feat(cli): add support for gen ui config (#4079)

### Summary
1. Update API spec.
2. Clarify how to specify `requirements.txt` in `dependencies` list.
3. Clarify deletion policy for database.
4. Clarify resource allocation for `Production` type deployments.
5. Update supported Python versions.

.github/workflows/bench.yml

@@ -43,7 +43,7 @@ jobs:
         run: |
           {
             echo 'OUTPUT<<EOF'
-            make -s benchmark
+            make -s benchmark-fast
             echo EOF
           } >> "$GITHUB_OUTPUT"
       - name: Compare benchmarks

.github/workflows/deploy_docs.yml

@@ -63,35 +63,16 @@ jobs:
           poetry-version: ${{ env.POETRY_VERSION }}
           cache-key: docs
 
-      - name: Use Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: "22"
-          cache: "yarn"
-          cache-dependency-path: docs/yarn.lock
-
       - name: Install dependencies
         run: |
           yarn
           poetry install --with test --with docs --no-root
-          poetry run pip install -U \
-            pytest \
-            pytest-check-links \
-            GitPython \
-            "git+https://github.com/benjamincburns/markdown-exec.git@cc0d39d737e5ffd4b83d23cd8729d7ea16e363c8"
-
           # we run this installation only for internal PRs
           # as GITHUB_TOKEN is not available for PRs from outside contributors
           if [ -n "${GITHUB_TOKEN}" ]; then
             poetry run pip install "git+https://${GITHUB_TOKEN}@github.com/langchain-ai/mkdocs-material-insiders.git"
           fi
 
-          poetry run jupyter kernelspec list
-          poetry run python3 -m ipykernel install --user --name=python3
-          npm install -g tslab
-          poetry run tslab install --python=python3
-          poetry run jupyter kernelspec list
-
       - name: Run unit tests
         # Run unit tests on the docs build pipeline
         run: make tests
@@ -118,7 +99,7 @@ jobs:
         env:
           LANGCHAIN_API_KEY: test
         run: |
-          if [ "${{ github.event_name }}" == "schedule" ] || [ "${{ github.event_name }}" == "workflow_dispatch" ] || ([ "${{ github.event_name }}" == "push" ] && [ "${{ github.ref }}" == "refs/heads/main" ]); then
+          if [ "${{ github.event_name }}" == "schedule" ]; then
             echo "Running link check on all HTML files matching notebooks in docs directory..."
             poetry run pytest -v \
               --check-links-ignore "https://(api|web|docs)\.smith\.langchain\.com/.*" \

docs/_scripts/third_party_page/packages.yml

@@ -36,6 +36,6 @@ packages:
   - name: "langgraph-reflection"
     repo: "langchain-ai/langgraph-reflection"
     description: "LangGraph agent that runs a reflection step."
-  - name: "langmanus"
-    repo: "langmanus/langmanus"
-    description: "A community-driven AI automation framework that builds upon the incredible work of the open source community. Our goal is to combine language models with specialized tools for tasks like web search, crawling, and Python code execution, while giving back to the community that made this possible."
+  - name: "langgraph-codeact"
+    repo: "langchain-ai/langgraph-codeact"
+    description: "LangGraph implementation of CodeAct agent that generates and executes code instead of tool calling."

docs/docs/adopters.md

@@ -10,14 +10,17 @@ This list of companies using LangGraph and their success stories is compiled fro
 | [Athena Intelligence](https://www.athenaintel.com/) | Software & Technology (GenAI Native) | Research & summarization | [Case study, 2024](https://blog.langchain.dev/customers-athena-intelligence/) |
 | [Captide](https://www.captide.co/) | Software & Technology (GenAI Native) | Data extraction | [Case study, 2025](https://blog.langchain.dev/how-captide-is-redefining-equity-research-with-agentic-workflows-built-on-langgraph-and-langsmith/) |
 | [Cisco Outshift](https://outshift.cisco.com/) | Software & Technology | DevOps | [Blog post, 2025](https://outshift.cisco.com/blog/build-react-agent-application-for-devops-tasks-using-rest-apis) |
+| [C.H. Robinson](https://www.chrobinson.com/en-us/) | Logistics | Automation | [Case study, 2025](https://blog.langchain.dev/customers-chrobinson/) |
 | [Elastic](https://www.elastic.co/) | Software & Technology | Copilot for domain-specific task | [Blog post, 2025](https://www.elastic.co/blog/elastic-security-generative-ai-features) |
 | [GitLab](https://about.gitlab.com/) | Software & Technology | Code generation | [Duo workflow docs](https://handbook.gitlab.com/handbook/engineering/architecture/design-documents/duo_workflow/) |
+| [Inconvo](https://inconvo.ai/?ref=blog.langchain.dev) | Software & Technology | Code generation | [Case study, 2025](https://blog.langchain.dev/customers-inconvo/) |
 | [Infor](https://infor.com/) | Software & Technology | GenAI embedded product experiences; customer support; copilot | [Case study, 2025](https://blog.langchain.dev/customers-infor/) |
 | [Klarna](https://www.klarna.com/) | Fintech | Copilot for domain-specific task | [Case study, 2025](https://blog.langchain.dev/customers-klarna/) |
 | [Komodo Health](https://www.komodohealth.com/) | Healthcare | Copilot for domain-specific task | [Blog post](https://www.komodohealth.com/perspectives/new-gen-ai-assistant-empowers-the-enterprise/) |
 | [LinkedIn](https://www.linkedin.com/) | Social Media | Code generation; Search & discovery | [Blog post, 2025](https://www.linkedin.com/blog/engineering/ai/practical-text-to-sql-for-data-analytics); [Blog post, 2024](https://www.linkedin.com/blog/engineering/generative-ai/behind-the-platform-the-journey-to-create-the-linkedin-genai-application-tech-stack) |
 | [Minimal](https://gominimal.ai/) | E-commerce | Customer support | [Case study, 2025](https://blog.langchain.dev/how-minimal-built-a-multi-agent-customer-support-system-with-langgraph-langsmith/) |
 | [OpenRecovery](https://www.openrecovery.com/) | Healthcare | Copilot for domain-specific task | [Case study, 2024](https://blog.langchain.dev/customers-openrecovery/) |
+| [Qodo](https://www.qodo.ai/) | Software & Technology (GenAI Native) | Code generation | [Blog post, 2025](https://www.qodo.ai/blog/why-we-chose-langgraph-to-build-our-coding-agent/) |
 | [Rakuten](https://www.rakuten.com/) | E-commerce / Fintech | Copilot for domain-specific task | [Blog post, 2025](https://rakuten.today/blog/from-ai-hype-to-real-world-tools-rakuten-teams-up-with-langchain.html) |
 | [Replit](https://replit.com/) | Software & Technology | Code generation | [Blog post, 2024](https://blog.langchain.dev/customers-replit/); [Breakout agent story, 2024](https://www.langchain.com/breakoutagents/replit); [Fireside chat video, 2024](https://www.youtube.com/watch?v=ViykMqljjxU) |
 | [Rexera](https://www.rexera.com/) | Real Estate (GenAI Native) | Copilot for domain-specific task | [Case study, 2024](https://blog.langchain.dev/customers-rexera/) |
@@ -25,3 +28,4 @@ This list of companies using LangGraph and their success stories is compiled fro
 | [Uber](https://www.uber.com/) | Transportation | Developer productivity; Code generation | [Presentation, 2024](https://dpe.org/sessions/ty-smith-adam-huda/this-year-in-ubers-ai-driven-developer-productivity-revolution/); [Video, 2024](https://www.youtube.com/watch?v=8rkA5vWUE4Y) |
 | [Unify](https://www.unifygtm.com/) | Software & Technology (GenAI Native) | Copilot for domain-specific task | [Blog post, 2024](https://blog.langchain.dev/unify-launches-agents-for-account-qualification-using-langgraph-and-langsmith/) |
 | [Vizient](https://www.vizientinc.com/) | Healthcare | Copilot for domain-specific task | [Case study, 2025](https://blog.langchain.dev/p/3d2cd58c-13a5-4df9-bd84-7d54ed0ed82c/) |
+| [Vodafone](https://www.vodafone.com/) | Telecommunications | Code generation; internal search | [Case study, 2025](https://blog.langchain.dev/customers-vodafone/) |

docs/docs/cloud/how-tos/clone_traces_studio.md

@@ -0,0 +1,31 @@
+# Testing local agents with remote traces
+
+## Overview
+
+A common workflow when debugging production-deployed agents is to test the same thread against a local version of the same agent, which may have modifications.
+
+To support this, LangGraph Studio, in combination with LangSmith, allows you to clone remote threads traced in LangSmith into your locally running agent. This cloned thread can then be used to re-run specific nodes within Studio.
+
+## Requirements
+
+!!! info "Prerequisites"
+
+    - langgraph>=0.3.18
+    - langgraph-api>=0.0.32
+
+- A thread traced in LangSmith.
+- A locally running agent. See [here](../../how-tos/local-studio.md) for setup instructions.
+  - Note that your local agent must be using the above specified `langgraph` and `langgraph-api` versions.
+  - The nodes present in the remote trace must exist in at least one of the graphs in your local agent.
+
+## Cloning Thread
+
+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}
+
+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.
+
+Once selected, a will a new thread in your local agent will be created and the thread history will be reconstruced to reflect the original trace.
+
+Alternatively, if your trace originates from an agent deployed on LangGraph Platform, you can "View original thread" to open Studio with the actual deployed thread.

