subprocess", "ipython", "littleutils", "pytest", "rich ; python_version >= \"3.11\""]

 [[package]]
 name = "fastjsonschema"
@@ -692,6 +694,19 @@ files = [
 [package.extras]
 devel = ["colorama", "json-spec", "jsonschema", "pylint", "pytest", "pytest-benchmark", "pytest-cache", "validictory"]

+[[package]]
+name = "fqdn"
+version = "1.4.0"
+description = "Validate fully-qualified domain names compliant to RFC 1035 and the preferred form in RFC 3686 s. 2."
+optional = false
+python-versions = "*"
+groups = ["dev"]
+markers = "python_version >= \"3.13\""
+files = [
+    {file = "fqdn-1.4.0-py3-none-any.whl", hash = "sha256:e935616ae81c9c60a22267593fe8e6af68cecc68549cc71bb9bfbcbbcb383386"},
+    {file = "fqdn-1.4.0.tar.gz", hash = "sha256:30e8f2e685ce87cdace4712fd97c5d09f5e6fa519bbb66e8f188f6a7cb3a5c4e"},
+]
+
 [[package]]
 name = "fqdn"
 version = "1.5.1"
@@ -699,6 +714,7 @@ description = "Validates fully-qualified domain names against RFC 1123, so that
 optional = false
 python-versions = ">=2.7, !=3.0, !=3.1, !=3.2, !=3.3, !=3.4, <4"
 groups = ["dev"]
+markers = "python_version < \"3.13\""
 files = [
    {file = "fqdn-1.5.1-py3-none-any.whl", hash = "sha256:3a179af3761e4df6eb2e026ff9e1a3033d3587bf980a0b1b2e1e5d08d7358014"},
    {file = "fqdn-1.5.1.tar.gz", hash = "sha256:105ed3677e767fb5ca086a0c1f4bb66ebc3c100be518f0e0d755d9eae164d89f"},
@@ -706,31 +722,31 @@ files = [

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main", "dev"]
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.6"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
 files = [
-    {file = "httpcore-1.0.6-py3-none-any.whl", hash = "sha256:27b59625743b85577a8c0e10e55b50b5368a4f2cfe8cc7bcfa9cf00829c2682f"},
-    {file = "httpcore-1.0.6.tar.gz", hash = "sha256:73f6dbd6eb8c21bbf7ef8efad555481853f5f6acdeaff1edb0694289269ee17f"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
@@ -758,7 +774,7 @@ idna = "*"
 sniffio = "*"

 [package.extras]
-brotli = ["brotli", "brotlicffi"]
+brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi ; platform_python_implementation != \"CPython\""]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
@@ -785,7 +801,7 @@ description = "Read metadata from Python packages"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
-markers = "python_version < \"3.10\""
+markers = "python_version == \"3.9\""
 files = [
    {file = "importlib_metadata-8.5.0-py3-none-any.whl", hash = "sha256:45e54197d28b7a7f1559e60b95e7c567032b602131fbd588f1497f47880aa68b"},
    {file = "importlib_metadata-8.5.0.tar.gz", hash = "sha256:71522656f0abace1d072b9e5481a48f07c138e00f079c38c8f883823f9c26bd7"},
@@ -795,12 +811,12 @@ files = [
 zipp = ">=3.20"

 [package.extras]
-check = ["pytest-checkdocs (>=2.4)", "pytest-ruff (>=0.2.1)"]
+check = ["pytest-checkdocs (>=2.4)", "pytest-ruff (>=0.2.1) ; sys_platform != \"cygwin\""]
 cover = ["pytest-cov"]
 doc = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
 enabler = ["pytest-enabler (>=2.2)"]
 perf = ["ipython"]
-test = ["flufl.flake8", "importlib-resources (>=1.3)", "jaraco.test (>=5.4)", "packaging", "pyfakefs", "pytest (>=6,!=8.1.*)", "pytest-perf (>=0.9.2)"]
+test = ["flufl.flake8", "importlib-resources (>=1.3) ; python_version < \"3.9\"", "jaraco.test (>=5.4)", "packaging", "pyfakefs", "pytest (>=6,!=8.1.*)", "pytest-perf (>=0.9.2)"]
 type = ["pytest-mypy"]

 [[package]]
@@ -981,6 +997,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -1000,6 +1017,7 @@ files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "jsonschema"
@@ -1088,7 +1106,7 @@ traitlets = ">=5.3"

 [package.extras]
 docs = ["ipykernel", "myst-parser", "pydata-sphinx-theme", "sphinx (>=4)", "sphinx-autodoc-typehints", "sphinxcontrib-github-alt", "sphinxcontrib-spelling"]
-test = ["coverage", "ipykernel (>=6.14)", "mypy", "paramiko", "pre-commit", "pytest (<8.2.0)", "pytest-cov", "pytest-jupyter[client] (>=0.4.1)", "pytest-timeout"]
+test = ["coverage", "ipykernel (>=6.14)", "mypy", "paramiko ; sys_platform == \"win32\"", "pre-commit", "pytest (<8.2.0)", "pytest-cov", "pytest-jupyter[client] (>=0.4.1)", "pytest-timeout"]

 [[package]]
 name = "jupyter-console"
@@ -1329,6 +1347,7 @@ description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langchain_core-0.3.55-py3-none-any.whl", hash = "sha256:b3cb36bf37755a616158a79866657c6697b43a2f7c69dd723ce425f1c76c1baa"},
    {file = "langchain_core-0.3.55.tar.gz", hash = "sha256:0f2b3e311621116a83510c70b0ac9d959030a0a457a69483535cff18501fedc9"},
@@ -1348,16 +1367,16 @@ typing-extensions = ">=4.7"

 [[package]]
 name = "langgraph-checkpoint"
-version = "2.0.24"
+version = "2.0.25"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.2.38,<0.4"
+langchain-core = {version = ">=0.2.38", markers = "python_version < \"4.0\""}
 ormsgpack = "^1.8.0"

 [package.source]
@@ -1366,10 +1385,10 @@ url = "../checkpoint"

 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.19"
+version = "2.0.21"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = []
 develop = true
@@ -1389,7 +1408,7 @@ name = "langgraph-checkpoint-sqlite"
 version = "2.0.6"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 optional = false
-python-versions = "^3.9.0"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = []
 develop = true
@@ -1407,13 +1426,13 @@ name = "langgraph-prebuilt"
 version = "0.1.8"
 description = "Library with high-level APIs for creating and executing LangGraph agents and tools."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.2.43,<0.4.0,!=0.3.0,!=0.3.1,!=0.3.2,!=0.3.3,!=0.3.4,!=0.3.5,!=0.3.6,!=0.3.7,!=0.3.8,!=0.3.9,!=0.3.10,!=0.3.11,!=0.3.12,!=0.3.13,!=0.3.14,!=0.3.15,!=0.3.16,!=0.3.17,!=0.3.18,!=0.3.19,!=0.3.20,!=0.3.21,!=0.3.22"
+langchain-core = {version = ">=0.3.22", markers = "python_version < \"4.0\""}
 langgraph-checkpoint = "^2.0.10"

 [package.source]
@@ -1422,10 +1441,10 @@ url = "../prebuilt"

 [[package]]
 name = "langgraph-sdk"
-version = "0.1.61"
+version = "0.1.63"
 description = "SDK for interacting with LangGraph API"
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true
@@ -1445,6 +1464,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = false
 python-versions = "<4.0,>=3.8.1"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langsmith-0.1.138-py3-none-any.whl", hash = "sha256:5c2bd5c11c75f7b3d06a0f06b115186e7326ca969fd26d66ffc65a0669012aee"},
    {file = "langsmith-0.1.138.tar.gz", hash = "sha256:1ecf613bb52f6bf17f1510e24ad8b70d4b0259bc9d3dbfd69b648c66d4644f0b"},
@@ -1742,7 +1762,7 @@ tornado = ">=6.2.0"
 [package.extras]
 dev = ["hatch", "pre-commit"]
 docs = ["myst-parser", "nbsphinx", "pydata-sphinx-theme", "sphinx (>=1.3.6)", "sphinxcontrib-github-alt", "sphinxcontrib-spelling"]
-test = ["importlib-resources (>=5.0)", "ipykernel", "jupyter-server[test] (>=2.4.0,<3)", "jupyterlab-server[test] (>=2.27.1,<3)", "nbval", "pytest (>=7.0)", "pytest-console-scripts", "pytest-timeout", "pytest-tornasync", "requests"]
+test = ["importlib-resources (>=5.0) ; python_version < \"3.10\"", "ipykernel", "jupyter-server[test] (>=2.4.0,<3)", "jupyterlab-server[test] (>=2.27.1,<3)", "nbval", "pytest (>=7.0)", "pytest-console-scripts", "pytest-timeout", "pytest-tornasync", "requests"]

 [[package]]
 name = "notebook-shim"
@@ -1889,6 +1909,7 @@ files = [
    {file = "packaging-24.1-py3-none-any.whl", hash = "sha256:5b8f2217dbdbd2f7f384c41c628544e6d52f2d0f53c6d0c3ea61aa5d1d7ff124"},
    {file = "packaging-24.1.tar.gz", hash = "sha256:026ed72c8ed3fcce5bf8950572258698927fd1dbda10a5e981cdf0ac37f4f002"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "pandocfilters"
@@ -2046,8 +2067,8 @@ typing-extensions = {version = ">=4.6", markers = "python_version < \"3.13\""}
 tzdata = {version = "*", markers = "sys_platform == \"win32\""}

 [package.extras]
-binary = ["psycopg-binary (==3.2.3)"]
-c = ["psycopg-c (==3.2.3)"]
+binary = ["psycopg-binary (==3.2.3) ; implementation_name != \"pypy\""]
+c = ["psycopg-c (==3.2.3) ; implementation_name != \"pypy\""]
 dev = ["ast-comments (>=1.1.2)", "black (>=24.1.0)", "codespell (>=2.2)", "dnspython (>=2.1)", "flake8 (>=4.0)", "mypy (>=1.11)", "types-setuptools (>=57.4)", "wheel (>=0.37)"]
 docs = ["Sphinx (>=5.0)", "furo (==2022.6.21)", "sphinx-autobuild (>=2021.3.14)", "sphinx-autodoc-typehints (>=1.12)"]
 pool = ["psycopg-pool"]
@@ -2249,6 +2270,7 @@ description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic-2.9.2-py3-none-any.whl", hash = "sha256:f048cec7b26778210e28a0459867920654d48e5e62db0958433636cde4254f12"},
    {file = "pydantic-2.9.2.tar.gz", hash = "sha256:d155cef71265d1e9807ed1c32b4c8deec042a44a50a4188b25ac67ecd81a9c0f"},
@@ -2264,7 +2286,7 @@ typing-extensions = [

 [package.extras]
 email = ["email-validator (>=2.0.0)"]
-timezone = ["tzdata"]
+timezone = ["tzdata ; python_version >= \"3.9\" and sys_platform == \"win32\""]

 [[package]]
 name = "pydantic-core"
@@ -2273,6 +2295,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.23.4-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:b10bd51f823d891193d4717448fab065733958bdb6a6b351967bd349d48d5c9b"},
    {file = "pydantic_core-2.23.4-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:4fc714bdbfb534f94034efaa6eadd74e5b93c8fa6315565a222f7b6f42ca1166"},
@@ -2399,7 +2422,7 @@ files = [
 psutil = ">=5.9.0"

 [package.extras]
-dev = ["importlib-metadata", "tox"]
+dev = ["importlib-metadata ; python_version < \"3.8\"", "tox"]

 [[package]]
 name = "pytest"
@@ -2499,6 +2522,7 @@ description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pytest_watcher-0.4.3-py3-none-any.whl", hash = "sha256:d59b1e1396f33a65ea4949b713d6884637755d641646960056a90b267c3460f9"},
    {file = "pytest_watcher-0.4.3.tar.gz", hash = "sha256:0cb0e4661648c8c0ff2b2d25efa5a8e421784b9e4c60fcecbf9b7c30b2d731b3"},
@@ -2680,6 +2704,7 @@ files = [
    {file = "PyYAML-6.0.2-cp39-cp39-win_amd64.whl", hash = "sha256:39693e1f8320ae4f43943590b49779ffb98acb81f788220ea932a6b6c51004d8"},
    {file = "pyyaml-6.0.2.tar.gz", hash = "sha256:d584d9ec91ad65861cc08d42e834324ef890a082e591037abe114850ff7bbc3e"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "pyzmq"
@@ -2830,6 +2855,7 @@ files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [package.dependencies]
 certifi = ">=2017.4.17"
@@ -2848,6 +2874,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -3037,9 +3064,9 @@ files = [
 ]

 [package.extras]
-nativelib = ["pyobjc-framework-Cocoa", "pywin32"]
-objc = ["pyobjc-framework-Cocoa"]
-win32 = ["pywin32"]
+nativelib = ["pyobjc-framework-Cocoa ; sys_platform == \"darwin\"", "pywin32 ; sys_platform == \"win32\""]
+objc = ["pyobjc-framework-Cocoa ; sys_platform == \"darwin\""]
+win32 = ["pywin32 ; sys_platform == \"win32\""]

 [[package]]
 name = "setuptools"
@@ -3054,13 +3081,13 @@ files = [
 ]

 [package.extras]
-check = ["pytest-checkdocs (>=2.4)", "pytest-ruff (>=0.2.1)", "ruff (>=0.5.2)"]
-core = ["importlib-metadata (>=6)", "importlib-resources (>=5.10.2)", "jaraco.collections", "jaraco.functools", "jaraco.text (>=3.7)", "more-itertools", "more-itertools (>=8.8)", "packaging", "packaging (>=24)", "platformdirs (>=4.2.2)", "tomli (>=2.0.1)", "wheel (>=0.43.0)"]
+check = ["pytest-checkdocs (>=2.4)", "pytest-ruff (>=0.2.1) ; sys_platform != \"cygwin\"", "ruff (>=0.5.2) ; sys_platform != \"cygwin\""]
+core = ["importlib-metadata (>=6) ; python_version < \"3.10\"", "importlib-resources (>=5.10.2) ; python_version < \"3.9\"", "jaraco.collections", "jaraco.functools", "jaraco.text (>=3.7)", "more-itertools", "more-itertools (>=8.8)", "packaging", "packaging (>=24)", "platformdirs (>=4.2.2)", "tomli (>=2.0.1) ; python_version < \"3.11\"", "wheel (>=0.43.0)"]
 cover = ["pytest-cov"]
 doc = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "pygments-github-lexers (==0.0.5)", "pyproject-hooks (!=1.1)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-favicon", "sphinx-inline-tabs", "sphinx-lint", "sphinx-notfound-page (>=1,<2)", "sphinx-reredirects", "sphinxcontrib-towncrier", "towncrier (<24.7)"]
 enabler = ["pytest-enabler (>=2.2)"]
-test = ["build[virtualenv] (>=1.0.3)", "filelock (>=3.4.0)", "ini2toml[lite] (>=0.14)", "jaraco.develop (>=7.21)", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "jaraco.test (>=5.5)", "packaging (>=23.2)", "pip (>=19.1)", "pyproject-hooks (!=1.1)", "pytest (>=6,!=8.1.*)", "pytest-home (>=0.5)", "pytest-perf", "pytest-subprocess", "pytest-timeout", "pytest-xdist (>=3)", "tomli-w (>=1.0.0)", "virtualenv (>=13.0.0)", "wheel (>=0.44.0)"]
-type = ["importlib-metadata (>=7.0.2)", "jaraco.develop (>=7.21)", "mypy (==1.12.*)", "pytest-mypy"]
+test = ["build[virtualenv] (>=1.0.3)", "filelock (>=3.4.0)", "ini2toml[lite] (>=0.14)", "jaraco.develop (>=7.21) ; python_version >= \"3.9\" and sys_platform != \"cygwin\"", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "jaraco.test (>=5.5)", "packaging (>=23.2)", "pip (>=19.1)", "pyproject-hooks (!=1.1)", "pytest (>=6,!=8.1.*)", "pytest-home (>=0.5)", "pytest-perf ; sys_platform != \"cygwin\"", "pytest-subprocess", "pytest-timeout", "pytest-xdist (>=3)", "tomli-w (>=1.0.0)", "virtualenv (>=13.0.0)", "wheel (>=0.44.0)"]
+type = ["importlib-metadata (>=7.0.2) ; python_version < \"3.10\"", "jaraco.develop (>=7.21) ; sys_platform != \"cygwin\"", "mypy (==1.12.*)", "pytest-mypy"]

 [[package]]
 name = "six"
@@ -3140,6 +3167,7 @@ description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "tenacity-9.0.0-py3-none-any.whl", hash = "sha256:93de0c98785b27fcf659856aa9f54bfbd399e29969b0621bc7f762bd441b4539"},
    {file = "tenacity-9.0.0.tar.gz", hash = "sha256:807f37ca97d62aa361264d497b0e31e92b8027044942bfa756160d908320d73b"},
@@ -3278,6 +3306,7 @@ files = [
    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "tzdata"
@@ -3318,9 +3347,10 @@ files = [
    {file = "urllib3-2.2.3-py3-none-any.whl", hash = "sha256:ca899ca043dcb1bafa3e262d73aa25c465bfb49e0bd9dd5d59f1d0acba2f8fac"},
    {file = "urllib3-2.2.3.tar.gz", hash = "sha256:e7d814a81dad81e6caf2ec9fdedb284ecc9c73076b62654547cc64ccdcae26e9"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [package.extras]
-brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+brotli = ["brotli (>=1.0.9) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=0.8.0) ; platform_python_implementation != \"CPython\""]
 h2 = ["h2 (>=4,<5)"]
 socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
 zstd = ["zstandard (>=0.18.0)"]
@@ -3384,6 +3414,7 @@ description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "watchdog-5.0.3-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:85527b882f3facda0579bce9d743ff7f10c3e1e0db0a0d0e28170a7d0e5ce2ea"},
    {file = "watchdog-5.0.3-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:53adf73dcdc0ef04f7735066b4a57a4cd3e49ef135daae41d77395f0b5b692cb"},
@@ -3629,21 +3660,21 @@ description = "Backport of pathlib-compatible object wrapper for zip files"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
-markers = "python_version < \"3.10\""
+markers = "python_version == \"3.9\""
 files = [
    {file = "zipp-3.20.2-py3-none-any.whl", hash = "sha256:a817ac80d6cf4b23bf7f2828b7cabf326f15a001bea8b1f9b49631780ba28350"},
    {file = "zipp-3.20.2.tar.gz", hash = "sha256:bc9eb26f4506fda01b81bcde0ca78103b6e62f991b381fec825435c836edbc29"},
 ]