docs/docs/cloud/how-tos/use_stream_react.md

@@ -1,8 +1,6 @@
 # How to integrate LangGraph into your React application
 
-!!! info "Prerequisites"
-    - [LangGraph Platform](../../concepts/langgraph_platform.md)
-    - [LangGraph Server](../../concepts/langgraph_server.md)
+!!! info "Prerequisites" - [LangGraph Platform](../../concepts/langgraph_platform.md) - [LangGraph Server](../../concepts/langgraph_server.md)
 
 The `useStream()` React hook provides a seamless way to integrate LangGraph into your React applications. It handles all the complexities of streaming, state management, and branching logic, letting you focus on building great chat experiences.
 
@@ -169,10 +167,7 @@ The `useStream()` hook exposes the `interrupt` property, which will be filled wi
 Learn more about interrupts in the [How to handle interrupts](../../how-tos/human_in_the_loop/wait-user-input.ipynb) guide.
 
 ```tsx
-const thread = useStream<
-  { messages: Message[] },
-  { InterruptType: string }
->({
+const thread = useStream<{ messages: Message[] }, { InterruptType: string }>({
   apiUrl: "http://localhost:2024",
   assistantId: "agent",
   messagesKey: "messages",
@@ -182,7 +177,6 @@ if (thread.interrupt) {
   return (
     <div>
       Interrupted! {thread.interrupt.value}
-
       <button
         type="button"
         onClick={() => {
@@ -313,7 +307,7 @@ export default function App() {
                   onEdit={(message) =>
                     thread.submit(
                       { messages: [message] },
-                      { checkpoint: parentCheckpoint },
+                      { checkpoint: parentCheckpoint }
                     )
                   }
                 />
@@ -370,6 +364,33 @@ export default function App() {
 
 For advanced use cases you can use the `experimental_branchTree` property to get the tree representation of the thread, which can be used to render branching controls for non-message based graphs.
 
+### Optimistic Updates
+
+You can optimistically update the client state before performing a network request to the agent, allowing you to provide immediate feedback to the user, such as showing the user message immediately before the agent has seen the request.
+
+```tsx
+const stream = useStream({
+  apiUrl: "http://localhost:2024",
+  assistantId: "agent",
+  messagesKey: "messages",
+});
+
+const handleSubmit = (text: string) => {
+  const newMessage = { type: "human" as const, content: text };
+
+  stream.submit(
+    { messages: [newMessage] },
+    {
+      optimisticValues(prev) {
+        const prevMessages = prev.messages ?? [];
+        const newMessages = [...prevMessages, newMessage];
+        return { ...prev, messages: newMessages };
+      },
+    }
+  );
+};
+```
+
 ### TypeScript
 
 The `useStream()` hook is friendly for apps written in TypeScript and you can specify types for the state to get better type safety and IDE support.
@@ -397,21 +418,23 @@ You can also optionally specify types for different scenarios, such as:
 - `UpdateType`: Type for the submit function (default: `Partial<State>`)
 
 ```tsx
-
-const thread = useStream<State, {
-  UpdateType: {
-    messages: Message[] | Message;
-    context?: Record<string, unknown>;
-  };
-  InterruptType: string;
-  CustomEventType: {
-    type: "progress" | "debug";
-    payload: unknown;
-  };
-  ConfigurableType: {
-    model: string;
-  };
-}>({
+const thread = useStream<
+  State,
+  {
+    UpdateType: {
+      messages: Message[] | Message;
+      context?: Record<string, unknown>;
+    };
+    InterruptType: string;
+    CustomEventType: {
+      type: "progress" | "debug";
+      payload: unknown;
+    };
+    ConfigurableType: {
+      model: string;
+    };
+  }
+>({
   apiUrl: "http://localhost:2024",
   assistantId: "agent",
   messagesKey: "messages",