 [package.extras]
-check = ["pytest-checkdocs (>=2.4)", "pytest-ruff (>=0.2.1)"]
+check = ["pytest-checkdocs (>=2.4)", "pytest-ruff (>=0.2.1) ; sys_platform != \"cygwin\""]
 cover = ["pytest-cov"]
 doc = ["furo", "jaraco.packaging (>=9.3)", "jaraco.tidelift (>=1.4)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-lint"]
 enabler = ["pytest-enabler (>=2.2)"]
-test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more-itertools", "pytest (>=6,!=8.1.*)", "pytest-ignore-flaky"]
+test = ["big-O", "importlib-resources ; python_version < \"3.9\"", "jaraco.functools", "jaraco.itertools", "jaraco.test", "more-itertools", "pytest (>=6,!=8.1.*)", "pytest-ignore-flaky"]
 type = ["pytest-mypy"]

 [metadata]
 lock-version = "2.1"
-python-versions = ">=3.9.0,<4.0"
-content-hash = "1a6454eb63ce88ddfddd0d49530a6fef0f02ac6b0b52be5d6710af8e47b1de24"
+python-versions = ">=3.9"
+content-hash = "0e0c3fc2d5a5348c8df102497c7221a1f052f37a788b315eb82dfc7d63423e17"
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph"
-version = "0.3.31"
+version = "0.4.0"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 license = "MIT"
@@ -8,11 +8,11 @@ readme = "README.md"
 repository = "https://www.github.com/langchain-ai/langgraph"

 [tool.poetry.dependencies]
-python = ">=3.9.0,<4.0"
-langchain-core = ">=0.1,<0.4"
+python = ">=3.9"
+langchain-core = { version = ">=0.1", python = "<4.0" }
 langgraph-checkpoint = "^2.0.10"
-langgraph-sdk = "^0.1.42"
-langgraph-prebuilt = ">=0.1.8,<0.2"
+langgraph-sdk = { version = ">=0.1.42", python = "<4.0" }
+langgraph-prebuilt = { version = ">=0.1.8", python = "<4.0" }
 xxhash = "^3.5.0"

 [tool.poetry.group.dev.dependencies]
@@ -22,7 +22,7 @@ pytest-dotenv = "^0.5.2"
 pytest-mock  = "^3.10.0"
 syrupy = "^4.0.2"
 httpx = "^0.26.0"
-pytest-watcher = "^0.4.1"
+pytest-watcher = { version = ">=0.4.1", python = "<4.0" }
 mypy = "^1.6.0"
 ruff = "^0.6.2"
 jupyter = "^1.0.0"
@@ -86,6 +86,12 @@
        "source": "__start__",
        "target": "agent"
      },
+      {
+        "source": "agent",
+        "target": "__end__",
+        "data": "exit",
+        "conditional": true
+      },
      {
        "source": "agent",
        "target": "tools",
@@ -95,11 +101,6 @@
      {
        "source": "tools",
        "target": "agent"
-      },
-      {
-        "source": "agent",
-        "target": "__end__",
-        "conditional": true
      }
    ]
  }
@@ -109,9 +110,9 @@
  '''
  graph TD;
  	__start__ --> agent;
+  	agent -. &nbsp;exit&nbsp; .-> __end__;
  	agent -. &nbsp;continue&nbsp; .-> tools;
  	tools --> agent;
-  	agent -.-> __end__;
  
  '''
 # ---
@@ -130,9 +131,9 @@
  	__start__([<p>__start__</p>]):::first
  	__end__([<p>__end__</p>]):::last
  	__start__ --> agent;
+  	agent -. &nbsp;exit&nbsp; .-> __end__;
  	agent -. &nbsp;continue&nbsp; .-> tools;
  	tools --> agent;
-  	agent -.-> __end__;
  	classDef default fill:#f2f0ff,line-height:1.2
  	classDef first fill-opacity:0
  	classDef last fill:#bfb6fc
@@ -67,7 +67,8 @@
      },
      {
        "source": "left",
-        "target": "__end__"
+        "target": "__end__",
+        "conditional": true
      },
      {
        "source": "right",
@@ -82,7 +83,7 @@
  graph TD;
  	__start__ -. &nbsp;go-left&nbsp; .-> left;
  	__start__ -. &nbsp;go-right&nbsp; .-> right;
-  	left --> __end__;
+  	left -.-> __end__;
  	right --> __end__;
  
  '''
@@ -481,6 +482,17 @@
  
  '''
 # ---
+# name: test_migration_graph
+  '''
+  graph TD;
+  	B -. &nbsp;X&nbsp; .-> C;
+  	B -. &nbsp;Y&nbsp; .-> D;
+  	D --> B;
+  	__start__ --> B;
+  	C --> __end__;
+  
+  '''
+# ---
 # name: test_multiple_sinks_subgraphs
  '''
  ---
@@ -532,12 +544,14 @@
  ---
  graph TD;
  	__start__([<p>__start__</p>]):::first
-  	inner(inner)
  	side(side)
  	__end__([<p>__end__</p>]):::last
-  	__start__ --> inner;
-  	inner --> side;
+  	__start__ --> inner_up;
+  	inner_up --> side;
  	side --> __end__;
+  	subgraph inner
+  	inner_up(up)
+  	end
  	classDef default fill:#f2f0ff,line-height:1.2
  	classDef first fill-opacity:0
  	classDef last fill:#bfb6fc
@@ -550,8 +564,48 @@
      dict({
        'conditional': True,
        'source': '__start__',
+        'target': 'tool_one',
+      }),
+      dict({
+        'conditional': True,
+        'source': '__start__',
+        'target': 'tool_three',
+      }),
+      dict({
+        'conditional': True,
+        'source': '__start__',
+        'target': 'tool_two:__start__',
+      }),
+      dict({
+        'source': 'tool_one',
        'target': '__end__',
      }),
+      dict({
+        'source': 'tool_three',
+        'target': '__end__',
+      }),
+      dict({
+        'source': 'tool_two:__end__',
+        'target': '__end__',
+      }),
+      dict({
+        'conditional': True,
+        'source': 'tool_two:__start__',
+        'target': 'tool_two:tool_two_fast',
+      }),
+      dict({
+        'conditional': True,
+        'source': 'tool_two:__start__',
+        'target': 'tool_two:tool_two_slow',
+      }),
+      dict({
+        'source': 'tool_two:tool_two_fast',
+        'target': 'tool_two:__end__',
+      }),
+      dict({
+        'source': 'tool_two:tool_two_slow',
+        'target': 'tool_two:__end__',
+      }),
    ]),
    'nodes': list([
      dict({
@@ -580,19 +634,6 @@
        'id': 'tool_one',
        'type': 'runnable',
      }),
-      dict({
-        'data': dict({
-          'id': list([
-            'langgraph',
-            'graph',
-            'state',
-            'CompiledStateGraph',
-          ]),
-          'name': 'tool_two',
-        }),
-        'id': 'tool_two',
-        'type': 'runnable',
-      }),
      dict({
        'data': dict({
          'id': list([
@@ -609,6 +650,48 @@
      dict({
        'id': '__end__',
      }),
+      dict({
+        'data': dict({
+          'id': list([
+            'langchain',
+            'schema',
+            'runnable',
+            'RunnablePassthrough',
+          ]),
+          'name': 'tool_two:__start__',
+        }),
+        'id': 'tool_two:__start__',
+        'type': 'runnable',
+      }),
+      dict({
+        'data': dict({
+          'id': list([
+            'langgraph',
+            'utils',
+            'runnable',
+            'RunnableCallable',
+          ]),
+          'name': 'tool_two:tool_two_slow',
+        }),
+        'id': 'tool_two:tool_two_slow',
+        'type': 'runnable',
+      }),
+      dict({
+        'data': dict({
+          'id': list([
+            'langgraph',
+            'utils',
+            'runnable',
+            'RunnableCallable',
+          ]),
+          'name': 'tool_two:tool_two_fast',
+        }),
+        'id': 'tool_two:tool_two_fast',
+        'type': 'runnable',
+      }),
+      dict({
+        'id': 'tool_two:__end__',
+      }),
    ]),
  })
 # ---
@@ -620,12 +703,26 @@
      curve: linear
  ---
  graph TD;
-  	__start__(<p>__start__</p>)
+  	__start__([<p>__start__</p>]):::first
  	tool_one(tool_one)
-  	tool_two(tool_two)
  	tool_three(tool_three)
-  	__end__(<p>__end__</p>)
-  	__start__ -.-> __end__;
+  	__end__([<p>__end__</p>]):::last
+  	__start__ -.-> tool_one;
+  	__start__ -.-> tool_three;
+  	__start__ -.-> tool_two___start__;
+  	tool_one --> __end__;
+  	tool_three --> __end__;
+  	tool_two___end__ --> __end__;
+  	subgraph tool_two
+  	tool_two___start__(<p>__start__</p>)
+  	tool_two_tool_two_slow(tool_two_slow)
+  	tool_two_tool_two_fast(tool_two_fast)
+  	tool_two___end__(<p>__end__</p>)
+  	tool_two___start__ -.-> tool_two_tool_two_fast;
+  	tool_two___start__ -.-> tool_two_tool_two_slow;
+  	tool_two_tool_two_fast --> tool_two___end__;
+  	tool_two_tool_two_slow --> tool_two___end__;
+  	end
  	classDef default fill:#f2f0ff,line-height:1.2
  	classDef first fill-opacity:0
  	classDef last fill:#bfb6fc
@@ -642,9 +739,6 @@
  	Researcher -. &nbsp;call_tool&nbsp; .-> Call_Tool;
  	Researcher -. &nbsp;continue&nbsp; .-> Chart_Generator;
  	__start__ --> Researcher;
-  	Call_Tool -.-> __end__;
-  	Chart_Generator -.-> __end__;
-  	Researcher -.-> __end__;
  	Researcher -. &nbsp;redo&nbsp; .-> Researcher;
  
  '''
@@ -1014,7 +1108,6 @@
      dict({
        'id': 'conduct_interview:__end__',
      }),
-
    ]),
  })
 # ---
@@ -63,6 +63,7 @@ def get_expected_history(*, exc_task_results: int = 0) -> list[StateSnapshot]:
                }
            },
            tasks=(),
+            interrupts=(),
        ),
        StateSnapshot(
            values={
@@ -113,6 +114,15 @@ def get_expected_history(*, exc_task_results: int = 0) -> list[StateSnapshot]:
                    else {"answer": "doc1,doc2,doc3,doc4"},
                ),
            ),
+            interrupts=()
+            if exc_task_results
+            else (
+                Interrupt(
+                    value="",
+                    resumable=True,
+                    ns=[AnyStr("qa:")],
+                ),
+            ),
        ),
        StateSnapshot(
            values={
@@ -156,6 +166,7 @@ def get_expected_history(*, exc_task_results: int = 0) -> list[StateSnapshot]:
                    result=None if exc_task_results else {"docs": ["doc1", "doc2"]},
                ),
            ),
+            interrupts=(),
        ),
        StateSnapshot(
            values={"query": "query: what is weather in sf", "docs": []},
@@ -206,6 +217,7 @@ def get_expected_history(*, exc_task_results: int = 0) -> list[StateSnapshot]:
                    else {"docs": ["doc3", "doc4"]},
                ),
            ),
+            interrupts=(),
        ),
        StateSnapshot(
            values={"query": "what is weather in sf", "docs": []},
@@ -245,6 +257,7 @@ def get_expected_history(*, exc_task_results: int = 0) -> list[StateSnapshot]:
                    else {"query": "query: what is weather in sf"},
                ),
            ),
+            interrupts=(),
        ),
        StateSnapshot(
            values={"docs": []},
@@ -276,6 +289,7 @@ def get_expected_history(*, exc_task_results: int = 0) -> list[StateSnapshot]:
                    result={"query": "what is weather in sf"},
                ),
            ),
+            interrupts=(),
        ),
    ]

@@ -1731,6 +1745,7 @@ def test_saved_checkpoint_state_graph(
            created_at=AnyStr(),
            parent_config=latest_state.parent_config,
            tasks=latest_state.tasks,
+            interrupts=latest_state.interrupts,
        )
        == history[0]
    )
@@ -1802,6 +1817,7 @@ async def test_saved_checkpoint_state_graph_async(
                created_at=AnyStr(),
                parent_config=latest_state.parent_config,
                tasks=latest_state.tasks,
+                interrupts=latest_state.interrupts,
            )
            == history[0]
        )
@@ -141,6 +141,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[1].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"inbox": 4, "output": 4, "input": 3},
@@ -164,6 +165,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[2].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"inbox": 21, "output": 4, "input": 3},
@@ -187,6 +189,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[3].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"inbox": 21, "output": 4, "input": 20},
@@ -208,6 +211,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[4].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"inbox": 3, "output": 4, "input": 20},
@@ -231,6 +235,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[5].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"inbox": 3, "output": 4, "input": 2},
@@ -252,6 +257,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[6].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"inbox": 3, "input": 2},
@@ -275,6 +281,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=history[7].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values={"input": 2},
@@ -298,6 +305,7 @@ async def test_invoke_two_processes_in_out_interrupt(
                },
                created_at=AnyStr(),
                parent_config=None,
+                interrupts=(),
            ),
        ]

@@ -374,6 +382,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=history[1].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values=5,
@@ -395,6 +404,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=history[2].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values=4,
@@ -416,6 +426,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=history[3].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values=3,
@@ -437,6 +448,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=history[4].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values=2,
@@ -458,6 +470,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=history[5].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values=1,
@@ -479,6 +492,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=history[6].config,
+                interrupts=(),
            ),
            StateSnapshot(
                values=0,
@@ -502,6 +516,7 @@ async def test_fork_always_re_runs_nodes(
                },
                created_at=AnyStr(),
                parent_config=None,
+                interrupts=(),
            ),
        ]

@@ -858,6 +873,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        await app_w_interrupt.aupdate_state(
@@ -916,6 +932,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -1049,6 +1066,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # test state get/update methods with interrupt_before
@@ -1124,6 +1142,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        await app_w_interrupt.aupdate_state(
@@ -1182,6 +1201,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -1315,6 +1335,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # test re-invoke to continue with interrupt_before
@@ -1390,6 +1411,7 @@ async def test_conditional_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -1819,6 +1841,7 @@ async def test_conditional_graph_state(
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        async with assert_ctx_once():
@@ -1874,6 +1897,7 @@ async def test_conditional_graph_state(
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        async with assert_ctx_once():
@@ -1963,6 +1987,7 @@ async def test_conditional_graph_state(
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # test state get/update methods with interrupt_before
@@ -2031,6 +2056,7 @@ async def test_conditional_graph_state(
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        await app_w_interrupt.aupdate_state(
@@ -2085,6 +2111,7 @@ async def test_conditional_graph_state(
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -2172,6 +2199,7 @@ async def test_conditional_graph_state(
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )


@@ -2757,7 +2785,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    ),
                ]
            },
-            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0)),),
+            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0, False)),),
            next=("tools",),
            config={
                "configurable": {
@@ -2796,6 +2824,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # modify ai message
@@ -2822,7 +2851,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    ),
                ]
            },
-            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0)),),
+            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0, False)),),
            next=("tools",),
            config=tup.config,
            created_at=tup.checkpoint["ts"],
@@ -2854,6 +2883,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -2929,8 +2959,8 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                ]
            },
            tasks=(
-                PregelTask(AnyStr(), "tools", (PUSH, 0)),
-                PregelTask(AnyStr(), "tools", (PUSH, 1)),
+                PregelTask(AnyStr(), "tools", (PUSH, 0, False)),
+                PregelTask(AnyStr(), "tools", (PUSH, 1, False)),
            ),
            next=("tools", "tools"),
            config=tup.config,
@@ -2968,6 +2998,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        await app_w_interrupt.aupdate_state(
@@ -3022,6 +3053,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # interrupt before tools
@@ -3074,7 +3106,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    ),
                ]
            },
-            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0)),),
+            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0, False)),),
            next=("tools",),
            config=tup.config,
            created_at=tup.checkpoint["ts"],
@@ -3109,6 +3141,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # modify ai message
@@ -3135,7 +3168,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    ),
                ]
            },
-            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0)),),
+            tasks=(PregelTask(AnyStr(), "tools", (PUSH, 0, False)),),
            next=("tools",),
            config=tup.config,
            created_at=tup.checkpoint["ts"],
@@ -3167,6 +3200,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -3242,8 +3276,8 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                ]
            },
            tasks=(
-                PregelTask(AnyStr(), "tools", (PUSH, 0)),
-                PregelTask(AnyStr(), "tools", (PUSH, 1)),
+                PregelTask(AnyStr(), "tools", (PUSH, 0, False)),
+                PregelTask(AnyStr(), "tools", (PUSH, 1, False)),
            ),
            next=("tools", "tools"),
            config=tup.config,
@@ -3281,6 +3315,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        await app_w_interrupt.aupdate_state(
@@ -3335,6 +3370,7 @@ async def test_state_graph_packets(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )


@@ -3600,6 +3636,7 @@ async def test_message_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        # modify ai message
@@ -3654,6 +3691,7 @@ async def test_message_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        assert [c async for c in app_w_interrupt.astream(None, config)] == [
@@ -3744,6 +3782,7 @@ async def test_message_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )

        await app_w_interrupt.aupdate_state(
@@ -3792,6 +3831,7 @@ async def test_message_graph(checkpointer_name: str) -> None:
                    c async for c in app_w_interrupt.checkpointer.alist(config, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )


@@ -4131,6 +4171,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread1, debug=1) == {
@@ -4164,6 +4205,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )

        thread2 = {"configurable": {"thread_id": "2", "assistant_id": "a"}}
@@ -4199,6 +4241,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread2, debug=1) == {
@@ -4232,6 +4275,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )

        thread3 = {"configurable": {"thread_id": "3", "assistant_id": "b"}}
@@ -4267,6 +4311,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # update state
        await tool_two.aupdate_state(thread3, {"my_key": "key"})  # appends to my_key
@@ -4297,6 +4342,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread3, debug=1) == {
@@ -4330,6 +4376,7 @@ async def test_start_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )


@@ -4872,6 +4919,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread1, debug=1) == {
@@ -4904,6 +4952,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )

        thread2 = {"configurable": {"thread_id": "12"}}
@@ -4938,6 +4987,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread2, debug=1) == {
@@ -4970,6 +5020,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )

        tool_two = tool_two_graph.compile(
@@ -5012,6 +5063,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread1, debug=1) == {
@@ -5044,6 +5096,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )

        thread2 = {"configurable": {"thread_id": "22"}}
@@ -5078,6 +5131,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread2, debug=1) == {
@@ -5110,6 +5164,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )

        thread3 = {"configurable": {"thread_id": "23"}}
@@ -5132,6 +5187,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                "thread_id": "23",
            },
            parent_config=None,
+            interrupts=(),
        )
        # run from this point
        assert await tool_two.ainvoke(None, thread3) == {
@@ -5159,6 +5215,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                "thread_id": "23",
            },
            parent_config=(None if "shallow" in checkpointer_name else uconfig),
+            interrupts=(),
        )
        # resume, for same result as above
        assert await tool_two.ainvoke(None, thread3, debug=1) == {
@@ -5191,6 +5248,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )


@@ -5287,6 +5345,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        # now, get_state with subgraphs state
        assert await app.aget_state(config, subgraphs=True) == StateSnapshot(
@@ -5353,6 +5412,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                                }
                            }
                        ),
+                        interrupts=(),
                    ),
                ),
            ),
@@ -5383,6 +5443,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        # get_state_history returns outer graph checkpoints
        history = [c async for c in app.aget_state_history(config)]
@@ -5429,6 +5490,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        }
                    }
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "my value"},
@@ -5463,6 +5525,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        "checkpoint_id": AnyStr(),
                    }
                },
+                interrupts=(),
            ),
            StateSnapshot(
                values={},
@@ -5491,6 +5554,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                },
                created_at=AnyStr(),
                parent_config=None,
+                interrupts=(),
            ),
        ]

@@ -5550,6 +5614,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                    }
                ),
                tasks=(PregelTask(AnyStr(), "inner_2", (PULL, "inner_2")),),
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "hi my value"},
@@ -5598,6 +5663,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        },
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values={},
@@ -5634,6 +5700,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        result={"my_key": "hi my value"},
                    ),
                ),
+                interrupts=(),
            ),
        ]

@@ -5677,6 +5744,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        # test full history at the end
        actual_history = [c async for c in app.aget_state_history(config)]
@@ -5715,6 +5783,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        }
                    }
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "hi my value here and there"},
@@ -5749,6 +5818,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        "checkpoint_id": AnyStr(),
                    }
                },
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "hi my value"},
@@ -5789,6 +5859,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        "checkpoint_id": AnyStr(),
                    }
                },
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "my value"},
@@ -5823,6 +5894,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                        "checkpoint_id": AnyStr(),
                    }
                },
+                interrupts=(),
            ),
            StateSnapshot(
                values={},
@@ -5851,6 +5923,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                },
                created_at=AnyStr(),
                parent_config=None,
+                interrupts=(),
            ),
        ]
        if "shallow" in checkpointer_name:
@@ -5970,6 +6043,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        child_state = await app.aget_state(outer_state.tasks[0].state)
        assert child_state == StateSnapshot(
@@ -6031,6 +6105,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        grandchild_state = await app.aget_state(child_state.tasks[0].state)
        assert grandchild_state == StateSnapshot(
@@ -6095,6 +6170,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        # get state with subgraphs
        assert await app.aget_state(config, subgraphs=True) == StateSnapshot(
@@ -6186,6 +6262,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                                            }
                                        }
                                    ),
+                                    interrupts=(),
                                ),
                            ),
                        ),
@@ -6229,6 +6306,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                                }
                            }
                        ),
+                        interrupts=(),
                    ),
                ),
            ),
@@ -6259,6 +6337,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                    }
                }
            ),
+            interrupts=(),
        )
        # resume
        assert [c async for c in app.astream(None, config, subgraphs=True)] == [
@@ -6311,6 +6390,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                        }
                    }
                ),
+                interrupts=(),
            )
        )

@@ -6352,6 +6432,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                            "checkpoint_id": AnyStr(),
                        }
                    },
+                    interrupts=(),
                ),
                StateSnapshot(
                    values={"my_key": "hi my value here and there"},
@@ -6383,6 +6464,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                            id=AnyStr(), name="parent_2", path=(PULL, "parent_2")
                        ),
                    ),
+                    interrupts=(),
                ),
                StateSnapshot(
                    values={"my_key": "hi my value"},
@@ -6422,6 +6504,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                            "checkpoint_id": AnyStr(),
                        }
                    },
+                    interrupts=(),
                ),
                StateSnapshot(
                    values={"my_key": "my value"},
@@ -6453,6 +6536,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                            id=AnyStr(), name="parent_1", path=(PULL, "parent_1")
                        ),
                    ),
+                    interrupts=(),
                ),
                StateSnapshot(
                    values={},
@@ -6478,6 +6562,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                            id=AnyStr(), name="__start__", path=(PULL, "__start__")
                        ),
                    ),
+                    interrupts=(),
                ),
            ][0]
        )
@@ -6523,6 +6608,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                    }
                },
                tasks=(),
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "hi my value"},
@@ -6574,6 +6660,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                        result={"my_key": "hi my value here and there"},
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values={},
@@ -6610,6 +6697,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                        result={"my_key": "hi my value"},
                    ),
                ),
+                interrupts=(),
            ),
        ]
        # get grandchild graph history
@@ -6674,6 +6762,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                    }
                },
                tasks=(),
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "hi my value here"},
@@ -6737,6 +6826,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                        result={"my_key": "hi my value here and there"},
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values={"my_key": "hi my value"},
@@ -6800,6 +6890,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                        result={"my_key": "hi my value here"},
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values={},
@@ -6850,6 +6941,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                        result={"my_key": "hi my value"},
                    ),
                ),
+                interrupts=(),
            ),
        ]

@@ -7131,6 +7223,7 @@ async def test_weather_subgraph(
                    },
                ),
            ),
+            interrupts=(),
        )
        # confirm that list() delegates to alist() correctly
        assert await asyncio.to_thread(get_first_in_list) == state
@@ -7270,6 +7363,7 @@ async def test_weather_subgraph(
                                }
                            }
                        ),
+                        interrupts=(),
                        tasks=(
                            PregelTask(
                                id=AnyStr(),
@@ -7280,6 +7374,7 @@ async def test_weather_subgraph(
                    ),
                ),
            ),
+            interrupts=(),
        )
        await graph.aupdate_state(
            state.tasks[0].state.config,
@@ -7319,6 +7414,7 @@ async def test_weather_subgraph(
                    }
                }
            ),
+            interrupts=(),
            tasks=(
                PregelTask(
                    id=AnyStr(),
@@ -7385,6 +7481,7 @@ async def test_weather_subgraph(
                            }
                        ),
                        tasks=(),
+                        interrupts=(),
                    ),
                ),
            ),
@@ -2491,6 +2491,7 @@ def test_in_one_fan_out_state_graph_waiting_edge(
            "thread_id": "2",
        },
        parent_config=expected_parent_config,
+        interrupts=(),
    )

    assert [c for c in app_w_interrupt.stream(None, config, debug=1)] == [
@@ -3491,6 +3492,7 @@ def test_nested_graph_xray(snapshot: SnapshotAssertion) -> None:
    tool_two_graph.add_node("tool_two_fast", logic)
    tool_two_graph.set_conditional_entry_point(
        lambda s: "tool_two_slow" if s["market"] == "DE" else "tool_two_fast",
+        ["tool_two_slow", "tool_two_fast"],
        then=END,
    )
    tool_two = tool_two_graph.compile()
@@ -3499,7 +3501,9 @@ def test_nested_graph_xray(snapshot: SnapshotAssertion) -> None:
    graph.add_node("tool_one", logic)
    graph.add_node("tool_two", tool_two)
    graph.add_node("tool_three", logic)
-    graph.set_conditional_entry_point(lambda s: "tool_one", then=END)
+    graph.set_conditional_entry_point(
+        lambda s: "tool_one", ["tool_one", "tool_two", "tool_three"], then=END
+    )
    app = graph.compile()

    assert app.get_graph(xray=True).to_json() == snapshot
@@ -3703,7 +3707,16 @@ def test_subgraph_checkpoint_true_interrupt(

    assert graph.invoke(
        {"foo": "foo"}, config, checkpoint_during=checkpoint_during
-    ) == {"foo": "hi! foo"}
+    ) == {
+        "foo": "hi! foo",
+        "__interrupt__": [
+            Interrupt(
+                value="Provide baz value",
+                resumable=True,
+                ns=[AnyStr("node_2"), AnyStr("subgraph_node_1:")],
+            )
+        ],
+    }
    assert graph.get_state(config, subgraphs=True).tasks[0].state.values == {
        "bar": "hi! foo"
    }
@@ -5212,6 +5225,7 @@ def test_parent_command(request: pytest.FixtureRequest, checkpointer_name: str)
            }
        ),
        tasks=(),
+        interrupts=(),
    )


@@ -5413,7 +5427,15 @@ def test_interrupt_functional(

    config = {"configurable": {"thread_id": "1"}}
    # First run, interrupted at bar
-    graph.invoke({"a": ""}, config)
+    assert graph.invoke({"a": ""}, config) == {
+        "__interrupt__": [
+            Interrupt(
+                value="Provide value for bar:",
+                resumable=True,
+                ns=[AnyStr("graph:")],
+            )
+        ]
+    }
    # Resume with an answer
    res = graph.invoke(Command(resume="bar"), config)
    assert res == {"a": "foobar", "b": "bar"}
@@ -5444,7 +5466,15 @@ def test_interrupt_task_functional(

    config = {"configurable": {"thread_id": "1"}}
    # First run, interrupted at bar
-    assert not graph.invoke({"a": ""}, config)
+    assert graph.invoke({"a": ""}, config) == {
+        "__interrupt__": [
+            Interrupt(
+                value="Provide value for bar:",
+                resumable=True,
+                ns=[AnyStr("graph:"), AnyStr("bar:")],
+            ),
+        ]
+    }
    # Resume with an answer
    res = graph.invoke(Command(resume="bar"), config)
    assert res == {"a": "foobar"}
@@ -5460,9 +5490,17 @@ def test_interrupt_task_functional(
        return baz_result

    # First run, interrupted at bar
-    assert not graph.invoke({"a": ""}, config)
+    assert graph.invoke({"a": ""}, config) == {
+        "__interrupt__": [
+            Interrupt(
+                value="Provide value for bar:",
+                resumable=True,
+                ns=[AnyStr("graph:"), AnyStr("bar:")],
+            ),
+        ]
+    }
    # Provide resumes
-    assert not graph.invoke(Command(resume="bar"), config)
+    graph.invoke(Command(resume="bar"), config)
    assert graph.invoke(Command(resume="baz"), config) == {"a": "foobarbaz"}


@@ -6312,6 +6350,92 @@ def test_double_interrupt_subgraph(
    ]


+@pytest.mark.parametrize("checkpointer_name", ALL_CHECKPOINTERS_SYNC)
+def test_multi_resume(
+    request: pytest.FixtureRequest, checkpointer_name: str
+) -> None:
+    checkpointer = request.getfixturevalue(f"checkpointer_{checkpointer_name}")
+
+    class ChildState(TypedDict):
+        prompt: str
+        human_input: str
+        human_inputs: list[str]
+
+    def get_human_input(state: ChildState):
+        human_input = interrupt(state['prompt'])
+
+        return {
+            'human_input': human_input,
+            'human_inputs': [human_input],
+        }
+
+    child_graph = (
+        StateGraph(ChildState)
+        .add_node("get_human_input", get_human_input)
+        .add_edge(START, "get_human_input")
+        .add_edge("get_human_input", END)
+        .compile(checkpointer=checkpointer)
+    )
+
+    class ParentState(TypedDict):
+        prompts: list[str]
+        human_inputs: Annotated[list[str], operator.add]
+
+    def assign_workers(state: ParentState) -> list[Send]:
+        return [
+            Send(
+                "child_graph",
+                {'prompt': prompt},
+            )
+            for prompt in state['prompts']
+        ]
+
+    def cleanup(state: ParentState):
+        assert len(state['human_inputs']) == len(state["prompts"])
+
+    parent_graph = (
+        StateGraph(ParentState)
+        .add_node("child_graph", child_graph)
+        .add_node("cleanup", cleanup)
+        .add_conditional_edges(START, assign_workers, ["child_graph"])
+        .add_edge("child_graph", "cleanup")
+        .add_edge("cleanup", END)
+        .compile(checkpointer=checkpointer)
+    )
+
+    thread_config: RunnableConfig = {
+        'configurable': {
+            'thread_id': uuid.uuid4(),
+        },
+    }
+
+    prompts = ['a', 'b', 'c', 'd', 'e']
+
+    events = parent_graph.invoke(
+        {'prompts': prompts},
+        thread_config,
+        stream_mode='values'
+    )
+
+    assert len(events['__interrupt__']) == len(prompts)
+    interrupt_values = {i.value for i in events['__interrupt__']}
+    assert interrupt_values == set(prompts)
+
+    resume_map: dict[str, str] = {
+        i.interrupt_id: f"human input for prompt {i.value}"
+        for i in parent_graph.get_state(thread_config).interrupts
+    }
+
+    result = parent_graph.invoke(Command(resume=resume_map), thread_config)
+    assert result == {
+        'prompts': prompts,
+        'human_inputs': [
+            f"human input for prompt {prompt}"
+            for prompt in prompts
+        ],
+    }
+
+
 def test_sync_streaming_with_functional_api() -> None:
    """Test streaming with functional API.

@@ -6925,9 +7049,12 @@ def test_stream_mode_messages_command() -> None:
    def my_other_node(state):
        return Command(update={"messages": HumanMessage(content="bar")})

+    def my_last_node(state):
+        return [Command(update={"messages": HumanMessage(content="baz")})]
+
    graph = (
        StateGraph(MessagesState)
-        .add_sequence([my_node, my_other_node])
+        .add_sequence([my_node, my_other_node, my_last_node])
        .add_edge(START, "my_node")
        .compile()
    )
@@ -6959,6 +7086,16 @@ def test_stream_mode_messages_command() -> None:
                "langgraph_checkpoint_ns": AnyStr("my_other_node:"),
            },
        ),
+        (
+            _AnyIdHumanMessage(content="baz"),
+            {
+                "langgraph_step": 3,
+                "langgraph_node": "my_last_node",
+                "langgraph_triggers": ("branch:to:my_last_node",),
+                "langgraph_path": ("__pregel_pull", "my_last_node"),
+                "langgraph_checkpoint_ns": AnyStr("my_last_node:"),
+            },
+        ),
    ]


@@ -7334,10 +7471,27 @@ def test_interrupt_subgraph_reenter_checkpointer_true(
    )

    config = {"configurable": {"thread_id": "1"}}
-    assert parent.invoke({"foo": "", "counter": 0}, config) == {"foo": "", "counter": 0}
+    assert parent.invoke({"foo": "", "counter": 0}, config) == {
+        "foo": "",
+        "counter": 0,
+        "__interrupt__": [
+            Interrupt(
+                value="Provide value",
+                resumable=True,
+                ns=[AnyStr("call_subgraph"), AnyStr("subnode_2:")],
+            )
+        ],
+    }
    assert parent.invoke(Command(resume="bar"), config) == {
        "foo": "subgraph_2",
        "counter": 1,
+        "__interrupt__": [
+            Interrupt(
+                value="Provide value",
+                resumable=True,
+                ns=[AnyStr("call_subgraph"), AnyStr("subnode_2:")],
+            )
+        ],
    }
    assert parent.invoke(Command(resume="qux"), config) == {
        "foo": "subgraph_2|parent",
@@ -7362,6 +7516,13 @@ def test_interrupt_subgraph_reenter_checkpointer_true(
    assert parent.invoke({"foo": "meow", "counter": 0}, config) == {
        "foo": "meow",
        "counter": 0,
+        "__interrupt__": [
+            Interrupt(
+                value="Provide value",
+                resumable=True,
+                ns=[AnyStr("call_subgraph"), AnyStr("subnode_2:")],
+            )
+        ],
    }
    # confirm that we preserve the state values from the previous invocation
    assert bar_values == [None, "barbaz", "quxbaz"]
@@ -7865,6 +8026,30 @@ def test_bulk_state_updates(
        )


+def test_pregel_node_copy() -> None:
+    class State(TypedDict):
+        foo: str
+
+    def agent(state: State) -> State:
+        return {"foo": "agent"}
+
+    def tool(state: State) -> State:
+        return {"foo": "tool"}
+
+    graph = (
+        StateGraph(State)
+        .add_node("agent", agent)
+        .add_node("tool", tool)
+        .add_edge(START, "agent")
+        .add_edge("agent", "tool")
+        .compile()
+    )
+
+    graph.invoke({"foo": "input"}, {"configurable": {"thread_id": "1"}})
+    graph.copy()
+    graph.nodes["agent"].copy({})
+
+
@pytest.mark.parametrize("checkpointer_name", REGULAR_CHECKPOINTERS_SYNC)
 def test_update_as_input(
    request: pytest.FixtureRequest, checkpointer_name: str
@@ -8026,3 +8211,44 @@ def test_batch_update_as_input(
    ]

    assert new_history == history
+
+
+def test_migration_graph(snapshot: SnapshotAssertion) -> None:
+    from pydantic import BaseModel
+
+    class DummyState(BaseModel):
+        pass_count: int = 0
+
+    def increment_pass_count(state: DummyState):
+        state.pass_count += 1
+        return state
+
+    def route_b(state: DummyState):
+        if state.pass_count == 0:
+            return "X"
+        else:
+            return "Y"
+
+    migration_graph = StateGraph(DummyState)
+
+    migration_graph.add_node("B", increment_pass_count)
+    migration_graph.add_node("C", increment_pass_count)
+    migration_graph.add_node("D", increment_pass_count)
+
+    migration_graph.add_edge(START, "B")
+
+    migration_graph.add_conditional_edges(
+        "B",
+        route_b,
+        {
+            "X": "C",
+            "Y": "D",
+        },
+    )
+
+    migration_graph.add_edge("D", "B")
+    migration_graph.add_edge("C", END)
+
+    app = migration_graph.compile()
+
+    assert app.get_graph().draw_mermaid(with_styles=False) == snapshot
@@ -531,6 +531,9 @@ async def test_dynamic_interrupt(checkpointer_name: str) -> None:
    ) == {
        "my_key": "value",
        "market": "DE",
+        "__interrupt__": [
+            Interrupt(value="Just because...", resumable=True, ns=[AnyStr("tool_two:")])
+        ],
    }
    assert tool_two_node_count == 1, "interrupts aren't retried"
    assert len(tracer.runs) == 1
@@ -647,6 +650,13 @@ async def test_dynamic_interrupt(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(
+                Interrupt(
+                    value="Just because...",
+                    resumable=True,
+                    ns=[AnyStr("tool_two:")],
+                ),
+            ),
        )

        # clear the interrupt and next tasks
@@ -673,6 +683,7 @@ async def test_dynamic_interrupt(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(),
        )


@@ -713,6 +724,13 @@ async def test_dynamic_interrupt_subgraph(checkpointer_name: str) -> None:
    ) == {
        "my_key": "value",
        "market": "DE",
+        "__interrupt__": [
+            Interrupt(
+                value="Just because...",
+                resumable=True,
+                ns=[AnyStr("tool_two:"), AnyStr("do:")],
+            )
+        ],
    }
    assert tool_two_node_count == 1, "interrupts aren't retried"
    assert len(tracer.runs) == 1
@@ -838,6 +856,13 @@ async def test_dynamic_interrupt_subgraph(checkpointer_name: str) -> None:
                    c async for c in tool_two.checkpointer.alist(thread1root, limit=2)
                ][-1].config
            ),
+            interrupts=(
+                Interrupt(
+                    value="Just because...",
+                    resumable=True,
+                    ns=[AnyStr("tool_two:"), AnyStr("do:")],
+                ),
+            ),
        )

        # clear the interrupt and next tasks
@@ -864,6 +889,7 @@ async def test_dynamic_interrupt_subgraph(checkpointer_name: str) -> None:
                    c async for c in tool_two.checkpointer.alist(thread1root, limit=2)
                ][-1].config
            ),
+            interrupts=(),
        )


@@ -903,6 +929,9 @@ async def test_copy_checkpoint(checkpointer_name: str) -> None:
    ) == {
        "my_key": "value one",
        "market": "DE",
+        "__interrupt__": [
+            Interrupt(value="Just because...", resumable=True, ns=[AnyStr("tool_two:")])
+        ],
    }
    assert tool_two_node_count == 1, "interrupts aren't retried"
    assert len(tracer.runs) == 1
@@ -964,6 +993,13 @@ async def test_copy_checkpoint(checkpointer_name: str) -> None:
        ) == {
            "my_key": "value ⛰️ one",
            "market": "DE",
+            "__interrupt__": [
+                Interrupt(
+                    value="Just because...",
+                    resumable=True,
+                    ns=[AnyStr("tool_two:")],
+                )
+            ],
        }

        if "shallow" not in checkpointer_name:
@@ -992,7 +1028,7 @@ async def test_copy_checkpoint(checkpointer_name: str) -> None:
                PregelTask(
                    AnyStr(),
                    name="tool_one",
-                    path=("__pregel_push", 0),
+                    path=("__pregel_push", 0, False),
                    error=None,
                    interrupts=(),
                    state=None,
@@ -1027,6 +1063,13 @@ async def test_copy_checkpoint(checkpointer_name: str) -> None:
                    -1
                ].config
            ),
+            interrupts=(
+                Interrupt(
+                    value="Just because...",
+                    resumable=True,
+                    ns=[AnyStr("tool_two:")],
+                ),
+            ),
        )

        if "shallow" in checkpointer_name:
@@ -1044,7 +1087,7 @@ async def test_copy_checkpoint(checkpointer_name: str) -> None:
                PregelTask(
                    AnyStr(),
                    "tool_one",
-                    (PUSH, 0),
+                    (PUSH, 0, False),
                    result=None,
                ),
                PregelTask(
@@ -1068,6 +1111,7 @@ async def test_copy_checkpoint(checkpointer_name: str) -> None:
                    -1
                ].parent_config
            ),
+            interrupts=(),
        )


@@ -1108,13 +1152,29 @@ async def test_node_not_cancelled_on_other_node_interrupted(

        # writes from "awhile" are applied to last chunk
        assert await graph.ainvoke({"hello": "world"}, thread) == {
-            "hello": "world again"
+            "hello": "world again",
+            "__interrupt__": [
+                Interrupt(
+                    value="I am bad",
+                    resumable=True,
+                    ns=[AnyStr("bad:")],
+                )
+            ],
        }

        assert not inner_task_cancelled
        assert awhiles == 1

-        assert await graph.ainvoke(None, thread, debug=True) == {"hello": "world again"}
+        assert await graph.ainvoke(None, thread, debug=True) == {
+            "hello": "world again",
+            "__interrupt__": [
+                Interrupt(
+                    value="I am bad",
+                    resumable=True,
+                    ns=[AnyStr("bad:")],
+                )
+            ],
+        }

        assert not inner_task_cancelled
        assert awhiles == 1
@@ -2795,15 +2855,15 @@ async def test_send_dedupe_on_resume(
        thread1 = {"configurable": {"thread_id": "1"}}
        assert await graph.ainvoke(
            ["0"], thread1, checkpoint_during=checkpoint_during
-        ) == [
-            "0",
-            "1",
-            "3.1",
-            "2|Command(goto=Send(node='2', arg=3))",
-            "2|Command(goto=Send(node='flaky', arg=4))",
-            "3",
-            "2|3",
-        ]
+        ) == {
+            "__interrupt__": [
+                Interrupt(
+                    value="Bahh",
+                    resumable=False,
+                    ns=None,
+                ),
+            ],
+        }
        assert builder.nodes["2"].runnable.func.ticks == 3
        assert builder.nodes["flaky"].runnable.func.ticks == 1
        # resume execution
@@ -2864,6 +2924,7 @@ async def test_send_dedupe_on_resume(
                    }
                },
                tasks=(),
+                interrupts=(),
            ),
            StateSnapshot(
                values=[
@@ -2910,6 +2971,7 @@ async def test_send_dedupe_on_resume(
                        result=["3"],
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values=[
@@ -2952,7 +3014,7 @@ async def test_send_dedupe_on_resume(
                    PregelTask(
                        id=AnyStr(),
                        name="2",
-                        path=("__pregel_push", 0),
+                        path=("__pregel_push", 0, False),
                        error=None,
                        interrupts=(),
                        state=None,
@@ -2961,7 +3023,7 @@ async def test_send_dedupe_on_resume(
                    PregelTask(
                        id=AnyStr(),
                        name="flaky",
-                        path=("__pregel_push", 1),
+                        path=("__pregel_push", 1, False),
                        error=None,
                        interrupts=(Interrupt(value="Bahh", resumable=False, ns=None),),
                        state=None,
@@ -2977,6 +3039,7 @@ async def test_send_dedupe_on_resume(
                        result=["3"],
                    ),
                ),
+                interrupts=(Interrupt(value="Bahh", resumable=False, ns=None),),
            ),
            StateSnapshot(
                values=["0", "1"],
@@ -3007,7 +3070,7 @@ async def test_send_dedupe_on_resume(
                    PregelTask(
                        id=AnyStr(),
                        name="2",
-                        path=("__pregel_push", 0),
+                        path=("__pregel_push", 0, False),
                        error=None,
                        interrupts=(),
                        state=None,
@@ -3016,7 +3079,7 @@ async def test_send_dedupe_on_resume(
                    PregelTask(
                        id=AnyStr(),
                        name="2",
-                        path=("__pregel_push", 1),
+                        path=("__pregel_push", 1, False),
                        error=None,
                        interrupts=(),
                        state=None,
@@ -3032,6 +3095,7 @@ async def test_send_dedupe_on_resume(
                        result=["3.1"],
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values=["0"],
@@ -3069,6 +3133,7 @@ async def test_send_dedupe_on_resume(
                        result=["1"],
                    ),
                ),
+                interrupts=(),
            ),
            StateSnapshot(
                values=[],
@@ -3100,6 +3165,7 @@ async def test_send_dedupe_on_resume(
                        result=["0"],
                    ),
                ),
+                interrupts=(),
            ),
        ]
        if checkpoint_during:
@@ -3295,13 +3361,14 @@ async def test_send_react_interrupt(checkpointer_name: str) -> None:
                PregelTask(
                    id=AnyStr(),
                    name="foo",
-                    path=("__pregel_push", 0),
+                    path=("__pregel_push", 0, False),
                    error=None,
                    interrupts=(),
                    state=None,
                    result=None,
                ),
            ),
+            interrupts=(),
        )

        # remove the tool call, clearing the pending task
@@ -3355,6 +3422,7 @@ async def test_send_react_interrupt(checkpointer_name: str) -> None:
                }
            ),
            tasks=(),
+            interrupts=(),
        )

        # tool call not executed
@@ -3453,13 +3521,14 @@ async def test_send_react_interrupt(checkpointer_name: str) -> None:
                PregelTask(
                    id=AnyStr(),
                    name="foo",
-                    path=("__pregel_push", 0),
+                    path=("__pregel_push", 0, False),
                    error=None,
                    interrupts=(),
                    state=None,
                    result=None,
                ),
            ),
+            interrupts=(),
        )

        # replace the tool call, should clear previous send, create new one
@@ -3544,13 +3613,14 @@ async def test_send_react_interrupt(checkpointer_name: str) -> None:
                PregelTask(
                    id=AnyStr(),
                    name="foo",
-                    path=("__pregel_push", 0),
+                    path=("__pregel_push", 0, False),
                    error=None,
                    interrupts=(),
                    state=None,
                    result=None,
                ),
            ),
+            interrupts=(),
        )

        # prev tool call not executed, new tool call is
@@ -3761,13 +3831,14 @@ async def test_send_react_interrupt_control(
                PregelTask(
                    id=AnyStr(),
                    name="foo",
-                    path=("__pregel_push", 0),
+                    path=("__pregel_push", 0, False),
                    error=None,
                    interrupts=(),
                    state=None,
                    result=None,
                ),
            ),
+            interrupts=(),
        )

        # remove the tool call, clearing the pending task
@@ -3821,6 +3892,7 @@ async def test_send_react_interrupt_control(
                }
            ),
            tasks=(),
+            interrupts=(),
        )

        # tool call not executed
@@ -4901,6 +4973,7 @@ async def test_in_one_fan_out_state_graph_waiting_edge_custom_state_class(
                    }
                }
            ),
+            interrupts=(),
        )

        async with assert_ctx_once():
@@ -5555,7 +5628,16 @@ async def test_subgraph_checkpoint_true_interrupt(

        assert await graph.ainvoke(
            {"foo": "foo"}, config, checkpoint_during=checkpoint_during
-        ) == {"foo": "hi! foo"}
+        ) == {
+            "foo": "hi! foo",
+            "__interrupt__": [
+                Interrupt(
+                    value="Provide baz value",
+                    resumable=True,
+                    ns=[AnyStr("node_2"), AnyStr("subgraph_node_1:")],
+                )
+            ],
+        }
        assert (await graph.aget_state(config, subgraphs=True)).tasks[
            0
        ].state.values == {"bar": "hi! foo"}
@@ -6590,6 +6672,7 @@ async def test_parent_command(checkpointer_name: str) -> None:
                }
            ),
            tasks=(),
+            interrupts=(),
        )


@@ -6828,7 +6911,15 @@ async def test_interrupt_task_functional(checkpointer_name: str) -> None:

        config = {"configurable": {"thread_id": "1"}}
        # First run, interrupted at bar
-        await graph.ainvoke({"a": ""}, config)
+        assert await graph.ainvoke({"a": ""}, config) == {
+            "__interrupt__": [
+                Interrupt(
+                    value="Provide value for bar:",
+                    resumable=True,
+                    ns=[AnyStr("graph:"), AnyStr("bar:")],
+                ),
+            ]
+        }
        # Resume with an answer
        res = await graph.ainvoke(Command(resume="bar"), config)
        assert res == {"a": "foobar"}
@@ -8104,10 +8195,24 @@ async def test_interrupt_subgraph_reenter_checkpointer_true(
        assert await parent.ainvoke({"foo": "", "counter": 0}, config) == {
            "foo": "",
            "counter": 0,
+            "__interrupt__": [
+                Interrupt(
+                    value="Provide value",
+                    resumable=True,
+                    ns=[AnyStr("call_subgraph"), AnyStr("subnode_2:")],
+                )
+            ],
        }
        assert await parent.ainvoke(Command(resume="bar"), config) == {
            "foo": "subgraph_2",
            "counter": 1,
+            "__interrupt__": [
+                Interrupt(
+                    value="Provide value",
+                    resumable=True,
+                    ns=[AnyStr("call_subgraph"), AnyStr("subnode_2")],
+                )
+            ],
        }
        assert await parent.ainvoke(Command(resume="qux"), config) == {
            "foo": "subgraph_2|parent",
@@ -8132,6 +8237,13 @@ async def test_interrupt_subgraph_reenter_checkpointer_true(
        assert await parent.ainvoke({"foo": "meow", "counter": 0}, config) == {
            "foo": "meow",
            "counter": 0,
+            "__interrupt__": [
+                Interrupt(
+                    value="Provide value",
+                    resumable=True,
+                    ns=[AnyStr("call_subgraph"), AnyStr("subnode_2:")],
+                )
+            ],
        }
        # confirm that we preserve the state values from the previous invocation
        assert bar_values == [None, "barbaz", "quxbaz"]
@@ -8160,7 +8272,15 @@ async def test_handles_multiple_interrupts_from_tasks() -> None:
    config = {"configurable": {"thread_id": "1"}}

    result = await program.ainvoke("this is ignored", config=config)
-    assert result is None
+    assert result == {
+        "__interrupt__": [
+            Interrupt(
+                value="Hey do you want to add James?",
+                resumable=True,
+                ns=[AnyStr("program:"), AnyStr("add_participant:")],
+            ),
+        ]
+    }

    state = await program.aget_state(config=config)
    assert len(state.tasks[0].interrupts) == 1
@@ -8172,7 +8292,76 @@ async def test_handles_multiple_interrupts_from_tasks() -> None:
    assert task_interrupt.value == "Hey do you want to add James?"

    result = await program.ainvoke(Command(resume=True), config=config)
-    assert result is None
+    assert result == {
+        "__interrupt__": [
+            Interrupt(
+                value="Hey do you want to add Will?",
+                resumable=True,
+                ns=[AnyStr("program:"), AnyStr("add_participant:")],
+            ),
+        ]
+    }
+
+    state = await program.aget_state(config=config)
+    assert len(state.tasks[0].interrupts) == 1
+    task_interrupt = state.tasks[0].interrupts[0]
+    assert task_interrupt.resumable is True
+    assert len(task_interrupt.ns) == 2
+    assert task_interrupt.ns[0].startswith("program:")
+    assert task_interrupt.ns[1].startswith("add_participant:")
+    assert task_interrupt.value == "Hey do you want to add Will?"
+
+    result = await program.ainvoke(Command(resume=True), config=config)
+    assert result is not None
+    assert len(result) == 2
+    assert result[0] == "Added James!"
+    assert result[1] == "Added Will!"
+
+
+@NEEDS_CONTEXTVARS
+async def test_interrupts_in_tasks_surfaced_once() -> None:
+    @task
+    async def add_participant(name: str) -> str:
+        feedback = interrupt(f"Hey do you want to add {name}?")
+
+        if feedback is False:
+            return f"The user changed their mind and doesn't want to add {name}!"
+
+        if feedback is True:
+            return f"Added {name}!"
+
+        raise ValueError("Invalid feedback")
+
+    @entrypoint(checkpointer=MemorySaver())
+    async def program(_state: Any) -> list[str]:
+        first = await add_participant("James")
+        second = await add_participant("Will")
+        return [first, second]
+
+    config = {"configurable": {"thread_id": "1"}}
+
+    interrupts = [
+        e
+        async for e in program.astream("this is ignored", config=config)
+        if "__interrupt__" in e
+    ]
+    assert len(interrupts) == 1
+
+    state = await program.aget_state(config=config)
+    assert len(state.tasks[0].interrupts) == 1
+    task_interrupt = state.tasks[0].interrupts[0]
+    assert task_interrupt.resumable is True
+    assert len(task_interrupt.ns) == 2
+    assert task_interrupt.ns[0].startswith("program:")
+    assert task_interrupt.ns[1].startswith("add_participant:")
+    assert task_interrupt.value == "Hey do you want to add James?"
+
+    interrupts = [
+        e
+        async for e in program.astream(Command(resume=True), config=config)
+        if "__interrupt__" in e
+    ]
+    assert len(interrupts) == 1

    state = await program.aget_state(config=config)
    assert len(state.tasks[0].interrupts) == 1
@@ -1,6 +1,7 @@
 from unittest.mock import AsyncMock, MagicMock

 import pytest
+from langchain_core.runnables import RunnableConfig
 from langchain_core.runnables.graph import (
    Edge as DrawableEdge,
 )
@@ -182,6 +183,7 @@ def test_get_state():
        created_at="timestamp",
        parent_config=None,
        tasks=(),
+        interrupts=(),
    )


@@ -239,6 +241,7 @@ async def test_aget_state():
            }
        },
        tasks=(),
+        interrupts=(),
    )


@@ -289,6 +292,7 @@ def test_get_state_history():
        created_at="timestamp",
        parent_config=None,
        tasks=(),
+        interrupts=(),
    )


@@ -342,6 +346,7 @@ async def test_aget_state_history():
        created_at="timestamp",
        parent_config=None,
        tasks=(),
+        interrupts=(),
    )