docs/docs/cloud/reference/api/openapi.json

@@ -22,7 +22,7 @@
       "description": "A run is an invocation of a graph / assistant, with no state or memory persistence."
     },
     {
-      "name": "Crons (Enterprise-only)",
+      "name": "Crons (Plus tier)",
       "description": "A cron is a periodic run that recurs on a given schedule. The repeats can be isolated, or share state in a thread"
     },
     {
@@ -805,6 +805,58 @@
         }
       }
     },
+    "/threads/state/bulk": {
+      "post": {
+        "tags": [
+          "Threads"
+        ],
+        "summary": "Bulk Update Thread State",
+        "description": "Create a new thread from a batch of state updates.",
+        "operationId": "bulk_update_thread_state_post",
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/ThreadStateBulkUpdate"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "200": {
+            "description": "Success",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/Thread"
+                }
+              }
+            }
+          },
+          "409": {
+            "description": "Conflict",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/threads/{thread_id}/state": {
       "get": {
         "tags": [
@@ -1342,6 +1394,21 @@
             },
             "name": "offset",
             "in": "query"
+          },
+          {
+            "required": false,
+            "schema": {
+              "type": "string",
+              "enum": [
+                "pending",
+                "error",
+                "success",
+                "timeout",
+                "interrupted"
+              ]
+            },
+            "name": "status",
+            "in": "query"
           }
         ],
         "responses": {
@@ -1458,7 +1525,7 @@
     "/threads/{thread_id}/runs/crons": {
       "post": {
         "tags": [
-          "Crons (Enterprise-only)"
+          "Crons (Plus tier)"
         ],
         "summary": "Create Thread Cron",
         "description": "Create a cron to schedule runs on a thread.",
@@ -1836,6 +1903,17 @@
             },
             "name": "run_id",
             "in": "path"
+          },
+          {
+            "required": false,
+            "schema": {
+              "type": "boolean",
+              "title": "Cancel on Disconnect",
+              "description": "If true, the run will be cancelled if the client disconnects.",
+              "default": false
+            },
+            "name": "cancel_on_disconnect",
+            "in": "query"
           }
         ],
         "responses": {
@@ -2032,7 +2110,7 @@
     "/runs/crons": {
       "post": {
         "tags": [
-          "Crons (Enterprise-only)"
+          "Crons (Plus tier)"
         ],
         "summary": "Create Cron",
         "description": "Create a cron to schedule runs on new threads.",
@@ -2084,7 +2162,7 @@
     "/runs/crons/search": {
       "post": {
         "tags": [
-          "Crons (Enterprise-only)"
+          "Crons (Plus tier)"
         ],
         "summary": "Search Crons",
         "description": "Search all active crons",
@@ -2190,6 +2268,68 @@
         }
       }
     },
+    "/runs/cancel": {
+      "post": {
+        "tags": [
+          "Thread Runs"
+        ],
+        "summary": "Cancel Runs",
+        "description": "Cancel one or more runs. Can cancel runs by thread ID and run IDs, or by status filter.",
+        "operationId": "cancel_runs_post",
+        "parameters": [
+          {
+            "description": "Action to take when cancelling the run. Possible values are `interrupt` or `rollback`. `interrupt` will simply cancel the run. `rollback` will cancel the run and delete the run and associated checkpoints afterwards.",
+            "required": false,
+            "schema": {
+              "type": "string",
+              "enum": [
+                "interrupt",
+                "rollback"
+              ],
+              "title": "Action",
+              "default": "interrupt"
+            },
+            "name": "action",
+            "in": "query"
+          }
+        ],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/RunsCancel"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "204": {
+            "description": "Success - Runs cancelled"
+          },
+          "404": {
+            "description": "Not Found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          },
+          "422": {
+            "description": "Validation Error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/runs/wait": {
       "post": {
         "tags": [
@@ -2373,7 +2513,7 @@
     "/runs/crons/{cron_id}": {
       "delete": {
         "tags": [
-          "Crons (Enterprise-only)"
+          "Crons (Plus tier)"
         ],
         "summary": "Delete Cron",
         "description": "Delete a cron by ID.",
@@ -2936,7 +3076,7 @@
             "type": "string",
             "maxLength": 65536,
             "minLength": 1,
-            "format": "uri",
+            "format": "uri-reference",
             "title": "Webhook",
             "description": "Webhook to call after LangGraph API call is done."
           },
@@ -3216,7 +3356,11 @@
         "description": "The command to run.",
         "properties": {
           "update": {
-            "type": "object",
+            "type": [
+              "object",
+              "array",
+              "null"
+            ],
             "title": "Update",
             "description": "An update to the state."
           },
@@ -3226,12 +3370,13 @@
               "array",
               "number",
               "string",
+              "boolean",
               "null"
             ],
             "title": "Resume",
             "description": "A value to pass to an interrupted node."
           },
-          "send": {
+          "goto": {
             "anyOf": [
               {
                 "$ref": "#/components/schemas/Send"
@@ -3242,10 +3387,21 @@
                   "$ref": "#/components/schemas/Send"
                 }
               },
+              {
+                "type": "string"
+              },
+              {
+                "type": "array",
+                "items": {
+                  "type": "string"
+                }
+              },
               {
                 "type": "null"
               }
-            ]
+            ],
+            "title": "Goto",
+            "description": "Name of the node(s) to navigate to next or node(s) to be executed with a provided input."
           }
         }
       },
@@ -3276,6 +3432,18 @@
               {
                 "type": "object"
               },
+              {
+                "type": "array"
+              },
+              {
+                "type": "string"
+              },
+              {
+                "type": "number"
+              },
+              {
+                "type": "boolean"
+              },
               {
                 "type": "null"
               }
@@ -3326,7 +3494,7 @@
             "type": "string",
             "maxLength": 65536,
             "minLength": 1,
-            "format": "uri",
+            "format": "uri-reference",
             "title": "Webhook",
             "description": "Webhook to call after LangGraph API call is done."
           },
@@ -3491,6 +3659,18 @@
               {
                 "type": "object"
               },
+              {
+                "type": "array"
+              },
+              {
+                "type": "string"
+              },
+              {
+                "type": "number"
+              },
+              {
+                "type": "boolean"
+              },
               {
                 "type": "null"
               }
@@ -3541,7 +3721,7 @@
             "type": "string",
             "maxLength": 65536,
             "minLength": 1,
-            "format": "uri",
+            "format": "uri-reference",
             "title": "Webhook",
             "description": "Webhook to call after LangGraph API call is done."
           },
@@ -3840,6 +4020,36 @@
             "title": "If Exists",
             "description": "How to handle duplicate creation. Must be either 'raise' (raise error if duplicate), or 'do_nothing' (return existing thread).",
             "default": "raise"
+          },
+          "ttl": {
+            "type": "object",
+            "title": "TTL",
+            "description": "The time-to-live for the thread.",
+            "properties": {
+              "strategy": {
+                "type": "string",
+                "enum": ["delete"],
+                "description": "The TTL strategy. 'delete' removes the entire thread.",
+                "default": "delete"
+              },
+              "ttl": {
+                "type": "number",
+                "description": "The time-to-live in minutes from now until thread should be swept."
+              }
+            }
+          },
+          "supersteps": {
+            "type": "array",
+            "items": {
+              "type": "object",
+              "properties": {
+                "updates": {
+                  "type": "array",
+                  "items": { "$ref": "#/components/schemas/ThreadSuperstepUpdate" }
+                }
+              },
+              "required": ["updates"]
+            }
           }
         },
         "type": "object",
@@ -4028,6 +4238,43 @@
         "title": "ThreadStateUpdate",
         "description": "Payload for updating the state of a thread."
       },
+      "ThreadSuperstepUpdate": {
+        "properties": {
+          "values": {
+            "anyOf": [
+              {
+                "type": "array",
+                "items": {
+                  "type": "object"
+                }
+              },
+              {
+                "type": "object"
+              },
+              {
+                "type": "null"
+              }
+            ]
+          },
+          "command": {
+            "anyOf": [
+              {
+                "$ref": "#/components/schemas/Command"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "The command associated with the update."
+          },
+          "as_node": {
+            "type": "string",
+            "description": "Update the state as if this node had just executed."
+          }
+        },
+        "required": ["as_node"],
+        "type": "object"
+      },
       "ThreadStateUpdateResponse": {
         "properties": {
           "checkpoint": {
@@ -4230,6 +4477,42 @@
         },
         "description": "Represents a single document or data entry in the graph's Store. Items are used to store cross-thread memories."
       },
+      "RunsCancel": {
+        "type": "object",
+        "title": "RunsCancel",
+        "description": "Payload for cancelling runs.",
+        "properties": {
+          "status": {
+            "type": "string",
+            "enum": ["pending", "running", "all"],
+            "title": "Status",
+            "description": "Filter runs by status to cancel. Must be one of 'pending', 'running', or 'all'."
+          },
+          "thread_id": {
+            "type": "string",
+            "format": "uuid",
+            "title": "Thread Id",
+            "description": "The ID of the thread containing runs to cancel."
+          },
+          "run_ids": {
+            "type": "array",
+            "items": {
+              "type": "string",
+              "format": "uuid"
+            },
+            "title": "Run Ids",
+            "description": "List of run IDs to cancel."
+          }
+        },
+        "oneOf": [
+          {
+            "required": ["status"]
+          },
+          {
+            "required": ["thread_id", "run_ids"]
+          }
+        ]
+      },
       "SearchItemsResponse": {
         "type": "object",
         "required": [

docs/docs/cloud/reference/cli.md

@@ -42,12 +42,12 @@ The LangGraph CLI requires a JSON configuration file with the following keys:
 
     | Key                                                          | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
     | ------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-    | <span style="white-space: nowrap;">`dependencies`</span>     | **Required**. Array of dependencies for LangGraph Cloud API server. Dependencies can be one of the following: (1) `"."`, which will look for local Python packages, (2) `pyproject.toml`, `setup.py` or `requirements.txt` in the app directory `"./local_package"`, or (3) a package name.                                                                                                                                                                                                                                                                                     |
+    | <span style="white-space: nowrap;">`dependencies`</span>     | **Required**. Array of dependencies for LangGraph Cloud API server. Dependencies can be one of the following: <ul><li>A single period (`"."`), which will look for local Python packages.</li><li>The directory path where `pyproject.toml`, `setup.py` or `requirements.txt` is located.</br></br>For example, if `requirements.txt` is located in the root of the project directory, specify `"./"`. If it's located in a subdirectory called `local_package`, specify `"./local_package"`. Do not specify the string `"requirements.txt"` itself.</li><li>A Python package name.</li></ul> |
     | <span style="white-space: nowrap;">`graphs`</span>           | **Required**. Mapping from graph ID to path where the compiled graph or a function that makes a graph is defined. Example: <ul><li>`./your_package/your_file.py:variable`, where `variable` is an instance of `langgraph.graph.state.CompiledStateGraph`</li><li>`./your_package/your_file.py:make_graph`, where `make_graph` is a function that takes a config dictionary (`langchain_core.runnables.RunnableConfig`) and creates an instance of `langgraph.graph.state.StateGraph` / `langgraph.graph.state.CompiledStateGraph`.</li></ul>                                    |
     | <span style="white-space: nowrap;">`auth`</span>             | _(Added in v0.0.11)_ Auth configuration containing the path to your authentication handler. Example: `./your_package/auth.py:auth`, where `auth` is an instance of `langgraph_sdk.Auth`. See [authentication guide](../../concepts/auth.md) for details.                                                                                                                                                                                                                                                                                                                        |
     | <span style="white-space: nowrap;">`env`</span>              | Path to `.env` file or a mapping from environment variable to its value.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
     | <span style="white-space: nowrap;">`store`</span>            | Configuration for adding semantic search to the BaseStore. Contains the following fields: <ul><li>`index`: Configuration for semantic search indexing with fields:<ul><li>`embed`: Embedding provider (e.g., "openai:text-embedding-3-small") or path to custom embedding function</li><li>`dims`: Dimension size of the embedding model. Used to initialize the vector table.</li><li>`fields` (optional): List of fields to index. Defaults to `["$"]`, which means to index entire documents. Can be specific fields like `["text", "summary", "some.value"]`</li></ul></li></ul> |
-    | <span style="white-space: nowrap;">`python_version`</span>   | `3.11` or `3.12`. Defaults to `3.11`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
+    | <span style="white-space: nowrap;">`python_version`</span>   | `3.11`, `3.12`, or `3.13`. Defaults to `3.11`.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
     | <span style="white-space: nowrap;">`node_version`</span>     | Specify `node_version: 20` to use LangGraph.js.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
     | <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.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |

docs/docs/concepts/langgraph_cloud.md

@@ -19,6 +19,10 @@ Resource Allocation:
 | Development         | 1 CPU   | 1 GB       | Up to 1 container   |
 | Production          | 2 CPU   | 2 GB       | Up to 10 containers |
 
+CPU and memory resources are per container.
+
+For **Production type** deployments, resources can be manually increased on a case-by-case basis depending on use case and capacity constraints. Contact support@langchain.dev to request an increase in resources.
+
 See the [how-to guide](../cloud/deployment/cloud.md#create-new-deployment) for creating a new deployment.
 