@@ -861,3 +866,100 @@ async def test_langgraph_cloud_integration():
    remote_pregel.graph_id = "fe096781-5601-53d2-b2f6-0d3403f7e9ca"  # must be UUID
    graph = await remote_pregel.aget_graph(xray=True)
    print("graph:", graph)
+
+
+def test_sanitize_config():
+    # Create a test instance
+    remote = RemoteGraph("test-graph")
+
+    # Test 1: Basic config with primitives
+    basic_config: RunnableConfig = {
+        "recursion_limit": 10,
+        "tags": ["tag1", "tag2"],
+        "metadata": {"str_key": "value", "int_key": 42, "bool_key": True},
+        "configurable": {"param1": "value1", "param2": 123},
+    }
+    sanitized = remote._sanitize_config(basic_config)
+    assert sanitized["recursion_limit"] == 10
+    assert sanitized["tags"] == ["tag1", "tag2"]
+    assert sanitized["metadata"] == {
+        "str_key": "value",
+        "int_key": 42,
+        "bool_key": True,
+    }
+    assert sanitized["configurable"] == {"param1": "value1", "param2": 123}
+
+    # Test 2: Config with non-string tags and complex metadata
+    complex_config: RunnableConfig = {
+        "tags": ["tag1", 123, {"obj": "tag"}, "tag2"],  # Only string tags should remain
+        "metadata": {
+            "nested": {
+                "key": "value",
+                "num": 42,
+                "invalid": lambda x: x,
+            },  # Last item should be removed
+            "list": [1, 2, "three"],
+            "invalid": lambda x: x,  # Should be removed
+            "tuple": (1, 2, 3),  # Should be converted to list
+        },
+    }
+    sanitized = remote._sanitize_config(complex_config)
+    assert sanitized["tags"] == ["tag1", "tag2"]
+    assert sanitized["metadata"] == {
+        "nested": {"key": "value", "num": 42},
+        "list": [1, 2, "three"],
+        "tuple": [1, 2, 3],
+    }
+    assert "invalid" not in sanitized["metadata"]
+
+    # Test 3: Config with configurable fields that should be dropped
+    config_with_drops: RunnableConfig = {
+        "configurable": {
+            "normal_param": "value",
+            "checkpoint_map": {"key": "value"},  # Should be dropped
+            "checkpoint_id": "123",  # Should be dropped
+            "checkpoint_ns": "ns",  # Should be dropped
+        }
+    }
+    sanitized = remote._sanitize_config(config_with_drops)
+    assert sanitized["configurable"] == {"normal_param": "value"}
+    assert "checkpoint_map" not in sanitized["configurable"]
+    assert "checkpoint_id" not in sanitized["configurable"]
+    assert "checkpoint_ns" not in sanitized["configurable"]
+
+    # Test 4: Empty config
+    empty_config: RunnableConfig = {}
+    sanitized = remote._sanitize_config(empty_config)
+    assert sanitized == {}
+
+    # Test 5: Config with non-string keys in configurable
+    invalid_keys_config: RunnableConfig = {
+        "configurable": {
+            "valid": "value",
+            123: "invalid",  # Should be dropped
+            ("tuple", "key"): "invalid",  # Should be dropped
+        }
+    }
+    sanitized = remote._sanitize_config(invalid_keys_config)
+    assert sanitized["configurable"] == {"valid": "value"}
+
+    # Test 6: Deeply nested structures
+    nested_config: RunnableConfig = {
+        "metadata": {
+            "level1": {
+                "level2": {
+                    "level3": {
+                        "str": "value",
+                        "list": [1, [2, [3]]],
+                        "dict": {"a": {"b": {"c": "d"}}},
+                    }
+                }
+            }
+        }
+    }
+    sanitized = remote._sanitize_config(nested_config)
+    assert sanitized["metadata"]["level1"]["level2"]["level3"]["str"] == "value"
+    assert sanitized["metadata"]["level1"]["level2"]["level3"]["list"] == [1, [2, [3]]]
+    assert sanitized["metadata"]["level1"]["level2"]["level3"]["dict"] == {
+        "a": {"b": {"c": "d"}}
+    }
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "aiosqlite"
@@ -26,6 +26,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -38,6 +39,7 @@ description = "High level compatibility layer for multiple asynchronous event lo
 optional = false
 python-versions = ">=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "anyio-4.8.0-py3-none-any.whl", hash = "sha256:b5011f270ab5eb0abf13385f851315585cc37ef330dd88e27ec3d34d651fd47a"},
    {file = "anyio-4.8.0.tar.gz", hash = "sha256:1d9fe889df5212298c0c0723fa20479d1b94883a2df44bd3897aa91083316f7a"},
@@ -51,7 +53,7 @@ typing_extensions = {version = ">=4.5", markers = "python_version < \"3.13\""}

 [package.extras]
 doc = ["Sphinx (>=7.4,<8.0)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx_rtd_theme"]
-test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "trustme", "truststore (>=0.9.1)", "uvloop (>=0.21)"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "trustme", "truststore (>=0.9.1) ; python_version >= \"3.10\"", "uvloop (>=0.21) ; platform_python_implementation == \"CPython\" and platform_system != \"Windows\" and python_version < \"3.14\""]
 trio = ["trio (>=0.26.1)"]

 [[package]]
@@ -61,6 +63,7 @@ description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "certifi-2025.1.31-py3-none-any.whl", hash = "sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe"},
    {file = "certifi-2025.1.31.tar.gz", hash = "sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651"},
@@ -73,7 +76,7 @@ description = "Foreign Function Interface for Python calling C code."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation == \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation == \"PyPy\""
 files = [
    {file = "cffi-1.17.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:df8b1c11f177bc2313ec4b2d46baec87a5f3e71fc8b45dab2ee7cae86d9aba14"},
    {file = "cffi-1.17.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8f2cdc858323644ab277e9bb925ad72ae0e67f69e804f4898c070998d50b1a67"},
@@ -154,6 +157,7 @@ description = "The Real First Universal Charset Detector. Open, modern and activ
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "charset_normalizer-3.4.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:91b36a978b5ae0ee86c394f5a54d6ef44db1de0815eb43de826d41d21e4af3de"},
    {file = "charset_normalizer-3.4.1-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:7461baadb4dc00fd9e0acbe254e3d7d2112e7f92ced2adc96e54ef6501c5f176"},
@@ -264,7 +268,7 @@ files = [
 [package.extras]
 dev = ["Pygments", "build", "chardet", "pre-commit", "pytest", "pytest-cov", "pytest-dependency", "ruff", "tomli", "twine"]
 hard-encoding-detection = ["chardet"]
-toml = ["tomli"]
+toml = ["tomli ; python_version < \"3.11\""]
 types = ["chardet (>=5.1.0)", "mypy", "pytest", "pytest-cov", "pytest-dependency"]

 [[package]]
@@ -298,31 +302,33 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.7"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "httpcore-1.0.7-py3-none-any.whl", hash = "sha256:a3fff8f43dc260d5bd363d9f9cf1830fa3a458b332856f34282de498ed420edd"},
-    {file = "httpcore-1.0.7.tar.gz", hash = "sha256:8551cb62a169ec7162ac7be8d4817d561f60e08eaa485234898414bb5a8a0b4c"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
@@ -337,6 +343,7 @@ description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
@@ -349,7 +356,7 @@ httpcore = "==1.*"
 idna = "*"

 [package.extras]
-brotli = ["brotli", "brotlicffi"]
+brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi ; platform_python_implementation != \"CPython\""]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
@@ -362,6 +369,7 @@ description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "idna-3.10-py3-none-any.whl", hash = "sha256:946d195a0d259cbba61165e88e65941f16e9b36ea6ddb97f00452bae8b1287d3"},
    {file = "idna-3.10.tar.gz", hash = "sha256:12f65c9b470abda6dc35cf8e63cc574b1c52b11df2c86030af0ac09b01b13ea9"},
@@ -389,6 +397,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -404,6 +413,7 @@ description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -416,6 +426,7 @@ description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langchain_core-0.3.40-py3-none-any.whl", hash = "sha256:9f31358741f10a13db8531e8288b8a5ae91904018c5c2e6f739d6645a98fca03"},
    {file = "langchain_core-0.3.40.tar.gz", hash = "sha256:893a238b38491967c804662c1ec7c3e6ebaf223d1125331249c3cf3862ff2746"},
@@ -435,19 +446,19 @@ typing-extensions = ">=4.7"

 [[package]]
 name = "langgraph"
-version = "0.3.18"
+version = "0.4.0"
 description = "Building stateful, multi-actor applications with LLMs"
 optional = false
-python-versions = ">=3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.1,<0.4"
+langchain-core = {version = ">=0.1", markers = "python_version < \"4.0\""}
 langgraph-checkpoint = "^2.0.10"
-langgraph-prebuilt = ">=0.1.1,<0.2"
-langgraph-sdk = "^0.1.42"
+langgraph-prebuilt = {version = ">=0.1.8", markers = "python_version < \"4.0\""}
+langgraph-sdk = {version = ">=0.1.42", markers = "python_version < \"4.0\""}
 xxhash = "^3.5.0"

 [package.source]
@@ -456,16 +467,16 @@ url = "../langgraph"

 [[package]]
 name = "langgraph-checkpoint"
-version = "2.0.21"
+version = "2.0.25"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.2.38,<0.4"
+langchain-core = {version = ">=0.2.38", markers = "python_version < \"4.0\""}
 ormsgpack = "^1.8.0"

 [package.source]
@@ -474,10 +485,10 @@ url = "../checkpoint"

 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.19"
+version = "2.0.21"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = []
 develop = true
@@ -497,7 +508,7 @@ name = "langgraph-checkpoint-sqlite"
 version = "2.0.6"
 description = "Library with a SQLite implementation of LangGraph checkpoint saver."
 optional = false
-python-versions = "^3.9.0"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = []
 develop = true
@@ -517,6 +528,7 @@ description = "SDK for interacting with LangGraph API"
 optional = false
 python-versions = "<4.0.0,>=3.9.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langgraph_sdk-0.1.53-py3-none-any.whl", hash = "sha256:4fab62caad73661ffe4c3ababedcd0d7bfaaba986bee4416b9c28948458a3af5"},
    {file = "langgraph_sdk-0.1.53.tar.gz", hash = "sha256:12906ed965905fa27e0c28d9fa07dc6fd89e6895ff321ff049fdf3965d057cc4"},
@@ -533,6 +545,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langsmith-0.3.11-py3-none-any.whl", hash = "sha256:0cca22737ef07d3b038a437c141deda37e00add56022582680188b681bec095e"},
    {file = "langsmith-0.3.11.tar.gz", hash = "sha256:ddf29d24352e99de79c9618aaf95679214324e146c5d3d9475a7ddd2870018b1"},
@@ -708,7 +721,7 @@ files = [
    {file = "orjson-3.10.15-cp39-cp39-win_amd64.whl", hash = "sha256:efcf6c735c3d22ef60c4aa27a5238f1a477df85e9b15f2142f9d669beb2d13fd"},
    {file = "orjson-3.10.15.tar.gz", hash = "sha256:05ca7fe452a2e9d8d9d706a2984c95b9c2ebc5db417ce0b7a49b91d50642a23e"},
 ]
-markers = {main = "platform_python_implementation != \"PyPy\""}
+markers = {main = "python_version < \"4.0\" and platform_python_implementation != \"PyPy\""}

 [[package]]
 name = "ormsgpack"
@@ -757,6 +770,7 @@ files = [
    {file = "packaging-24.2-py3-none-any.whl", hash = "sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759"},
    {file = "packaging-24.2.tar.gz", hash = "sha256:c228a6dc5e932d346bc5739379109d49e8853dd8223571c7c5b55260edc0b97f"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "pluggy"
@@ -791,8 +805,8 @@ typing-extensions = {version = ">=4.6", markers = "python_version < \"3.13\""}
 tzdata = {version = "*", markers = "sys_platform == \"win32\""}

 [package.extras]
-binary = ["psycopg-binary (==3.2.5)"]
-c = ["psycopg-c (==3.2.5)"]
+binary = ["psycopg-binary (==3.2.5) ; implementation_name != \"pypy\""]
+c = ["psycopg-c (==3.2.5) ; implementation_name != \"pypy\""]
 dev = ["ast-comments (>=1.1.2)", "black (>=24.1.0)", "codespell (>=2.2)", "dnspython (>=2.1)", "flake8 (>=4.0)", "isort-psycopg", "isort[colors] (>=6.0)", "mypy (>=1.14)", "pre-commit (>=4.0.1)", "types-setuptools (>=57.4)", "wheel (>=0.37)"]
 docs = ["Sphinx (>=5.0)", "furo (==2022.6.21)", "sphinx-autobuild (>=2021.3.14)", "sphinx-autodoc-typehints (>=1.12)"]
 pool = ["psycopg-pool"]
@@ -820,7 +834,7 @@ description = "C parser in Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation == \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation == \"PyPy\""
 files = [
    {file = "pycparser-2.22-py3-none-any.whl", hash = "sha256:c3702b6d3dd8c7abc1afa565d7e63d53a1d0bd86cdc24edd75470f4de499cfcc"},
    {file = "pycparser-2.22.tar.gz", hash = "sha256:491c8be9c040f5390f5bf44a5b07752bd07f56edf992381b05c701439eec10f6"},
@@ -833,6 +847,7 @@ description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic-2.10.6-py3-none-any.whl", hash = "sha256:427d664bf0b8a2b34ff5dd0f5a18df00591adcee7198fbd71981054cef37b584"},
    {file = "pydantic-2.10.6.tar.gz", hash = "sha256:ca5daa827cce33de7a42be142548b0096bf05a7e7b365aebfa5f8eeec7128236"},
@@ -845,7 +860,7 @@ typing-extensions = ">=4.12.2"

 [package.extras]
 email = ["email-validator (>=2.0.0)"]
-timezone = ["tzdata"]
+timezone = ["tzdata ; python_version >= \"3.9\" and platform_system == \"Windows\""]

 [[package]]
 name = "pydantic-core"
@@ -854,6 +869,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.27.2-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:2d367ca20b2f14095a8f4fa1210f5a7b78b8a20009ecced6b12818f455b1e9fa"},
    {file = "pydantic_core-2.27.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:491a2b73db93fab69731eaee494f320faa4e093dbed776be1a829c2eb222c34c"},
@@ -1027,6 +1043,7 @@ description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pytest_watcher-0.4.3-py3-none-any.whl", hash = "sha256:d59b1e1396f33a65ea4949b713d6884637755d641646960056a90b267c3460f9"},
    {file = "pytest_watcher-0.4.3.tar.gz", hash = "sha256:0cb0e4661648c8c0ff2b2d25efa5a8e421784b9e4c60fcecbf9b7c30b2d731b3"},
@@ -1043,6 +1060,7 @@ description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:0a9a2848a5b7feac301353437eb7d5957887edbf81d56e903999a75a3d743086"},
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:29717114e51c84ddfba879543fb232a6ed60086602313ca38cce623c1d62cfbf"},
@@ -1106,6 +1124,7 @@ description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -1128,6 +1147,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -1171,6 +1191,7 @@ description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -1183,6 +1204,7 @@ description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "tenacity-9.0.0-py3-none-any.whl", hash = "sha256:93de0c98785b27fcf659856aa9f54bfbd399e29969b0621bc7f762bd441b4539"},
    {file = "tenacity-9.0.0.tar.gz", hash = "sha256:807f37ca97d62aa361264d497b0e31e92b8027044942bfa756160d908320d73b"},
@@ -1246,6 +1268,7 @@ files = [
    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
 ]
+markers = {main = "python_version < \"4.0\""}

 [[package]]
 name = "tzdata"
@@ -1267,13 +1290,14 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 optional = false
 python-versions = ">=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "urllib3-2.3.0-py3-none-any.whl", hash = "sha256:1cee9ad369867bfdbbb48b7dd50374c0967a0bb7710050facf0dd6911440e3df"},
    {file = "urllib3-2.3.0.tar.gz", hash = "sha256:f8c5449b3cf0861679ce7e0503c7b44b5ec981bec0d1d3795a07f1ba96f0204d"},
 ]

 [package.extras]
-brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+brotli = ["brotli (>=1.0.9) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=0.8.0) ; platform_python_implementation != \"CPython\""]
 h2 = ["h2 (>=4,<5)"]
 socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
 zstd = ["zstandard (>=0.18.0)"]
@@ -1285,6 +1309,7 @@ description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.9"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "watchdog-6.0.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:d1cdb490583ebd691c012b3d6dae011000fe42edb7a82ece80965b42abd61f26"},
    {file = "watchdog-6.0.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bc64ab3bdb6a04d69d4023b29422170b74681784ffb9463ed4870cf2f3e66112"},
@@ -1461,6 +1486,7 @@ description = "Zstandard bindings for Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "zstandard-0.23.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bf0a05b6059c0528477fba9054d09179beb63744355cab9f38059548fedd46a9"},
    {file = "zstandard-0.23.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:fc9ca1c9718cb3b06634c7c8dec57d24e9438b2aa9a0f02b8bb36bf478538880"},
@@ -1569,5 +1595,5 @@ cffi = ["cffi (>=1.11)"]

 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9.0,<4.0"
-content-hash = "af5dc04219a8b3bce05705a0664ff424b40b426e47575d0a8a36415563553942"
+python-versions = ">=3.9"
+content-hash = "c37de4853982e1ef8ef0077e6369390b7f2ad8f674dc9467bd6d4b8617655858"
@@ -9,9 +9,9 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 packages = [{ include = "langgraph" }]

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
+python = ">=3.9"
 langgraph-checkpoint = "^2.0.10"
-langchain-core = ">=0.2.43,<0.4.0,!=0.3.0,!=0.3.1,!=0.3.2,!=0.3.3,!=0.3.4,!=0.3.5,!=0.3.6,!=0.3.7,!=0.3.8,!=0.3.9,!=0.3.10,!=0.3.11,!=0.3.12,!=0.3.13,!=0.3.14,!=0.3.15,!=0.3.16,!=0.3.17,!=0.3.18,!=0.3.19,!=0.3.20,!=0.3.21,!=0.3.22"
+langchain-core = { version = ">=0.3.22", python = "<4.0" }

 [tool.poetry.group.dev.dependencies]
 ruff = "^0.6.2"
@@ -19,7 +19,7 @@ codespell = "^2.2.0"
 pytest = "^7.2.1"
 pytest-asyncio = "^0.21.1"
 pytest-mock = "^3.11.1"
-pytest-watcher = "^0.4.1"
+pytest-watcher = { version = ">=0.4.1", python = "<4.0" }
 mypy = "^1.10.0"
 langgraph = {path = "../langgraph", develop = true}
 langgraph-checkpoint = {path = "../checkpoint", develop = true}
@@ -672,7 +672,8 @@ def test_react_agent_parallel_tool_calls(
    for event in agent.stream(
        {"messages": [("user", query)]}, config, stream_mode="values"
    ):
-        message_types.append([message.type for message in event["messages"]])
+        if messages := event.get("messages"):
+            message_types.append([m.type for m in messages])

    if version == "v1":
        assert message_types == [
@@ -691,7 +692,8 @@ def test_react_agent_parallel_tool_calls(
    for event in agent.stream(
        Command(resume={"data": "Hello"}), config, stream_mode="values"
    ):
-        message_types.append([message.type for message in event["messages"]])
+        if messages := event.get("messages"):
+            message_types.append([m.type for m in messages])

    assert message_types == [
        ["human", "ai"],
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "aiokafka"
@@ -60,6 +60,7 @@ description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"},
    {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"},
@@ -72,6 +73,7 @@ description = "High level compatibility layer for multiple asynchronous event lo
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "anyio-4.4.0-py3-none-any.whl", hash = "sha256:c1b2d8f46a8a812513012e1107cb0e68c17159a7a594208005a57dc776e1bdc7"},
    {file = "anyio-4.4.0.tar.gz", hash = "sha256:5aadc6a1bbb7cdb0bede386cac5e2940f5e2ff3aa20277e991cf028e0585ce94"},
@@ -85,7 +87,7 @@ typing-extensions = {version = ">=4.1", markers = "python_version < \"3.11\""}

 [package.extras]
 doc = ["Sphinx (>=7)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx-rtd-theme"]
-test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "uvloop (>=0.17)"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "uvloop (>=0.17) ; platform_python_implementation == \"CPython\" and platform_system != \"Windows\""]
 trio = ["trio (>=0.23)"]

 [[package]]
@@ -107,6 +109,7 @@ description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "certifi-2024.8.30-py3-none-any.whl", hash = "sha256:922820b53db7a7257ffbda3f597266d435245903d80737e34f8a45ff3e3230d8"},
    {file = "certifi-2024.8.30.tar.gz", hash = "sha256:bec941d2aa8195e248a60b31ff9f0558284cf01a52591ceda73ea9afffd69fd9"},
@@ -119,7 +122,7 @@ description = "Foreign Function Interface for Python calling C code."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation == \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation == \"PyPy\""
 files = [
    {file = "cffi-1.17.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:df8b1c11f177bc2313ec4b2d46baec87a5f3e71fc8b45dab2ee7cae86d9aba14"},
    {file = "cffi-1.17.1-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8f2cdc858323644ab277e9bb925ad72ae0e67f69e804f4898c070998d50b1a67"},
@@ -200,6 +203,7 @@ description = "The Real First Universal Charset Detector. Open, modern and activ
 optional = false
 python-versions = ">=3.7.0"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "charset-normalizer-3.3.2.tar.gz", hash = "sha256:f30c3cb33b24454a82faecaf01b19c18562b1e89558fb6c56de4d9118a032fd5"},
    {file = "charset_normalizer-3.3.2-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:25baf083bf6f6b341f4121c2f3c548875ee6f5339300e08be3f2b2ba1721cdd3"},
@@ -308,7 +312,7 @@ files = [
 [package.extras]
 dev = ["Pygments", "build", "chardet", "pre-commit", "pytest", "pytest-cov", "pytest-dependency", "ruff", "tomli", "twine"]
 hard-encoding-detection = ["chardet"]
-toml = ["tomli"]
+toml = ["tomli ; python_version < \"3.11\""]
 types = ["chardet (>=5.1.0)", "mypy", "pytest", "pytest-cov", "pytest-dependency"]

 [[package]]
@@ -459,37 +463,39 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.5"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "httpcore-1.0.5-py3-none-any.whl", hash = "sha256:421f18bac248b25d310f3cacd198d55b8e6125c107797b609ff9b7a6ba7991b5"},
-    {file = "httpcore-1.0.5.tar.gz", hash = "sha256:34a38e2f9291467ee3b44e89dd52615370e152954ba21721378a87b2960f7a61"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
-trio = ["trio (>=0.22.0,<0.26.0)"]
+trio = ["trio (>=0.22.0,<1.0)"]

 [[package]]
 name = "httpx"
@@ -498,6 +504,7 @@ description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "httpx-0.27.2-py3-none-any.whl", hash = "sha256:7bb2708e112d8fdd7829cd4243970f0c223274051cb35ee80c03301ee29a3df0"},
    {file = "httpx-0.27.2.tar.gz", hash = "sha256:f7c2be1d2f3c3c3160d441802406b206c2b76f5947b11115e6df10c6c65e66c2"},
@@ -511,7 +518,7 @@ idna = "*"
 sniffio = "*"

 [package.extras]
-brotli = ["brotli", "brotlicffi"]
+brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi ; platform_python_implementation != \"CPython\""]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
@@ -524,6 +531,7 @@ description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.6"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "idna-3.8-py3-none-any.whl", hash = "sha256:050b4e5baadcd44d760cedbd2b8e639f2ff89bbc7a5730fcc662954303377aac"},
    {file = "idna-3.8.tar.gz", hash = "sha256:d838c2c0ed6fced7693d5e8ab8e734d5f8fda53a039c0164afb0b82e771e3603"},
@@ -548,6 +556,7 @@ description = "Apply JSON-Patches (RFC 6902)"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*, !=3.6.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
    {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -563,6 +572,7 @@ description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
    {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -594,6 +604,7 @@ description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langchain_core-0.3.48-py3-none-any.whl", hash = "sha256:21e4fe84262b9c7ad8aefe7816439ede130893f8a64b8c965cd9695c2be91c73"},
    {file = "langchain_core-0.3.48.tar.gz", hash = "sha256:be4b2fe36d8a11fb4b6b13e0808b12aea9f25e345624ffafe1d606afb6059f21"},
@@ -613,19 +624,19 @@ typing-extensions = ">=4.7"

 [[package]]
 name = "langgraph"
-version = "0.3.18"
+version = "0.4.0"
 description = "Building stateful, multi-actor applications with LLMs"
 optional = false
-python-versions = ">=3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.1,<0.4"
+langchain-core = {version = ">=0.1", markers = "python_version < \"4.0\""}
 langgraph-checkpoint = "^2.0.10"
-langgraph-prebuilt = ">=0.1.1,<0.2"
-langgraph-sdk = "^0.1.42"
+langgraph-prebuilt = {version = ">=0.1.8", markers = "python_version < \"4.0\""}
+langgraph-sdk = {version = ">=0.1.42", markers = "python_version < \"4.0\""}
 xxhash = "^3.5.0"

 [package.source]
@@ -634,16 +645,16 @@ url = "../langgraph"

 [[package]]
 name = "langgraph-checkpoint"
-version = "2.0.21"
+version = "2.0.25"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["main", "dev"]
 files = []
 develop = true

 [package.dependencies]
-langchain-core = ">=0.2.38,<0.4"
+langchain-core = {version = ">=0.2.38", markers = "python_version < \"4.0\""}
 ormsgpack = "^1.8.0"

 [package.source]
@@ -652,10 +663,10 @@ url = "../checkpoint"

 [[package]]
 name = "langgraph-checkpoint-postgres"
-version = "2.0.19"
+version = "2.0.21"
 description = "Library with a Postgres implementation of LangGraph checkpoint saver."
 optional = false
-python-versions = "^3.9.0,<4.0"
+python-versions = ">=3.9"
 groups = ["dev"]
 files = []
 develop = true
@@ -672,14 +683,15 @@ url = "../checkpoint-postgres"

 [[package]]
 name = "langgraph-prebuilt"
-version = "0.1.4"
+version = "0.1.8"
 description = "Library with high-level APIs for creating and executing LangGraph agents and tools."
 optional = false
 python-versions = "<4.0.0,>=3.9.0"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
-    {file = "langgraph_prebuilt-0.1.4-py3-none-any.whl", hash = "sha256:23110997d2747cfb7ca2649ca78c6fc950a6646a5c96b7e9d8b7d19221f896a1"},
-    {file = "langgraph_prebuilt-0.1.4.tar.gz", hash = "sha256:61a5543c6d1be3d54bf53147763b4510d6ab2989347a16d1e9c366ef4dbcf0d8"},
+    {file = "langgraph_prebuilt-0.1.8-py3-none-any.whl", hash = "sha256:ae97b828ae00be2cefec503423aa782e1bff165e9b94592e224da132f2526968"},
+    {file = "langgraph_prebuilt-0.1.8.tar.gz", hash = "sha256:4de7659151829b2b955b6798df6800e580e617782c15c2c5b29b139697491831"},
 ]

 [package.dependencies]
@@ -693,6 +705,7 @@ description = "SDK for interacting with LangGraph API"
 optional = false
 python-versions = "<4.0.0,>=3.9.0"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langgraph_sdk-0.1.58-py3-none-any.whl", hash = "sha256:65f88cf5582da0c316714dc475126fa03c5f74d72bc0b9221dd42649de8e23d4"},
    {file = "langgraph_sdk-0.1.58.tar.gz", hash = "sha256:ef8b0e4c08af8c7efd3919497879c87a3627806b51e4ba5e8b06e0717e3d44cd"},
@@ -709,6 +722,7 @@ description = "Client library to connect to the LangSmith LLM Tracing and Evalua
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "langsmith-0.3.18-py3-none-any.whl", hash = "sha256:7ad65ec26084312a039885ef625ae72a69ad089818b64bacf7ce6daff672353a"},
    {file = "langsmith-0.3.18.tar.gz", hash = "sha256:18ff2d8f2e77b375485e4fb3d0dbf7b30fabbd438c7347c3534470e9b7d187b8"},
@@ -940,8 +954,8 @@ typing-extensions = ">=4.4"
 tzdata = {version = "*", markers = "sys_platform == \"win32\""}

 [package.extras]
-binary = ["psycopg-binary (==3.2.1)"]
-c = ["psycopg-c (==3.2.1)"]
+binary = ["psycopg-binary (==3.2.1) ; implementation_name != \"pypy\""]
+c = ["psycopg-c (==3.2.1) ; implementation_name != \"pypy\""]
 dev = ["ast-comments (>=1.1.2)", "black (>=24.1.0)", "codespell (>=2.2)", "dnspython (>=2.1)", "flake8 (>=4.0)", "mypy (>=1.6)", "types-setuptools (>=57.4)", "wheel (>=0.37)"]
 docs = ["Sphinx (>=5.0)", "furo (==2022.6.21)", "sphinx-autobuild (>=2021.3.14)", "sphinx-autodoc-typehints (>=1.12)"]
 pool = ["psycopg-pool"]
@@ -969,7 +983,7 @@ description = "C parser in Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "platform_python_implementation == \"PyPy\""
+markers = "python_version < \"4.0\" and platform_python_implementation == \"PyPy\""
 files = [
    {file = "pycparser-2.22-py3-none-any.whl", hash = "sha256:c3702b6d3dd8c7abc1afa565d7e63d53a1d0bd86cdc24edd75470f4de499cfcc"},
    {file = "pycparser-2.22.tar.gz", hash = "sha256:491c8be9c040f5390f5bf44a5b07752bd07f56edf992381b05c701439eec10f6"},
@@ -982,6 +996,7 @@ description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic-2.9.0-py3-none-any.whl", hash = "sha256:f66a7073abd93214a20c5f7b32d56843137a7a2e70d02111f3be287035c45370"},
    {file = "pydantic-2.9.0.tar.gz", hash = "sha256:c7a8a9fdf7d100afa49647eae340e2d23efa382466a8d177efcd1381e9be5598"},
@@ -1006,6 +1021,7 @@ description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pydantic_core-2.23.2-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:7d0324a35ab436c9d768753cbc3c47a865a2cbc0757066cb864747baa61f6ece"},
    {file = "pydantic_core-2.23.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:276ae78153a94b664e700ac362587c73b84399bd1145e135287513442e7dfbc7"},
@@ -1149,6 +1165,7 @@ description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "pytest_watcher-0.4.2-py3-none-any.whl", hash = "sha256:a43949ba67dd8d7e1fd0de5eea44a999081f0aec9f93b4e744264b4c6a3d9bbe"},
    {file = "pytest_watcher-0.4.2.tar.gz", hash = "sha256:7b292f025ca19617cd7567c228c6187b5087f2da9e4d2cf6e144e5764a0471b0"},
@@ -1165,6 +1182,7 @@ description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:0a9a2848a5b7feac301353437eb7d5957887edbf81d56e903999a75a3d743086"},
    {file = "PyYAML-6.0.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:29717114e51c84ddfba879543fb232a6ed60086602313ca38cce623c1d62cfbf"},
@@ -1228,6 +1246,7 @@ description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
    {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -1250,6 +1269,7 @@ description = "A utility belt for advanced users of python-requests"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "requests-toolbelt-1.0.0.tar.gz", hash = "sha256:7681a0a3d047012b5bdc0ee37d7f8f07ebe76ab08caeccfc3921ce23c88d5bc6"},
    {file = "requests_toolbelt-1.0.0-py2.py3-none-any.whl", hash = "sha256:cccfdd665f0a24fcf4726e690f65639d272bb0637b9b92dfd91a5568ccf6bd06"},
@@ -1293,6 +1313,7 @@ description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -1305,6 +1326,7 @@ description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "tenacity-8.5.0-py3-none-any.whl", hash = "sha256:b594c2a5945830c267ce6b79a166228323ed52718f30302c1359836112346687"},
    {file = "tenacity-8.5.0.tar.gz", hash = "sha256:8bc6c0c8a09b31e6cad13c47afbed1a567518250a9a171418582ed8d9c20ca78"},
@@ -1350,6 +1372,7 @@ files = [
    {file = "tzdata-2024.1-py2.py3-none-any.whl", hash = "sha256:9068bc196136463f5245e51efda838afa15aaeca9903f49050dfa2679db4d252"},
    {file = "tzdata-2024.1.tar.gz", hash = "sha256:2674120f8d891909751c38abcdfd386ac0a5a1127954fbc332af6b5ceae07efd"},
 ]
+markers = {main = "python_version < \"4.0\"", dev = "python_version < \"4.0\" or sys_platform == \"win32\""}

 [[package]]
 name = "urllib3"
@@ -1358,13 +1381,14 @@ description = "HTTP library with thread-safe connection pooling, file post, and
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "urllib3-2.2.2-py3-none-any.whl", hash = "sha256:a448b2f64d686155468037e1ace9f2d2199776e17f0a46610480d311f73e3472"},
    {file = "urllib3-2.2.2.tar.gz", hash = "sha256:dd505485549a7a552833da5e6063639d0d177c04f23bc3864e41e5dc5f612168"},
 ]

 [package.extras]
-brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+brotli = ["brotli (>=1.0.9) ; platform_python_implementation == \"CPython\"", "brotlicffi (>=0.8.0) ; platform_python_implementation != \"CPython\""]
 h2 = ["h2 (>=4,<5)"]
 socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
 zstd = ["zstandard (>=0.18.0)"]
@@ -1376,6 +1400,7 @@ description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "watchdog-4.0.1-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:da2dfdaa8006eb6a71051795856bedd97e5b03e57da96f98e375682c48850645"},
    {file = "watchdog-4.0.1-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:e93f451f2dfa433d97765ca2634628b789b49ba8b504fdde5837cdcf25fdb53b"},
@@ -1554,6 +1579,7 @@ description = "Zstandard bindings for Python"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
+markers = "python_version < \"4.0\""
 files = [
    {file = "zstandard-0.23.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bf0a05b6059c0528477fba9054d09179beb63744355cab9f38059548fedd46a9"},
    {file = "zstandard-0.23.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:fc9ca1c9718cb3b06634c7c8dec57d24e9438b2aa9a0f02b8bb36bf478538880"},
@@ -1662,5 +1688,5 @@ cffi = ["cffi (>=1.11)"]

 [metadata]
 lock-version = "2.1"
-python-versions = "^3.9.0,<4.0"
-content-hash = "f7462771335bead50dfffa50691d16e8a8e39680e4b3f6e9f8850d4239383b0e"
+python-versions = ">=3.9"
+content-hash = "4ed29bfd01db66f6675a1b5f89a21a51547e45681287afd0460af4dbf56230bf"
@@ -9,18 +9,18 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 packages = [{ include = "langgraph" }]

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
+python = ">=3.9"
 orjson = "^3.10.7"
 crc32c = "^2.7.post1"
 aiokafka = "^0.11.0"
-langgraph = ">=0.2.19,<0.4.0"
+langgraph = ">=0.2.19"

 [tool.poetry.group.dev.dependencies]
 ruff = "^0.6.2"
 codespell = "^2.2.0"
 pytest = "^7.2.1"
 pytest-mock = "^3.11.1"
-pytest-watcher = "^0.4.1"
+pytest-watcher = { version = ">=0.4.1", python = "<4.0" }
 mypy = "^1.10.0"
 langgraph = {path = "../langgraph", develop = true}
 langgraph-checkpoint-postgres = {path = "../checkpoint-postgres", develop = true}
@@ -126,7 +126,7 @@ interface LoadExternalComponentProps
  meta?: unknown;

  /** Fallback to be rendered when the component is loading */
-  fallback?: React.ReactNode;
+  fallback?: React.ReactNode | Record<string, React.ReactNode>;

  /**
   * Map of components that can be rendered directly without fetching the UI code
@@ -135,6 +135,33 @@ interface LoadExternalComponentProps
  components?: Record<string, React.FunctionComponent | React.ComponentClass>;
 }

+const isIterable = (value: unknown): value is Iterable<unknown> =>
+  value != null && typeof value === "object" && Symbol.iterator in value;
+
+const isPromise = (value: unknown): value is Promise<unknown> =>
+  value != null &&
+  typeof value === "object" &&
+  "then" in value &&
+  typeof value.then === "function";
+
+const isReactNode = (value: unknown): value is React.ReactNode => {
+  if (React.isValidElement(value)) return true;
+  if (value == null) return true;
+  if (
+    typeof value === "string" ||
+    typeof value === "number" ||
+    typeof value === "bigint" ||
+    typeof value === "boolean"
+  ) {
+    return true;
+  }
+
+  if (isIterable(value)) return true;
+  if (isPromise(value)) return true;
+
+  return false;
+};
+
 export function LoadExternalComponent({
  stream,
  namespace,
@@ -157,6 +184,12 @@ export function LoadExternalComponent({
  const clientComponent = components?.[message.name];
  const hasClientComponent = clientComponent != null;

+  const fallbackComponent = isReactNode(fallback)
+    ? fallback
+    : typeof fallback === "object" && fallback != null
+      ? fallback?.[message.name]
+      : null;
+
  const uiNamespace = namespace ?? stream.assistantId;
  const uiClient = stream.client["~ui"];
  React.useEffect(() => {
@@ -192,7 +225,7 @@ export function LoadExternalComponent({
              React.createElement(state.comp, message.props),
              state.target,
            )
-          : fallback}
+          : fallbackComponent}
      </UseStreamContext.Provider>
    </>
  );
@@ -215,10 +248,6 @@ export function experimental_loadShare(name: string, module: unknown) {

 export function bootstrapUiContext() {
  if (typeof window === "undefined") {
-    console.warn(
-      "Attempting to bootstrap UI context outside of browser environment. " +
-        "Avoid importing from `@langchain/langgraph-sdk/react-ui` in server context.",
-    );
    return;
  }

@@ -414,10 +414,15 @@ export interface UseStreamOptions<
   */
  assistantId: string;

+  /**
+   * Client used to send requests.
+   */
+  client?: Client;
+
  /**
   * The URL of the API to use.
   */
-  apiUrl: ClientConfig["apiUrl"];
+  apiUrl?: ClientConfig["apiUrl"];

  /**
   * The API key to use.
@@ -476,6 +481,18 @@ export interface UseStreamOptions<
   */
  onMetadataEvent?: (data: MetadataStreamEvent["data"]) => void;