 ## Revision
@@ -35,6 +39,8 @@ When defining a graph to be deployed to LangGraph Cloud SaaS, a [checkpointer](.
 
 There is no direct access to the database. All access to the database occurs through the LangGraph Server APIs.
 
+The database is never deleted until the deployment itself is deleted. See [Automatic Deletion](#automatic-deletion) for additional details.
+
 ## Autoscaling
 `Production` type deployments automatically scale up to 10 containers. Scaling is based on the current request load for a single container. Specifically, the autoscaling implementation scales the deployment so that each container is processing about 10 concurrent requests. For example... 
 
@@ -57,7 +63,7 @@ Infrastructure for [deployments](#deployment) and [revisions](#revision) are pro
 
 ## LangSmith Integration
 
-A [LangSmith](https://docs.smith.langchain.com/) tracing project is automatically created for each deployemnt. The tracing project has the same name as the deployment. When creating a deployment, the `LANGCHAIN_TRACING_V2` and `LANGCHAIN_API_KEY` environment variables do not need to be specified; they are set internally, automatically. Traces are created for each run and are emitted to the tracing project automatically.
+A [LangSmith](https://docs.smith.langchain.com/) tracing project is automatically created for each deployemnt. The tracing project has the same name as the deployment. When creating a deployment, the `LANGCHAIN_TRACING` and `LANGSMITH_API_KEY`/`LANGCHAIN_API_KEY` environment variables do not need to be specified; they are set internally, automatically. Traces are created for each run and are emitted to the tracing project automatically.
 
 When a deployment is deleted, the traces and the tracing project are not deleted.
 

docs/docs/concepts/pregel.md

@@ -284,7 +284,7 @@ LangGraph provides two high-level APIs for creating a Pregel application: the [S
     {'__start__': <langgraph.pregel.read.PregelNode at 0x7d05e3ba1810>,
      'write_essay': <langgraph.pregel.read.PregelNode at 0x7d05e3ba14d0>,
      'score_essay': <langgraph.pregel.read.PregelNode at 0x7d05e3ba1710>}
-     ```
+    ```
 
     ```python
     print(graph.channels)
@@ -344,4 +344,4 @@ LangGraph provides two high-level APIs for creating a Pregel application: the [S
     {'write_essay': <langgraph.pregel.read.PregelNode object at 0x7d05e2f9aad0>}
     Channels: 
     {'__start__': <langgraph.channels.ephemeral_value.EphemeralValue object at 0x7d05e2c906c0>, '__end__': <langgraph.channels.last_value.LastValue object at 0x7d05e2c90c40>, '__previous__': <langgraph.channels.last_value.LastValue object at 0x7d05e1007280>}
-    ```
+    ```

docs/docs/how-tos/index.md

@@ -300,6 +300,7 @@ LangGraph Studio is a built-in UI for visualizing, testing, and debugging your a
 - [How to interact with threads in LangGraph Studio](../cloud/how-tos/threads_studio.md)
 - [How to add nodes as dataset examples in LangGraph Studio](../cloud/how-tos/datasets_studio.md)
 - [How to engineer prompts in LangGraph Studio](../cloud/how-tos/iterate_graph_studio.md)
+- [How to test your agent against remote traces](../cloud/how-tos/clone_traces_studio.md)
 
 ## Troubleshooting
 

docs/docs/how-tos/stream-multiple.ipynb

@@ -1,210 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "id": "3631f2b9-aa79-472e-a9d6-9125a90ee704",
-   "metadata": {},
-   "source": [
-    "# How to configure multiple streaming modes at the same time"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "858c7499-0c92-40a9-bd95-e5a5a5817e92",
-   "metadata": {},
-   "source": [
-    "This guide covers how to configure multiple streaming modes at the same time."
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "7c2f84f1-0751-4779-97d4-5cbb286093b7",
-   "metadata": {},
-   "source": [
-    "## Setup\n",
-    "\n",
-    "First, let's install the required packages and set our API keys"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "id": "6b4285e4-7434-4971-bde0-aabceef8ee7e",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "%%capture --no-stderr\n",
-    "%pip install -U langgraph langchain-openai langchain-community"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "f7f9f24a-e3d0-422b-8924-47950b2facd6",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import getpass\n",
-    "import os\n",
-    "\n",
-    "\n",
-    "def _set_env(var: str):\n",
-    "    if not os.environ.get(var):\n",
-    "        os.environ[var] = getpass.getpass(f\"{var}: \")\n",
-    "\n",
-    "\n",
-    "_set_env(\"OPENAI_API_KEY\")"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "4e48aa9e",
-   "metadata": {},
-   "source": [
-    "<div class=\"admonition tip\">\n",
-    "    <p class=\"admonition-title\">Set up <a href=\"https://smith.langchain.com\">LangSmith</a> for LangGraph development</p>\n",
-    "    <p style=\"padding-top: 5px;\">\n",
-    "        Sign up for LangSmith to quickly spot issues and improve the performance of your LangGraph projects. LangSmith lets you use trace data to debug, test, and monitor your LLM apps built with LangGraph — read more about how to get started <a href=\"https://docs.smith.langchain.com\">here</a>. \n",
-    "    </p>\n",
-    "</div>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "cc82c21f",
-   "metadata": {},
-   "source": [
-    "## Define the graph\n",
-    "\n",
-    "We'll be using a simple ReAct agent for this guide."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "id": "85cf2e23-29f2-40cc-b302-5377b3b49da9",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "from typing import Literal\n",
-    "from langchain_community.tools.tavily_search import TavilySearchResults\n",
-    "from langchain_core.runnables import ConfigurableField\n",
-    "from langchain_core.tools import tool\n",
-    "from langchain_openai import ChatOpenAI\n",
-    "from langgraph.prebuilt import create_react_agent\n",
-    "\n",
-    "\n",
-    "@tool\n",
-    "def get_weather(city: Literal[\"nyc\", \"sf\"]):\n",
-    "    \"\"\"Use this to get weather information.\"\"\"\n",
-    "    if city == \"nyc\":\n",
-    "        return \"It might be cloudy in nyc\"\n",
-    "    elif city == \"sf\":\n",
-    "        return \"It's always sunny in sf\"\n",
-    "    else:\n",
-    "        raise AssertionError(\"Unknown city\")\n",
-    "\n",
-    "\n",
-    "tools = [get_weather]\n",
-    "\n",
-    "model = ChatOpenAI(model_name=\"gpt-4o\", temperature=0)\n",
-    "graph = create_react_agent(model, tools)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "48a7751c-3f06-452b-89f4-70267e4dd305",
-   "metadata": {},
-   "source": [
-    "## Stream multiple"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "id": "e9e9ffb0-2cd5-466f-b70b-b6ed51b852d1",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Receiving new event of type: debug...\n",
-      "{'type': 'task', 'timestamp': '2024-06-25T16:12:29.144117+00:00', 'step': 1, 'payload': {'id': '8399d8fd-4b28-515a-b0e9-1679557c0953', 'name': 'agent', 'input': {'messages': [HumanMessage(content=\"what's the weather in sf\", id='44ff9154-9485-49c9-b679-791314cc19e3')], 'is_last_step': False}, 'triggers': ['start:agent']}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: updates...\n",
-      "{'agent': {'messages': [AIMessage(content='', additional_kwargs={'tool_calls': [{'id': 'call_gZEyPpcgwnzsnee1HH4geKmB', 'function': {'arguments': '{\"city\":\"sf\"}', 'name': 'get_weather'}, 'type': 'function'}]}, response_metadata={'token_usage': {'completion_tokens': 14, 'prompt_tokens': 57, 'total_tokens': 71}, 'model_name': 'gpt-4o-2024-05-13', 'system_fingerprint': 'fp_3e7d703517', 'finish_reason': 'tool_calls', 'logprobs': None}, id='run-37ca191f-f68f-4a70-8924-a40f90c8c0ed-0', tool_calls=[{'name': 'get_weather', 'args': {'city': 'sf'}, 'id': 'call_gZEyPpcgwnzsnee1HH4geKmB'}], usage_metadata={'input_tokens': 57, 'output_tokens': 14, 'total_tokens': 71})]}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: debug...\n",
-      "{'type': 'task_result', 'timestamp': '2024-06-25T16:12:29.802322+00:00', 'step': 1, 'payload': {'id': '8399d8fd-4b28-515a-b0e9-1679557c0953', 'name': 'agent', 'result': [('messages', [AIMessage(content='', additional_kwargs={'tool_calls': [{'id': 'call_gZEyPpcgwnzsnee1HH4geKmB', 'function': {'arguments': '{\"city\":\"sf\"}', 'name': 'get_weather'}, 'type': 'function'}]}, response_metadata={'token_usage': {'completion_tokens': 14, 'prompt_tokens': 57, 'total_tokens': 71}, 'model_name': 'gpt-4o-2024-05-13', 'system_fingerprint': 'fp_3e7d703517', 'finish_reason': 'tool_calls', 'logprobs': None}, id='run-37ca191f-f68f-4a70-8924-a40f90c8c0ed-0', tool_calls=[{'name': 'get_weather', 'args': {'city': 'sf'}, 'id': 'call_gZEyPpcgwnzsnee1HH4geKmB'}], usage_metadata={'input_tokens': 57, 'output_tokens': 14, 'total_tokens': 71})])]}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: debug...\n",
-      "{'type': 'task', 'timestamp': '2024-06-25T16:12:29.802738+00:00', 'step': 2, 'payload': {'id': 'f22971bf-6eff-55a2-84ab-fb97f629b133', 'name': 'tools', 'input': {'messages': [HumanMessage(content=\"what's the weather in sf\", id='44ff9154-9485-49c9-b679-791314cc19e3'), AIMessage(content='', additional_kwargs={'tool_calls': [{'id': 'call_gZEyPpcgwnzsnee1HH4geKmB', 'function': {'arguments': '{\"city\":\"sf\"}', 'name': 'get_weather'}, 'type': 'function'}]}, response_metadata={'token_usage': {'completion_tokens': 14, 'prompt_tokens': 57, 'total_tokens': 71}, 'model_name': 'gpt-4o-2024-05-13', 'system_fingerprint': 'fp_3e7d703517', 'finish_reason': 'tool_calls', 'logprobs': None}, id='run-37ca191f-f68f-4a70-8924-a40f90c8c0ed-0', tool_calls=[{'name': 'get_weather', 'args': {'city': 'sf'}, 'id': 'call_gZEyPpcgwnzsnee1HH4geKmB'}], usage_metadata={'input_tokens': 57, 'output_tokens': 14, 'total_tokens': 71})], 'is_last_step': False}, 'triggers': ['branch:agent:should_continue:tools']}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: updates...\n",
-      "{'tools': {'messages': [ToolMessage(content=\"It's always sunny in sf\", name='get_weather', tool_call_id='call_gZEyPpcgwnzsnee1HH4geKmB')]}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: debug...\n",
-      "{'type': 'task_result', 'timestamp': '2024-06-25T16:12:29.806676+00:00', 'step': 2, 'payload': {'id': 'f22971bf-6eff-55a2-84ab-fb97f629b133', 'name': 'tools', 'result': [('messages', [ToolMessage(content=\"It's always sunny in sf\", name='get_weather', tool_call_id='call_gZEyPpcgwnzsnee1HH4geKmB')])]}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: debug...\n",
-      "{'type': 'task', 'timestamp': '2024-06-25T16:12:29.807014+00:00', 'step': 3, 'payload': {'id': '3e1a91b9-b94c-56a7-ace5-6fd8ee73fe8d', 'name': 'agent', 'input': {'messages': [HumanMessage(content=\"what's the weather in sf\", id='44ff9154-9485-49c9-b679-791314cc19e3'), AIMessage(content='', additional_kwargs={'tool_calls': [{'id': 'call_gZEyPpcgwnzsnee1HH4geKmB', 'function': {'arguments': '{\"city\":\"sf\"}', 'name': 'get_weather'}, 'type': 'function'}]}, response_metadata={'token_usage': {'completion_tokens': 14, 'prompt_tokens': 57, 'total_tokens': 71}, 'model_name': 'gpt-4o-2024-05-13', 'system_fingerprint': 'fp_3e7d703517', 'finish_reason': 'tool_calls', 'logprobs': None}, id='run-37ca191f-f68f-4a70-8924-a40f90c8c0ed-0', tool_calls=[{'name': 'get_weather', 'args': {'city': 'sf'}, 'id': 'call_gZEyPpcgwnzsnee1HH4geKmB'}], usage_metadata={'input_tokens': 57, 'output_tokens': 14, 'total_tokens': 71}), ToolMessage(content=\"It's always sunny in sf\", name='get_weather', id='afc3ceaa-6663-4f7a-b874-e77e5515b175', tool_call_id='call_gZEyPpcgwnzsnee1HH4geKmB')], 'is_last_step': False}, 'triggers': ['tools']}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: updates...\n",
-      "{'agent': {'messages': [AIMessage(content='The weather in San Francisco is currently sunny.', response_metadata={'token_usage': {'completion_tokens': 10, 'prompt_tokens': 84, 'total_tokens': 94}, 'model_name': 'gpt-4o-2024-05-13', 'system_fingerprint': 'fp_3e7d703517', 'finish_reason': 'stop', 'logprobs': None}, id='run-575efeca-fdeb-4b4f-80f8-08ff177c34a5-0', usage_metadata={'input_tokens': 84, 'output_tokens': 10, 'total_tokens': 94})]}}\n",
-      "\n",
-      "\n",
-      "\n",
-      "Receiving new event of type: debug...\n",
-      "{'type': 'task_result', 'timestamp': '2024-06-25T16:12:30.355658+00:00', 'step': 3, 'payload': {'id': '3e1a91b9-b94c-56a7-ace5-6fd8ee73fe8d', 'name': 'agent', 'result': [('messages', [AIMessage(content='The weather in San Francisco is currently sunny.', response_metadata={'token_usage': {'completion_tokens': 10, 'prompt_tokens': 84, 'total_tokens': 94}, 'model_name': 'gpt-4o-2024-05-13', 'system_fingerprint': 'fp_3e7d703517', 'finish_reason': 'stop', 'logprobs': None}, id='run-575efeca-fdeb-4b4f-80f8-08ff177c34a5-0', usage_metadata={'input_tokens': 84, 'output_tokens': 10, 'total_tokens': 94})])]}}\n",
-      "\n",
-      "\n",
-      "\n"
-     ]
-    }
-   ],
-   "source": [
-    "inputs = {\"messages\": [(\"human\", \"what's the weather in sf\")]}\n",
-    "async for event, chunk in graph.astream(inputs, stream_mode=[\"updates\", \"debug\"]):\n",
-    "    print(f\"Receiving new event of type: {event}...\")\n",
-    "    print(chunk)\n",
-    "    print(\"\\n\\n\")"
-   ]
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.11.9"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 5
-}

docs/docs/llms-txt-overview.md

@@ -1,13 +1,20 @@
-# LLMs-txt for LangGraph
+# LLMs-txt Overview
 
 ## Overview
 
-LangGraph provides documentation files in the [`llms.txt`](https://llmstxt.org/) format, specifically `llms.txt` and `llms-full.txt`. These files allow large language models (LLMs) and agents to access programming documentation and APIs, particularly useful within integrated development environments (IDEs).
+Below you can find a list of documentation files in the [`llms.txt`](https://llmstxt.org/) format, specifically `llms.txt` and `llms-full.txt`. These files allow large language models (LLMs) and agents to access programming documentation and APIs, particularly useful within integrated development environments (IDEs).
 
 | Language Version | llms.txt                                                                                                   | llms-full.txt                                                                                                        |
 |------------------|------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------|
 | LangGraph Python | [https://langchain-ai.github.io/langgraph/llms.txt](https://langchain-ai.github.io/langgraph/llms.txt)     | [https://langchain-ai.github.io/langgraph/llms-full.txt](https://langchain-ai.github.io/langgraph/llms-full.txt)     |
 | LangGraph JS     | [https://langchain-ai.github.io/langgraphjs/llms.txt](https://langchain-ai.github.io/langgraphjs/llms.txt) | [https://langchain-ai.github.io/langgraphjs/llms-full.txt](https://langchain-ai.github.io/langgraphjs/llms-full.txt) |
+| LangChain Python | [https://python.langchain.com/llms.txt](https://python.langchain.com/llms.txt)                             | N/A                                                                                                                  |
+| LangChain JS     | [https://js.langchain.com/llms.txt](https://js.langchain.com/llms.txt)                                     | N/A                                                                                                                  |
+
+!!! info "Review the output"
+
+    Even with access to up-to-date documentation, current state-of-the-art models may not always generate correct code. Treat the generated code as a starting point, and always review it before shipping
+    code to production.
 