+  /**
+   * Callback that is called when a LangChain event is received.
+   * @see https://langchain-ai.github.io/langgraph/cloud/how-tos/stream_events/#stream-graph-in-events-mode for more details.
+   */
+  onLangChainEvent?: (data: EventsStreamEvent["data"]) => void;
+
+  /**
+   * Callback that is called when a debug event is received.
+   * @internal This API is experimental and subject to change.
+   */
+  onDebugEvent?: (data: DebugStreamEvent["data"]) => void;
+
  /**
   * The ID of the thread to fetch history and current values from.
   */
@@ -629,6 +646,7 @@ export function useStream<

  const client = useMemo(
    () =>
+      options.client ??
      new Client({
        apiUrl: options.apiUrl,
        apiKey: options.apiKey,
@@ -636,6 +654,7 @@ export function useStream<
        defaultHeaders: options.defaultHeaders,
      }),
    [
+      options.client,
      options.apiKey,
      options.apiUrl,
      options.callerOptions,
@@ -672,13 +691,22 @@ export function useStream<

  const hasUpdateListener = options.onUpdateEvent != null;
  const hasCustomListener = options.onCustomEvent != null;
+  const hasLangChainListener = options.onLangChainEvent != null;
+  const hasDebugListener = options.onDebugEvent != null;

  const callbackStreamMode = useMemo(() => {
-    const modes: Exclude<StreamMode, "debug" | "messages">[] = [];
+    const modes: Exclude<StreamMode, "messages">[] = [];
    if (hasUpdateListener) modes.push("updates");
    if (hasCustomListener) modes.push("custom");
+    if (hasLangChainListener) modes.push("events");
+    if (hasDebugListener) modes.push("debug");
    return modes;
-  }, [hasUpdateListener, hasCustomListener]);
+  }, [
+    hasUpdateListener,
+    hasCustomListener,
+    hasLangChainListener,
+    hasDebugListener,
+  ]);

  const clearCallbackRef = useRef<() => void>(null!);
  clearCallbackRef.current = () => {
@@ -863,6 +891,8 @@ export function useStream<
              }),
          });
        if (event === "metadata") options.onMetadataEvent?.(data);
+        if (event === "events") options.onLangChainEvent?.(data);
+        if (event === "debug") options.onDebugEvent?.(data);

        if (event === "values") setStreamValues(data);
        if (event === "messages") {
@@ -134,7 +134,20 @@ export type SubgraphDebugStreamEvent = AsSubgraph<DebugStreamEvent>;
 /**
 * Stream event with events occurring during execution.
 */
-export type EventsStreamEvent = { event: "events"; data: unknown };
+export type EventsStreamEvent = {
+  event: "events";
+  data: {
+    event:
+      | `on_${"chat_model" | "llm" | "chain" | "tool" | "retriever" | "prompt"}_${"start" | "stream" | "end"}`
+      | (string & {});
+    name: string;
+    tags: string[];
+    run_id: string;
+    metadata: Record<string, unknown>;
+    parent_ids: string[];
+    data: unknown;
+  };
+};

 /** @internal */
 export type SubgraphEventsStreamEvent = AsSubgraph<EventsStreamEvent>;
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.1.2 and should not be changed by hand.

 [[package]]
 name = "anyio"
@@ -6,6 +6,7 @@ version = "4.7.0"
 description = "High level compatibility layer for multiple asynchronous event loop implementations"
 optional = false
 python-versions = ">=3.9"
+groups = ["main"]
 files = [
    {file = "anyio-4.7.0-py3-none-any.whl", hash = "sha256:ea60c3723ab42ba6fff7e8ccb0488c898ec538ff4df1f1d5e642c3601d07e352"},
    {file = "anyio-4.7.0.tar.gz", hash = "sha256:2f834749c602966b7d456a7567cafcb309f96482b5081d14ac93ccd457f9dd48"},
@@ -19,7 +20,7 @@ typing_extensions = {version = ">=4.5", markers = "python_version < \"3.13\""}

 [package.extras]
 doc = ["Sphinx (>=7.4,<8.0)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx_rtd_theme"]
-test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "truststore (>=0.9.1)", "uvloop (>=0.21)"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "truststore (>=0.9.1) ; python_version >= \"3.10\"", "uvloop (>=0.21) ; platform_python_implementation == \"CPython\" and platform_system != \"Windows\""]
 trio = ["trio (>=0.26.1)"]

 [[package]]
@@ -28,6 +29,7 @@ version = "2024.8.30"
 description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
+groups = ["main"]
 files = [
    {file = "certifi-2024.8.30-py3-none-any.whl", hash = "sha256:922820b53db7a7257ffbda3f597266d435245903d80737e34f8a45ff3e3230d8"},
    {file = "certifi-2024.8.30.tar.gz", hash = "sha256:bec941d2aa8195e248a60b31ff9f0558284cf01a52591ceda73ea9afffd69fd9"},
@@ -39,6 +41,7 @@ version = "2.3.0"
 description = "Codespell"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
    {file = "codespell-2.3.0-py3-none-any.whl", hash = "sha256:a9c7cef2501c9cfede2110fd6d4e5e62296920efe9abfb84648df866e47f58d1"},
    {file = "codespell-2.3.0.tar.gz", hash = "sha256:360c7d10f75e65f67bad720af7007e1060a5d395670ec11a7ed1fed9dd17471f"},
@@ -47,7 +50,7 @@ files = [
 [package.extras]
 dev = ["Pygments", "build", "chardet", "pre-commit", "pytest", "pytest-cov", "pytest-dependency", "ruff", "tomli", "twine"]
 hard-encoding-detection = ["chardet"]
-toml = ["tomli"]
+toml = ["tomli ; python_version < \"3.11\""]
 types = ["chardet (>=5.1.0)", "mypy", "pytest", "pytest-cov", "pytest-dependency"]

 [[package]]
@@ -56,6 +59,7 @@ version = "0.4.6"
 description = "Cross-platform colored terminal text."
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
+groups = ["dev"]
 files = [
    {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
    {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -67,6 +71,7 @@ version = "0.6.2"
 description = "Pythonic argument parser, that will make you smile"
 optional = false
 python-versions = "*"
+groups = ["dev"]
 files = [
    {file = "docopt-0.6.2.tar.gz", hash = "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"},
 ]
@@ -77,6 +82,8 @@ version = "1.2.2"
 description = "Backport of PEP 654 (exception groups)"
 optional = false
 python-versions = ">=3.7"
+groups = ["main", "dev"]
+markers = "python_version < \"3.11\""
 files = [
    {file = "exceptiongroup-1.2.2-py3-none-any.whl", hash = "sha256:3111b9d131c238bec2f8f516e123e14ba243563fb135d3fe885990585aa7795b"},
    {file = "exceptiongroup-1.2.2.tar.gz", hash = "sha256:47c2edf7c6738fafb49fd34290706d1a1a2f4d1c6df275526b62cbb4aa5393cc"},
@@ -87,29 +94,31 @@ test = ["pytest (>=6)"]

 [[package]]
 name = "h11"
-version = "0.14.0"
+version = "0.16.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
-    {file = "h11-0.14.0.tar.gz", hash = "sha256:8f19fbbe99e72420ff35c00b27a34cb9937e902a8b810e2c88300c6f0a3b699d"},
+    {file = "h11-0.16.0-py3-none-any.whl", hash = "sha256:63cf8bbe7522de3bf65932fda1d9c2772064ffb3dae62d55932da54b31cb6c86"},
+    {file = "h11-0.16.0.tar.gz", hash = "sha256:4e35b956cf45792e4caa5885e69fba00bdbc6ffafbfa020300e549b208ee5ff1"},
 ]

 [[package]]
 name = "httpcore"
-version = "1.0.7"
+version = "1.0.9"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
-    {file = "httpcore-1.0.7-py3-none-any.whl", hash = "sha256:a3fff8f43dc260d5bd363d9f9cf1830fa3a458b332856f34282de498ed420edd"},
-    {file = "httpcore-1.0.7.tar.gz", hash = "sha256:8551cb62a169ec7162ac7be8d4817d561f60e08eaa485234898414bb5a8a0b4c"},
+    {file = "httpcore-1.0.9-py3-none-any.whl", hash = "sha256:2d400746a40668fc9dec9810239072b40b4484b640a8c38fd654a024c7a1bf55"},
+    {file = "httpcore-1.0.9.tar.gz", hash = "sha256:6e34463af53fd2ab5d807f399a9b45ea31c3dfa2276f15a2c3f00afff6e176e8"},
 ]

 [package.dependencies]
 certifi = "*"
-h11 = ">=0.13,<0.15"
+h11 = ">=0.16"

 [package.extras]
 asyncio = ["anyio (>=4.0,<5.0)"]
@@ -123,6 +132,7 @@ version = "0.28.1"
 description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
    {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
@@ -135,7 +145,7 @@ httpcore = "==1.*"
 idna = "*"

 [package.extras]
-brotli = ["brotli", "brotlicffi"]
+brotli = ["brotli ; platform_python_implementation == \"CPython\"", "brotlicffi ; platform_python_implementation != \"CPython\""]
 cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
 http2 = ["h2 (>=3,<5)"]
 socks = ["socksio (==1.*)"]
@@ -147,6 +157,7 @@ version = "3.10"
 description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.6"
+groups = ["main"]
 files = [
    {file = "idna-3.10-py3-none-any.whl", hash = "sha256:946d195a0d259cbba61165e88e65941f16e9b36ea6ddb97f00452bae8b1287d3"},
    {file = "idna-3.10.tar.gz", hash = "sha256:12f65c9b470abda6dc35cf8e63cc574b1c52b11df2c86030af0ac09b01b13ea9"},
@@ -161,6 +172,7 @@ version = "2.0.0"
 description = "brain-dead simple config-ini parsing"
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
    {file = "iniconfig-2.0.0-py3-none-any.whl", hash = "sha256:b6a85871a79d2e3b22d2d1b94ac2824226a63c6b741c88f7ae975f18b6778374"},
    {file = "iniconfig-2.0.0.tar.gz", hash = "sha256:2d91e135bf72d31a410b17c16da610a82cb55f6b0477d1a902134b24a455b8b3"},
@@ -172,6 +184,7 @@ version = "1.13.0"
 description = "Optional static typing for Python"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
    {file = "mypy-1.13.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:6607e0f1dd1fb7f0aca14d936d13fd19eba5e17e1cd2a14f808fa5f8f6d8f60a"},
    {file = "mypy-1.13.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:8a21be69bd26fa81b1f80a61ee7ab05b076c674d9b18fb56239d72e21d9f4c80"},
@@ -225,6 +238,7 @@ version = "1.0.0"
 description = "Type system extensions for programs checked with the mypy type checker."
 optional = false
 python-versions = ">=3.5"
+groups = ["dev"]
 files = [
    {file = "mypy_extensions-1.0.0-py3-none-any.whl", hash = "sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d"},
    {file = "mypy_extensions-1.0.0.tar.gz", hash = "sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782"},
@@ -236,6 +250,7 @@ version = "3.10.12"
 description = "Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
    {file = "orjson-3.10.12-cp310-cp310-macosx_10_15_x86_64.macosx_11_0_arm64.macosx_10_15_universal2.whl", hash = "sha256:ece01a7ec71d9940cc654c482907a6b65df27251255097629d0dea781f255c6d"},
    {file = "orjson-3.10.12-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c34ec9aebc04f11f4b978dd6caf697a2df2dd9b47d35aa4cc606cabcb9df69d7"},
@@ -320,6 +335,7 @@ version = "24.2"
 description = "Core utilities for Python packages"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
    {file = "packaging-24.2-py3-none-any.whl", hash = "sha256:09abb1bccd265c01f4a3aa3f7a7db064b36514d2cba19a2f694fe6150451a759"},
    {file = "packaging-24.2.tar.gz", hash = "sha256:c228a6dc5e932d346bc5739379109d49e8853dd8223571c7c5b55260edc0b97f"},
@@ -331,6 +347,7 @@ version = "1.5.0"
 description = "plugin and hook calling mechanisms for python"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
    {file = "pluggy-1.5.0-py3-none-any.whl", hash = "sha256:44e1ad92c8ca002de6377e165f3e0f1be63266ab4d554740532335b9d75ea669"},
    {file = "pluggy-1.5.0.tar.gz", hash = "sha256:2cffa88e94fdc978c4c574f15f9e59b7f4201d439195c3715ca9e2486f1d0cf1"},
@@ -346,6 +363,7 @@ version = "7.4.4"
 description = "pytest: simple powerful testing with Python"
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
    {file = "pytest-7.4.4-py3-none-any.whl", hash = "sha256:b090cdf5ed60bf4c45261be03239c2c1c22df034fbffe691abe93cd80cea01d8"},
    {file = "pytest-7.4.4.tar.gz", hash = "sha256:2cf0005922c6ace4a3e2ec8b4080eb0d9753fdc93107415332f50ce9e7994280"},
@@ -368,6 +386,7 @@ version = "0.21.2"
 description = "Pytest support for asyncio"
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
    {file = "pytest_asyncio-0.21.2-py3-none-any.whl", hash = "sha256:ab664c88bb7998f711d8039cacd4884da6430886ae8bbd4eded552ed2004f16b"},
    {file = "pytest_asyncio-0.21.2.tar.gz", hash = "sha256:d67738fc232b94b326b9d060750beb16e0074210b98dd8b58a5239fa2a154f45"},
@@ -386,6 +405,7 @@ version = "3.14.0"
 description = "Thin-wrapper around the mock package for easier use with pytest"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
    {file = "pytest-mock-3.14.0.tar.gz", hash = "sha256:2719255a1efeceadbc056d6bf3df3d1c5015530fb40cf347c0f9afac88410bd0"},
    {file = "pytest_mock-3.14.0-py3-none-any.whl", hash = "sha256:0b72c38033392a5f4621342fe11e9219ac11ec9d375f8e2a0c164539e0d70f6f"},
@@ -403,6 +423,7 @@ version = "4.2.0"
 description = "Local continuous test runner with pytest and watchdog."
 optional = false
 python-versions = "*"
+groups = ["dev"]
 files = [
    {file = "pytest-watch-4.2.0.tar.gz", hash = "sha256:06136f03d5b361718b8d0d234042f7b2f203910d8568f63df2f866b547b3d4b9"},
 ]
@@ -419,6 +440,7 @@ version = "0.6.9"
 description = "An extremely fast Python linter and code formatter, written in Rust."
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
    {file = "ruff-0.6.9-py3-none-linux_armv6l.whl", hash = "sha256:064df58d84ccc0ac0fcd63bc3090b251d90e2a372558c0f057c3f75ed73e1ccd"},
    {file = "ruff-0.6.9-py3-none-macosx_10_12_x86_64.whl", hash = "sha256:140d4b5c9f5fc7a7b074908a78ab8d384dd7f6510402267bc76c37195c02a7ec"},
@@ -446,6 +468,7 @@ version = "1.3.1"
 description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
+groups = ["main"]
 files = [
    {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
    {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"},
@@ -457,6 +480,8 @@ version = "2.2.1"
 description = "A lil' TOML parser"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
+markers = "python_version < \"3.11\""
 files = [
    {file = "tomli-2.2.1-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:678e4fa69e4575eb77d103de3df8a895e1591b48e740211bd1067378c69e8249"},
    {file = "tomli-2.2.1-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:023aa114dd824ade0100497eb2318602af309e5a55595f76b626d6d9f3b7b0a6"},
@@ -498,10 +523,12 @@ version = "4.12.2"
 description = "Backported and Experimental Type Hints for Python 3.8+"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
 ]
+markers = {main = "python_version < \"3.13\""}

 [[package]]
 name = "watchdog"
@@ -509,6 +536,7 @@ version = "6.0.0"
 description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.9"
+groups = ["dev"]
 files = [
    {file = "watchdog-6.0.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:d1cdb490583ebd691c012b3d6dae011000fe42edb7a82ece80965b42abd61f26"},
    {file = "watchdog-6.0.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bc64ab3bdb6a04d69d4023b29422170b74681784ffb9463ed4870cf2f3e66112"},
@@ -546,6 +574,6 @@ files = [
 watchmedo = ["PyYAML (>=3.10)"]

 [metadata]
-lock-version = "2.0"
-python-versions = "^3.9.0,<4.0"
-content-hash = "1262a6148df18cc44ade00466b6e0f8305897a460eea370c8de649d8d20cd7a2"
+lock-version = "2.1"
+python-versions = ">=3.9"
+content-hash = "0611170a82c3626098bc6040704b999cf1a85ca1494ecb61028487d4bd6a18f7"
@@ -9,7 +9,7 @@ repository = "https://www.github.com/langchain-ai/langgraph"
 packages = [{ include = "langgraph_sdk" }]