 ## Differences Between `llms.txt` and `llms-full.txt`
 
@@ -19,9 +26,17 @@ A key consideration when using `llms-full.txt` is its size. For extensive docume
 
 ## Using `llms.txt` via an MCP Server
 
-As of March 9, 2025, IDEs [do not yet have robust native support for `llms.txt`](https://x.com/jeremyphoward/status/1902109312216129905?t=1eHFv2vdNdAckajnug0_Vw&s=19). However, you can utilize `llms.txt` effectively through an MCP server.
+As of March 9, 2025, IDEs [do not yet have robust native support for `llms.txt`](https://x.com/jeremyphoward/status/1902109312216129905?t=1eHFv2vdNdAckajnug0_Vw&s=19). However, you can still use `llms.txt` effectively through an MCP server.
 
-We provide an MCP server specifically designed to serve documentation, called [`mcpdoc`](https://github.com/langchain-ai/mcpdoc). This setup is compatible with IDEs and platforms such as Cursor, Windsurf, Claude, and Claude Code. Instructions for using `mcpdoc` with these tools are available in the repository.
+### 🚀 Use the `mcpdoc` Server
+
+We provide an **MCP server** that was designed to serve documentation for LLMs and IDEs:
+
+👉 **[langchain-ai/mcpdoc GitHub Repository](https://github.com/langchain-ai/mcpdoc)**
+
+This MCP server allows integrating `llms.txt` into tools like **Cursor**, **Windsurf**, **Claude**, and **Claude Code**.
+
+📘 **Setup instructions and usage examples** are available in the repository.
 
 ## Using `llms-full.txt`
 

docs/docs/stylesheets/version_admonitions.css

@@ -0,0 +1,38 @@
+:root {
+  --md-admonition-icon--version-added: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h4l3 3 3-3h4c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2m0 16h-4.2l-.8.8-2 2-2-2-.8-.8H5V4h14z"/><path d="M11 15h2v2h-2v-2m0-10h2v8h-2V5"/></svg>');
+  --md-admonition-icon--version-changed: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h4l3 3 3-3h4c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2m0 16h-4.2l-.8.8-2 2-2-2-.8-.8H5V4h14z"/><path d="M15 11h-2V9h-2v2H9v2h2v2h2v-2h2v-2Z"/></svg>');
+}
+
+.md-typeset .admonition.version-added,
+.md-typeset details.version-added {
+  border-color: rgb(0, 191, 165);
+}
+
+.md-typeset .version-added > .admonition-title,
+.md-typeset .version-added > summary {
+  background-color: rgba(0, 191, 165, 0.1);
+}
+
+.md-typeset .version-added > .admonition-title::before,
+.md-typeset .version-added > summary::before {
+  background-color: rgb(0, 191, 165);
+  -webkit-mask-image: var(--md-admonition-icon--version-added);
+          mask-image: var(--md-admonition-icon--version-added);
+}
+
+.md-typeset .admonition.version-changed,
+.md-typeset details.version-changed {
+  border-color: rgb(100, 221, 23);
+}
+
+.md-typeset .version-changed > .admonition-title,
+.md-typeset .version-changed > summary {
+  background-color: rgba(100, 221, 23, 0.1);
+}
+
+.md-typeset .version-changed > .admonition-title::before,
+.md-typeset .version-changed > summary::before {
+  background-color: rgb(100, 221, 23);
+  -webkit-mask-image: var(--md-admonition-icon--version-changed);
+          mask-image: var(--md-admonition-icon--version-changed);
+} 

docs/mkdocs.yml

@@ -256,6 +256,8 @@ nav:
                 - cloud/how-tos/invoke_studio.md
                 - cloud/how-tos/threads_studio.md
                 - cloud/how-tos/datasets_studio.md
+                - cloud/how-tos/iterate_graph_studio.md
+                - cloud/how-tos/clone_traces_studio.md
       - Concepts:
         - concepts/index.md
         - LangGraph:
@@ -503,3 +505,5 @@ validation:
   not_found: info
 copyright: >
   Copyright &copy; 2025 LangChain, Inc | <a href="#__consent">Consent Preferences</a>
+extra_css:
+  - stylesheets/version_admonitions.css

docs/pyproject.toml

@@ -64,6 +64,8 @@ grandalf = "^0.8"
 pyppeteer = "^2.0.0"
 networkx = "^3.3"
 autogen = { version = "^0.3.0", python = "<3.13,>=3.8" }
+pytest = "^8.3.5"
+pytest-check-links = "^0.10.1"
 
 [tool.poetry.group.test]
 optional = true

libs/checkpoint-postgres/langgraph/store/postgres/base.py

@@ -684,7 +684,7 @@ class PostgresStore(BaseStore, BasePostgresStore[_pg_internal.Conn]):
             store.put(("docs",), "doc2", {"text": "Other guide"}, index=False) # don't index
 
             # Search by similarity
-            results = store.search(("docs",), "programming guides", limit=2)
+            results = store.search(("docs",), query="programming guides", limit=2)
         ```
 
     Note:

libs/checkpoint-postgres/poetry.lock

@@ -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 = "annotated-types"
@@ -6,6 +6,7 @@ version = "0.7.0"
 description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 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"},
@@ -17,6 +18,7 @@ version = "4.8.0"
 description = "High level compatibility layer for multiple asynchronous event loop implementations"
 optional = false
 python-versions = ">=3.9"
+groups = ["main", "dev"]
 files = [
     {file = "anyio-4.8.0-py3-none-any.whl", hash = "sha256:b5011f270ab5eb0abf13385f851315585cc37ef330dd88e27ec3d34d651fd47a"},
     {file = "anyio-4.8.0.tar.gz", hash = "sha256:1d9fe889df5212298c0c0723fa20479d1b94883a2df44bd3897aa91083316f7a"},
@@ -39,6 +41,7 @@ version = "2025.1.31"
 description = "Python package for providing Mozilla's CA Bundle."
 optional = false
 python-versions = ">=3.6"
+groups = ["main", "dev"]
 files = [
     {file = "certifi-2025.1.31-py3-none-any.whl", hash = "sha256:ca78db4565a652026a4db2bcdf68f2fb589ea80d0be70e03929ed730746b84fe"},
     {file = "certifi-2025.1.31.tar.gz", hash = "sha256:3d5da6925056f6f18f119200434a4780a94263f10d1c21d032a6f6b2baa20651"},
@@ -50,6 +53,8 @@ version = "1.17.1"
 description = "Foreign Function Interface for Python calling C code."
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
+markers = "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"},
@@ -129,6 +134,7 @@ version = "3.4.1"
 description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
 optional = false
 python-versions = ">=3.7"
+groups = ["main", "dev"]
 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"},
@@ -230,6 +236,7 @@ version = "2.4.1"
 description = "Fix common misspellings in text files"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
     {file = "codespell-2.4.1-py3-none-any.whl", hash = "sha256:3dadafa67df7e4a3dbf51e0d7315061b80d265f9552ebd699b3dd6834b47e425"},
     {file = "codespell-2.4.1.tar.gz", hash = "sha256:299fcdcb09d23e81e35a671bbe746d5ad7e8385972e65dbb833a2eaac33c01e5"},
@@ -247,6 +254,8 @@ 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 = ["dev"]
+markers = "sys_platform == \"win32\""
 files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -258,6 +267,8 @@ 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"},
@@ -272,6 +283,7 @@ version = "0.14.0"
 description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
 optional = false
 python-versions = ">=3.7"
+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"},
@@ -283,6 +295,7 @@ version = "1.0.7"
 description = "A minimal low-level HTTP client."
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
     {file = "httpcore-1.0.7-py3-none-any.whl", hash = "sha256:a3fff8f43dc260d5bd363d9f9cf1830fa3a458b332856f34282de498ed420edd"},
     {file = "httpcore-1.0.7.tar.gz", hash = "sha256:8551cb62a169ec7162ac7be8d4817d561f60e08eaa485234898414bb5a8a0b4c"},
@@ -304,6 +317,7 @@ version = "0.28.1"
 description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
     {file = "httpx-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
     {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
@@ -328,6 +342,7 @@ version = "3.10"
 description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.6"
+groups = ["main", "dev"]
 files = [
     {file = "idna-3.10-py3-none-any.whl", hash = "sha256:946d195a0d259cbba61165e88e65941f16e9b36ea6ddb97f00452bae8b1287d3"},
     {file = "idna-3.10.tar.gz", hash = "sha256:12f65c9b470abda6dc35cf8e63cc574b1c52b11df2c86030af0ac09b01b13ea9"},
@@ -342,6 +357,7 @@ 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"},
@@ -353,6 +369,7 @@ version = "1.33"
 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"]
 files = [
     {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
     {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -367,6 +384,7 @@ version = "3.0.0"
 description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
+groups = ["main", "dev"]
 files = [
     {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
     {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -374,13 +392,14 @@ files = [
 
 [[package]]
 name = "langchain-core"
-version = "0.3.42"
+version = "0.3.48"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
+groups = ["main", "dev"]
 files = [
-    {file = "langchain_core-0.3.42-py3-none-any.whl", hash = "sha256:5caadb508442e9794aa5dc5bbcc6ac21d2b1ecce856d98c0be82d36350abeefd"},
-    {file = "langchain_core-0.3.42.tar.gz", hash = "sha256:3412bb9e9baa14d9c55c4da06eb9c55a4e2e94b856d030952396781f0d8bc736"},
+    {file = "langchain_core-0.3.48-py3-none-any.whl", hash = "sha256:21e4fe84262b9c7ad8aefe7816439ede130893f8a64b8c965cd9695c2be91c73"},
+    {file = "langchain_core-0.3.48.tar.gz", hash = "sha256:be4b2fe36d8a11fb4b6b13e0808b12aea9f25e345624ffafe1d606afb6059f21"},
 ]
 
 [package.dependencies]
@@ -401,12 +420,13 @@ version = "2.0.21"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
 python-versions = "^3.9.0,<4.0"
+groups = ["main", "dev"]
 files = []
 develop = true
 
 [package.dependencies]
 langchain-core = ">=0.2.38,<0.4"
-msgpack = "^1.1.0"
+ormsgpack = "^1.8.0"
 
 [package.source]
 type = "directory"
@@ -418,6 +438,7 @@ version = "0.3.13"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 optional = false
 python-versions = "<4.0,>=3.9"
+groups = ["main", "dev"]
 files = [
     {file = "langsmith-0.3.13-py3-none-any.whl", hash = "sha256:73aaf52bbc293b9415fff4f6dad68df40658081eb26c9cb2c7bd1ff57cedd695"},
     {file = "langsmith-0.3.13.tar.gz", hash = "sha256:14014058cff408772acb93344e03cb64174837292d5f1ae09b2c8c1d8df45e92"},
@@ -439,85 +460,13 @@ zstandard = ">=0.23.0,<0.24.0"
 langsmith-pyo3 = ["langsmith-pyo3 (>=0.1.0rc2,<0.2.0)"]
 pytest = ["pytest (>=7.0.0)", "rich (>=13.9.4,<14.0.0)"]
 
-[[package]]
-name = "msgpack"
-version = "1.1.0"
-description = "MessagePack serializer"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:7ad442d527a7e358a469faf43fda45aaf4ac3249c8310a82f0ccff9164e5dccd"},
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:74bed8f63f8f14d75eec75cf3d04ad581da6b914001b474a5d3cd3372c8cc27d"},
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:914571a2a5b4e7606997e169f64ce53a8b1e06f2cf2c3a7273aa106236d43dd5"},
-    {file = "msgpack-1.1.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c921af52214dcbb75e6bdf6a661b23c3e6417f00c603dd2070bccb5c3ef499f5"},
-    {file = "msgpack-1.1.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d8ce0b22b890be5d252de90d0e0d119f363012027cf256185fc3d474c44b1b9e"},
-    {file = "msgpack-1.1.0-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:73322a6cc57fcee3c0c57c4463d828e9428275fb85a27aa2aa1a92fdc42afd7b"},
-    {file = "msgpack-1.1.0-cp310-cp310-musllinux_1_2_aarch64.whl", hash = "sha256:e1f3c3d21f7cf67bcf2da8e494d30a75e4cf60041d98b3f79875afb5b96f3a3f"},
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-    {file = "msgpack-1.1.0-cp310-cp310-win_amd64.whl", hash = "sha256:685ec345eefc757a7c8af44a3032734a739f8c45d1b0ac45efc5d8977aa4720f"},
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 description = "Optional static typing for Python"
 optional = false
 python-versions = ">=3.9"
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 optional = false
 python-versions = ">=3.5"
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 optional = false
 python-versions = ">=3.8"
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 files = [
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 [[package]]
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 version = "24.2"
 description = "Core utilities for Python packages"
 optional = false
 python-versions = ">=3.8"
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 files = [
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@@ -681,6 +669,7 @@ version = "1.5.0"
 description = "plugin and hook calling mechanisms for python"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
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 description = "PostgreSQL database adapter for Python"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
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@@ -720,6 +710,8 @@ version = "3.2.5"
 description = "PostgreSQL database adapter for Python -- C optimisation distribution"
 optional = false
 python-versions = ">=3.8"
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@@ -794,6 +786,7 @@ version = "3.2.6"
 description = "Connection Pool for Psycopg"
 optional = false
 python-versions = ">=3.8"
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 files = [
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@@ -808,6 +801,8 @@ version = "2.22"
 description = "C parser in Python"
 optional = false
 python-versions = ">=3.8"
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 files = [
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@@ -819,6 +814,7 @@ version = "2.10.6"
 description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
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@@ -839,6 +835,7 @@ version = "2.27.2"
 description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
     {file = "pydantic_core-2.27.2-cp310-cp310-macosx_10_12_x86_64.whl", hash = "sha256:2d367ca20b2f14095a8f4fa1210f5a7b78b8a20009ecced6b12818f455b1e9fa"},
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@@ -951,6 +948,7 @@ 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"},
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@@ -973,6 +971,7 @@ 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"},
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@@ -991,6 +990,7 @@ 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"},
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@@ -1008,6 +1008,7 @@ version = "0.4.3"
 description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
+groups = ["dev"]
 files = [
     {file = "pytest_watcher-0.4.3-py3-none-any.whl", hash = "sha256:d59b1e1396f33a65ea4949b713d6884637755d641646960056a90b267c3460f9"},
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@@ -1023,6 +1024,7 @@ version = "6.0.2"
 description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
     {file = "PyYAML-6.0.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:0a9a2848a5b7feac301353437eb7d5957887edbf81d56e903999a75a3d743086"},
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@@ -1085,6 +1087,7 @@ version = "2.32.3"
 description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
     {file = "requests-2.32.3-py3-none-any.whl", hash = "sha256:70761cfe03c773ceb22aa2f671b4757976145175cdfca038c02654d061d6dcc6"},
     {file = "requests-2.32.3.tar.gz", hash = "sha256:55365417734eb18255590a9ff9eb97e9e1da868d4ccd6402399eaf68af20a760"},
@@ -1106,6 +1109,7 @@ version = "1.0.0"
 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"]
 files = [
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@@ -1120,6 +1124,7 @@ 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"},
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@@ -1147,6 +1152,7 @@ version = "1.3.1"
 description = "Sniff out which async library your code is running under"
 optional = false
 python-versions = ">=3.7"
+groups = ["main", "dev"]
 files = [
     {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"},
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@@ -1158,6 +1164,7 @@ version = "9.0.0"
 description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
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     {file = "tenacity-9.0.0.tar.gz", hash = "sha256:807f37ca97d62aa361264d497b0e31e92b8027044942bfa756160d908320d73b"},
@@ -1173,6 +1180,8 @@ 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"},
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@@ -1214,6 +1223,7 @@ 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"},
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@@ -1225,6 +1235,8 @@ version = "2025.1"
 description = "Provider of IANA time zone data"
 optional = false
 python-versions = ">=2"
+groups = ["main", "dev"]
+markers = "sys_platform == \"win32\""
 files = [
     {file = "tzdata-2025.1-py2.py3-none-any.whl", hash = "sha256:7e127113816800496f027041c570f50bcd464a020098a3b6b199517772303639"},
     {file = "tzdata-2025.1.tar.gz", hash = "sha256:24894909e88cdb28bd1636c6887801df64cb485bd593f2fd83ef29075a81d694"},
@@ -1236,6 +1248,7 @@ version = "2.3.0"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 optional = false
 python-versions = ">=3.9"
+groups = ["main", "dev"]
 files = [
     {file = "urllib3-2.3.0-py3-none-any.whl", hash = "sha256:1cee9ad369867bfdbbb48b7dd50374c0967a0bb7710050facf0dd6911440e3df"},
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@@ -1253,6 +1266,7 @@ 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"},
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@@ -1295,6 +1309,7 @@ version = "0.23.0"
 description = "Zstandard bindings for Python"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
     {file = "zstandard-0.23.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:bf0a05b6059c0528477fba9054d09179beb63744355cab9f38059548fedd46a9"},
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@@ -1402,6 +1417,6 @@ cffi = {version = ">=1.11", markers = "platform_python_implementation == \"PyPy\
 cffi = ["cffi (>=1.11)"]
 