 [tool.poetry.dependencies]
-python = "^3.9.0,<4.0"
+python = ">=3.9"
 httpx = ">=0.25.2"
 orjson = ">=3.10.1"
Author	SHA1	Message	Date
David DuongandGitHub	9ffa6371e0	feat(sdk-js): add onLangChainEvent and onDebugEvent to useStream (#4453 )	2025-04-29 15:40:09 +02:00
David DuongandGitHub	4d1e5ab71f	feat(sdk-js): pass the client instead of apiKey/apiUrl (#4452 )	2025-04-29 15:38:47 +02:00
Sydney RunkleandGitHub	c0d6524ec7	release: v0.4.0 (#4447 )	2025-04-29 09:35:04 -04:00
Tat Dat Duong	8ad5331c89	feat(sdk-js): add onLangChainEvent and onDebugEvent to useStream	2025-04-29 15:34:03 +02:00
Tat Dat Duong	cc62a9fa33	feat(sdk-js): pass the client instead of apiKey/apiUrl	2025-04-29 15:17:55 +02:00
David DuongandGitHub	b7482a6f6a	fix(docs): Studio troubleshooting docs (#4449 )	2025-04-29 11:59:39 +02:00
Tat Dat Duong	d4df2bd807	fix(docs): Studio troubleshooting docs	2025-04-29 11:58:52 +02:00
Sydney Runkle	6250b364f7	version bumps and locks	2025-04-28 17:39:20 -04:00
William FHandGitHub	062253fe48	Add examples of configurable headers (#4445 )	2025-04-28 12:52:06 -07:00
Sydney RunkleandGitHub	fc0d08328d	langgraph: fix bug + add test for multi resume (#4444 ) Fine if command is "empty" as we don't add writes for mapped resumes.	2025-04-28 15:48:33 -04:00
Sydney Runkle	2bf8e690b0	test + bug fix	2025-04-28 15:41:37 -04:00
Vadym BardaandGitHub	11c6a54de9	docs: small update in the manage message history how to (#4442 )	2025-04-28 13:22:52 -04:00
Nuno CamposandGitHub	78581b80c2	Support multiple resume values with `Command.resume` (#4406 ) * Adding support for mapping interrupt ids -> resume values with the `Command.resume_map` argument, like: ```py resume_map = { i.interrupt_id: f"human input for prompt {i.value}" for i in parent_graph.get_state(thread_config).interrupts } parent_graph.invoke(Command(resume=resume_map), config=thread_config) ``` * Adds an `interrupts` attribute on `StateSnapshot` so that we can access that directly rather than having to do `get_state(thread_config).tasks` and then iterate over tasks to find interrupts * Deprecates undocumented feature where (if interrupting a graph from the level of an interrupt), you could pass a dict mapping task ids -> resume values. Now we recommend and endorse the `interrupt_id` approach above. I'll note, from an internal perspective, I would love if we didn't have to pass around this map, but it seems like the best way right now to make the necessary resume information necessary at different levels in a graph with subgraphs. Fix https://github.com/langchain-ai/langgraph/issues/4028 Slotted to be included in our v0.4.0 release early next week!	2025-04-28 09:06:58 -07:00
Sydney Runkle	5fee0d9d66	skip yielding interrupt if input was a map	2025-04-28 11:47:51 -04:00
William FHandGitHub	68e3d70967	Add section in how-to on exclusions (#4441 )	2025-04-28 08:42:32 -07:00
William FHandGitHub	dc9f2b1109	Add how-to on headers (#4440 ) and their configurability for configurability	2025-04-28 15:31:48 +00:00
William FHandGitHub	67aeba6210	Add schema updates for the configurable headers (#4437 )	2025-04-28 15:10:07 +00:00
Sydney Runkle	dbf1c28ccd	lint	2025-04-28 10:22:30 -04:00
Sydney Runkle	cb25ef985d	update loop to append mapped tasks to task specific values	2025-04-28 10:18:39 -04:00
Sydney RunkleandGitHub	2f49ebfd53	packaging: Remove Python Upper Bounds (#4416 ) A few notes: * We shouldn't be using `tool.poetry.dependencies`, that's deprecated - waiting for a future PR to address this big change though. * We should remove upper bounds for all deps unless strictly necessary.	2025-04-28 10:03:43 -04:00
David DuongandGitHub	d9c781cc7d	feat(js): add message-specific fallback UI components (#4430 )	2025-04-28 12:17:07 +02:00
David DuongandGitHub	66af72acb3	fix(sdk-js): remove client-only bootstrapping warning (#4428 )	2025-04-28 12:05:43 +02:00
Tat Dat Duong	a44d822cd3	feat(js): add message-specific fallback UI components	2025-04-28 12:03:58 +02:00
Tat Dat Duong	28d884b37a	fix(sdk-js): remove client-only bootstrapping warning	2025-04-28 11:52:26 +02:00
William FHandGitHub	d7a0da8f06	checkpointer: Enter stack for blobs dict in InMemorySaver (#4419 )	2025-04-26 13:57:36 -07:00
Vadym BardaandGitHub	2d9347ec33	docs(cloud): update human-in-the-loop guides to use interrupt() (#4418 )	2025-04-26 13:37:06 -04:00
Sydney Runkle	5e9bea5134	no upper bounds for python	2025-04-25 17:45:54 -07:00
Sydney RunkleandGitHub	5ddc24ba85	Merge branch 'main' into multi-resumes	2025-04-25 17:05:35 -07:00
Sydney Runkle	0362840d0b	revert debugging note" "	2025-04-25 17:00:26 -07:00
Sydney Runkle	44099d27c8	fixing tests	2025-04-25 16:53:37 -07:00
Nuno CamposandGitHub	8951d162f0	Improve logic for drawing virtual end node (#4409 ) - Don't draw unexpected edges to END node - If a conditional edge has a custom label for END node then draw it	2025-04-25 15:45:12 -07:00
Nuno Campos	d90126b34e	Fix	2025-04-25 15:38:41 -07:00
Nuno CamposandGitHub	adc4569daf	build(deps): bump h11 from 0.14.0 to 0.16.0 in /libs/checkpoint-sqlite (#4403 ) Bumps [h11](https://github.com/python-hyper/h11) from 0.14.0 to 0.16.0. <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/python-hyper/h11/commit/1c5b07581f058886c8bdd87adababd7d959dc7ca"><code>1c5b075</code></a> this time for surer</li> <li><a href="https://github.com/python-hyper/h11/commit/d9c369935e853a7ee1aeb7e481f6dddf9b9c9b8a"><code>d9c3699</code></a> this time for sure...</li> <li><a href="https://github.com/python-hyper/h11/commit/d91b9dd2290a25c8c3f5ec15feb57de5873e6e39"><code>d91b9dd</code></a> blacken</li> <li><a href="https://github.com/python-hyper/h11/commit/5a4683ca466b59bbab9b19cfea20ee157b31cee0"><code>5a4683c</code></a> Soothe mypy</li> <li><a href="https://github.com/python-hyper/h11/commit/9c9567f0a92d13a83a8d8ebdbc757c8c2d384536"><code>9c9567f</code></a> Bump version to 0.16.0</li> <li><a href="https://github.com/python-hyper/h11/commit/114803a29ce50116dc47951c690ad4892b1a36ed"><code>114803a</code></a> Merge commit from fork</li> <li><a href="https://github.com/python-hyper/h11/commit/9462006f6ce4941661888228cbd4ac1ea80689b0"><code>9462006</code></a> Bump version to 0.15.0</li> <li><a href="https://github.com/python-hyper/h11/commit/70a96bea8e55403e5d92db14c111432c6d7a8685"><code>70a96be</code></a> Merge pull request <a href="https://redirect.github.com/python-hyper/h11/issues/181">#181</a> from Julien00859/Julien00859/get_int_max_str_digits</li> <li><a href="https://github.com/python-hyper/h11/commit/60782ad107e538b9312aac7e1c119c8358bf797c"><code>60782ad</code></a> Reject Content-Length longer 1 billion TB</li> <li><a href="https://github.com/python-hyper/h11/commit/dff7cc397a26ed4acdedd92d1bda6c8f18a6ed9f"><code>dff7cc3</code></a> Validate Chunked-Encoding chunk footer</li> <li>Additional commits viewable in <a href="https://github.com/python-hyper/h11/compare/v0.14.0...v0.16.0">compare view</a></li> </ul> </details> <br /> [![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=h11&package-manager=pip&previous-version=0.14.0&new-version=0.16.0)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot show <dependency name> ignore conditions` will show all of the ignore conditions of the specified dependency - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) You can disable automated security fix PRs for this repo from the [Security Alerts page](https://github.com/langchain-ai/langgraph/network/alerts). </details>	2025-04-25 15:23:46 -07:00
Nuno Campos	6d70559618	Upgrade	2025-04-25 15:17:06 -07:00
Nuno Campos	70afd2dc2c	Update all	2025-04-25 15:11:32 -07:00
ccurmeandGitHub	14e7215090	docs: use langchain-tavily in quickstart (#4412 ) We want to deprecate `TavilySearchResults` in langchain-community in favor of `TavilySearch` in langchain-tavily. Also update quickstart to use `init_chat_model`.	2025-04-25 17:54:37 -04:00
Nuno Campos	460edde3a7	Lint	2025-04-25 14:37:53 -07:00
Nuno Campos	34d591dedf	Improve logic for drawing virtual end node - Don't draw unexpected edges to END node - If a conditional edge has a custom label for END node then draw it	2025-04-25 14:37:53 -07:00
Daehwi KimandGitHub	746b5f0730	fix(docs): fix typo (#4411 )	2025-04-25 17:10:47 -04:00
Vadym BardaandGitHub	64448404de	ci: don't try to render mermaid images when testing notebooks (#4414 )	2025-04-25 17:09:18 -04:00
Andrew NguonlyandGitHub	9637f3b1be	docs: Document API endpoint for creating new project (#4413 )	2025-04-25 10:42:20 -07:00
Sydney Runkle	50449af1a9	add convenient interrupt access to StateSnapshot	2025-04-24 14:52:54 -07:00
Sydney Runkle	c2fa33e055	linting etc	2025-04-24 13:28:29 -07:00
Sydney Runkle	644a6c3b63	use resume instead of resume_map and deprecate old mapping task_id -> resume logic	2025-04-24 13:26:01 -07:00
Jacob LeeandGitHub	c7fe85585b	docs: Adds additional Google Analytics tag to docs (#4402 ) CC @danielrlambert3	2025-04-24 13:17:52 -07:00
Sydney Runkle	847b9c13ac	adding docs example	2025-04-24 12:36:35 -07:00
Sydney Runkle	b6963d35aa	multi hitl with new hash pattern	2025-04-24 11:21:25 -07:00
dependabot[bot]andGitHub	c6971c6a58	build(deps): bump h11 from 0.14.0 to 0.16.0 in /libs/checkpoint-sqlite Bumps [h11](https://github.com/python-hyper/h11) from 0.14.0 to 0.16.0. - [Commits](https://github.com/python-hyper/h11/compare/v0.14.0...v0.16.0) --- updated-dependencies: - dependency-name: h11 dependency-version: 0.16.0 dependency-type: indirect ... Signed-off-by: dependabot[bot] <support@github.com>	2025-04-24 17:46:01 +00:00
Sydney RunkleandGitHub	2327f8619f	docs: fix xlinks (api and general) (#4391 ) Mostly focusing on the API docs xrefs now working, for example: <img width="728" alt="Screenshot 2025-04-23 at 6 43 40 PM" src="https://github.com/user-attachments/assets/e0939edb-2088-4b4e-92b0-8009aac6a86e" /> --> <img width="737" alt="Screenshot 2025-04-23 at 7 57 28 PM" src="https://github.com/user-attachments/assets/d05e28b5-cf4f-41e0-96f8-9910d19f4657" /> Also fixed some other broken links / references. There are lots of broken links related to langgraph plans / deployment options, I think our new docs writer was going to work on those.	2025-04-24 08:47:08 -07:00
Sydney RunkleandGitHub	4eb124e83d	[breaking]: Improve interrupt behavior when `stream_mode='values'` (#4374 ) This PR does a few things: 1. Surfaces interrupts when `stream_mode='values'` (particularly relevant for `invoke`, where this is the default behavior) 2. Adds an `interrupt_id` property to the `Interrupt` dataclass so that interrupts can effectively be mapped to resumes 3. Minor docs updates to reflect the new pattern (no need for a special section on interrupts with `invoke` and `ainvoke`) * In a different PR (the one with the multiple resume values), as it's more relevant there: add an `interrupts` property to `StateSnapshot` so that `interrupts` can easily be iterated over if users are attempting to map interrupts to resumes. I don't recommend we release this until we have multi-resumes working. ## Example We have the following setup where we're sending multiple prompts to the child graph, which uses `interrupt`: ```py def child_graph(state): human_input = interrupt(state["prompt"]) return { "human_inputs": [human_input], } ``` <img width="142" alt="Screenshot 2025-04-23 at 10 01 12 AM" src="https://github.com/user-attachments/assets/c6238bf1-54ad-4e48-ab0b-60a0bfc18485" /> Old behavior: ```py initial_input = {"prompts": ["a", "b"]} print(parent_graph.invoke(input=initial_input,config=thread_config,stream_mode="values")) #> {'prompts': ['a', 'b'], 'human_inputs': []} print(parent_graph.invoke(Command(resume="hello 1"),config=thread_config,stream_mode="values")) #> {'prompts': ['a', 'b'], 'human_inputs': ['hello 1']} print(parent_graph.invoke(Command(resume="hello 2"),config=thread_config,stream_mode="values")) #> {'prompts': ['a', 'b'], 'human_inputs': ['hello 1', 'hello 2']} ``` New behavior: ```py initial_input = {"prompts": ["a", "b"]} print(parent_graph.invoke(input=initial_input,config=thread_config,stream_mode="values")) """ { "prompts": ["a", "b"], "human_inputs": [], "__interrupt__": [ Interrupt( value="a", resumable=True, ns=["child_graph:38d43a18-a5e7-8ab2-ca83-9d80f6e9ca83"] ), Interrupt( value="b", resumable=True, ns=["child_graph:dad810e8-738e-9f90-41cd-30c0091eb79b"] ) ] } """ print(parent_graph.invoke(Command(resume="hello 1"),config=thread_config,stream_mode="values")) """ { "prompts": ["a", "b"], "human_inputs": ["hello 1"], "__interrupt__": [ Interrupt( value="b", resumable=True, ns=["child_graph:dad810e8-738e-9f90-41cd-30c0091eb79b"] ) ] } """ print(parent_graph.invoke(Command(resume="hello 2"),config=thread_config,stream_mode="values")) #> {'prompts': ['a', 'b'], 'human_inputs': ['hello 1', 'hello 2']} ```	2025-04-24 08:21:28 -07:00
Sydney Runkle	84e9ebda91	add back auto gen content	2025-04-24 08:16:03 -07:00
Sydney Runkle	48e8576fcf	remove auto gen file	2025-04-24 08:15:06 -07:00
William FHandGitHub	6263c2f710	Copy with cached property (#4399 )	2025-04-24 07:16:37 -07:00
David DuongandGitHub	17bc55028e	docs(js): update semver constraints (#4401 )	2025-04-24 15:48:17 +02:00
Tat Dat Duong	cd8443f5ce	docs(js): update semver constraints	2025-04-24 15:47:38 +02:00
David DuongandGitHub	7e3f31f97c	docs(js): update required semver ranges (#4396 )	2025-04-24 12:41:12 +02:00
Tat Dat Duong	3db9bf325c	docs(js): update required semver ranges	2025-04-24 12:37:26 +02:00
Sydney Runkle	97337355a2	formatting	2025-04-23 21:21:02 -07:00
Sydney Runkle	d6c12133ad	fixing links	2025-04-23 21:15:55 -07:00
Sydney Runkle	d67abdd112	fix docs build	2025-04-23 20:07:16 -07:00
Sydney Runkle	8dec77e129	remove bounds on mkdocs deps	2025-04-23 18:42:42 -07:00
Sydney Runkle	b81c21f311	docs updates	2025-04-23 17:48:47 -07:00
Sydney Runkle	cd6b086374	await	2025-04-23 16:36:37 -07:00
Sydney Runkle	5929b0b08d	more test fixes	2025-04-23 16:19:46 -07:00
Sydney Runkle	9f33b4e529	fix test to reflect bug fix	2025-04-23 16:03:08 -07:00
Sydney RunkleandGitHub	f0fb8d9187	Merge branch 'main' into sr/better-interrupts	2025-04-23 15:58:57 -07:00
Sydney RunkleandGitHub	0ff913c50b	Fix double interrupt return caused by dynamic tasks (#4389 ) Fix issue found in https://github.com/langchain-ai/langgraph/pull/4374#discussion_r2056701206	2025-04-23 15:56:47 -07:00
Sydney RunkleandGitHub	67075bfb7f	Update libs/langgraph/tests/test_pregel_async.py	2025-04-23 15:50:22 -07:00
Sydney Runkle	37b2956758	helpful comments + test	2025-04-23 14:24:57 -07:00
Sydney Runkle	f42fc971e3	fix double interrupt raise with task path bool flag	2025-04-23 14:16:35 -07:00
Vadym BardaandGitHub	6bcab08f55	langgraph: release 0.3.33 (#4388 )	2025-04-23 16:28:12 -04:00
Sydney Runkle	8fe7c8101f	more explicit tests	2025-04-23 11:49:26 -07:00
Vadym BardaandGitHub	6bca615e6a	langgraph: allow nested lists/dicts of primitives in RemoteGraph config (#4387 )	2025-04-23 14:04:54 -04:00
Vadym BardaandGitHub	0147790937	langgraph: release 0.3.32 (#4386 )	2025-04-23 11:51:29 -04:00
Vadym BardaandGitHub	364c572f0f	langgraph: fix messages streaming for list of Commands (#4379 ) Fixes #4372	2025-04-23 11:46:57 -04:00
langchain-infraandGitHub	8af4b63c69	docs: Add docs for REDIS_KEY_PREFIX, REDIS_CLUSTER env vars (#4334 ) # Description Add documentation for using the REDIS_KEY_PREFIX, REDIS_CLUSTER env vars.	2025-04-23 11:17:03 -04:00
Asamu DavidandGitHub	941b4b1287	Merge branch 'main' into da/4-17/add-redis-prefix-support	2025-04-23 15:52:30 +01:00
Asamu DavidandGitHub	24f04fba37	Update REDIS_CLUSTER env doc.md	2025-04-23 15:52:07 +01:00
Sydney Runkle	d6b4ee348f	goodness, last test fix	2025-04-22 17:32:13 -07:00
Sydney Runkle	9e89b68596	fixing prebuilt tests	2025-04-22 17:24:54 -07:00
Sydney Runkle	1251eeaa48	final test fixes, hopefully	2025-04-22 17:21:56 -07:00
Sydney Runkle	85e73653f9	linting and test fixes	2025-04-22 17:10:54 -07:00
Sydney RunkleandGitHub	a8b70cb23c	Merge branch 'main' into sr/better-interrupts	2025-04-22 13:48:03 -07:00
Sydney Runkle	abc6323c6c	Merge branch 'sr/better-interrupts' of https://github.com/langchain-ai/langgraph into sr/better-interrupts	2025-04-22 11:39:24 -07:00
Sydney Runkle	d5a1bb05f5	revert changes to lockfile	2025-04-22 11:35:56 -07:00
Sydney Runkle	8506c6655b	more linting	2025-04-22 11:34:38 -07:00
Sydney RunkleandGitHub	44af4d8e3e	Merge branch 'main' into sr/better-interrupts	2025-04-22 11:31:46 -07:00
Sydney Runkle	8e6c0be48a	try linting + maybe test fix	2025-04-22 11:28:09 -07:00
Sydney Runkle	35523f4081	linting	2025-04-22 10:34:24 -07:00
Sydney Runkle	9a7b1fa12a	initial pass - surfacing interrupts for stream_mode='values'	2025-04-22 10:15:19 -07:00
David Asamu	f94eeabebd	add doc for REDIS_CLUSTER env var	2025-04-17 23:20:53 +01:00
Asamu DavidandGitHub	9e22a75423	Merge branch 'main' into da/4-17/add-redis-prefix-support	2025-04-17 22:30:10 +01:00
David Asamu	e0da491fe6	docs: Add docs for REDIS_KEY_PREFIX env var	2025-04-17 21:38:41 +01:00
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