 [metadata]
-lock-version = "2.0"
+lock-version = "2.1"
 python-versions = "^3.9.0,<4.0"
 content-hash = "4b0efdd115566f294fcd876334f9c3787aafc81f2689473759d88189a71d4635"

libs/checkpoint-sqlite/poetry.lock

@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.1 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 = "aiosqlite"
@@ -350,7 +350,7 @@ typing-extensions = ">=4.7"
 
 [[package]]
 name = "langgraph-checkpoint"
-version = "2.0.15"
+version = "2.0.21"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 optional = false
 python-versions = "^3.9.0,<4.0"
@@ -360,7 +360,7 @@ develop = true
 
 [package.dependencies]
 langchain-core = ">=0.2.38,<0.4"
-msgpack = "^1.1.0"
+ormsgpack = "^1.8.0"
 
 [package.source]
 type = "directory"
@@ -387,80 +387,6 @@ pydantic = [
 ]
 requests = ">=2,<3"
 
-[[package]]
-name = "msgpack"
-version = "1.1.0"
-description = "MessagePack serializer"
-optional = false
-python-versions = ">=3.8"
-groups = ["main", "dev"]
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-    {file = "msgpack-1.1.0-cp39-cp39-musllinux_1_2_x86_64.whl", hash = "sha256:c5a91481a3cc573ac8c0d9aace09345d989dc4a0202b7fcb312c88c26d4e71a8"},
-    {file = "msgpack-1.1.0-cp39-cp39-win32.whl", hash = "sha256:f80bc7d47f76089633763f952e67f8214cb7b3ee6bfa489b3cb6a84cfac114cd"},
-    {file = "msgpack-1.1.0-cp39-cp39-win_amd64.whl", hash = "sha256:4d1b7ff2d6146e16e8bd665ac726a89c74163ef8cd39fa8c1087d4e52d3a2325"},
-    {file = "msgpack-1.1.0.tar.gz", hash = "sha256:dd432ccc2c72b914e4cb77afce64aab761c1137cc698be3984eee260bcb2896e"},
-]
-
 [[package]]
 name = "mypy"
 version = "1.11.2"
@@ -584,6 +510,42 @@ files = [
     {file = "orjson-3.10.6.tar.gz", hash = "sha256:e54b63d0a7c6c54a5f5f726bc93a2078111ef060fec4ecbf34c5db800ca3b3a7"},
 ]
 
+[[package]]
+name = "ormsgpack"
+version = "1.9.0"
+description = "Fast, correct Python msgpack library supporting dataclasses, datetimes, and numpy"
+optional = false
+python-versions = ">=3.9"
+groups = ["main", "dev"]
+files = [
+    {file = "ormsgpack-1.9.0-cp310-cp310-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:9c7cc221489aaf8bf394225a275edf068f3531529def415a8e6e32d6228ee138"},
+    {file = "ormsgpack-1.9.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:42a5c5028417e710e5169c77d90b08891299f77ffd87abbb2855ffc62314740a"},
+    {file = "ormsgpack-1.9.0-cp310-cp310-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:350fdfac11215234b14d7fb484cf8f3f524eb0e7c6a3614bf878f4d034c1cef2"},
+    {file = "ormsgpack-1.9.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ebb49ca6d3f8dca7b667397016cb2cab7e6581b1d85b30f2697824479150e31e"},
+    {file = "ormsgpack-1.9.0-cp310-cp310-win_amd64.whl", hash = "sha256:ec9ad897bf00c4933bea519d505b82e20f9e0972bdd458dd1e06d6d5e0b8eec6"},
+    {file = "ormsgpack-1.9.0-cp311-cp311-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:5b473282dacddf20f03b99971e3fc3691bbeafc6142c8e51e80f137e35147ec9"},
+    {file = "ormsgpack-1.9.0-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:84bbd03ebca6efb38cb697e2e24f9ae22feb58ef1e6e664239ae68f4ccb3db76"},
+    {file = "ormsgpack-1.9.0-cp311-cp311-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:49e7e3612f1930267ddf85e914ba417bf5fa801e4a045acb466fa8a8bf7f8bf8"},
+    {file = "ormsgpack-1.9.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:da0aa79373e70c8ad32c0a23f410a7d611a13ea4f1e427f501307a487caf0557"},
+    {file = "ormsgpack-1.9.0-cp311-cp311-win_amd64.whl", hash = "sha256:6dfecbe00e504ccf946fc168ad56d038682fd17592da1be44368ab996fbeae3e"},
+    {file = "ormsgpack-1.9.0-cp312-cp312-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:6f13a538674ee42764278b418f9e97743401cd3895c7c473d45abd03f650169b"},
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+    {file = "ormsgpack-1.9.0-cp312-cp312-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:4b9de72dc94f73d63047ad40cfdd6e9dd2b28c51e9ccbc72117d5146b4f5fc18"},
+    {file = "ormsgpack-1.9.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:4577cf304fa4c079092280e9ed4858cd9bd8b1475a803c206a449a3830b499ef"},
+    {file = "ormsgpack-1.9.0-cp312-cp312-win_amd64.whl", hash = "sha256:32302872cf10e4eccc8437cdaf46ac8e5e56cbb7519734a0b8f8a1ed2cbdfd44"},
+    {file = "ormsgpack-1.9.0-cp313-cp313-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:6ccbdf412af6c46b3549929d90a960ebe1b45f9b3e6c530774cd29de0846ce4d"},
+    {file = "ormsgpack-1.9.0-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:5a6e113502c002f12f6bcf100eb8c2ccb85d1e75931ede669765ffaf5cc0e69d"},
+    {file = "ormsgpack-1.9.0-cp313-cp313-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:afd8bc92bb903fc37ce16921bb522d205ba02b90871dc4edc6fac13ac9226481"},
+    {file = "ormsgpack-1.9.0-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:800d918e6bca16d01c382015a4c05b00cabafa7c2070126b7feaefe2cf1437f0"},
+    {file = "ormsgpack-1.9.0-cp313-cp313-win_amd64.whl", hash = "sha256:305ec6de5fd687b7de0861673e967b4f6474a634b159a3a82e481707308203c9"},
+    {file = "ormsgpack-1.9.0-cp39-cp39-macosx_10_12_x86_64.macosx_11_0_arm64.macosx_10_12_universal2.whl", hash = "sha256:ecd28f5e0a07578972c9681034f1a6413ac0d0f016ff09db47dd9a7e8191d57a"},
+    {file = "ormsgpack-1.9.0-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:0767bde96b932c70f3e1dd0e82a5c3dd969e2223edd7e8b3303cba1fa38473d1"},
+    {file = "ormsgpack-1.9.0-cp39-cp39-manylinux_2_17_armv7l.manylinux2014_armv7l.whl", hash = "sha256:58b7c35bb813bb461b2bf848e99e129d536f6ed47f1d1c49e3de02748fe8554f"},
+    {file = "ormsgpack-1.9.0-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:9aa6bc3904fbc4e6538e1bb3f2748f5cbc34906597724a3f0b8f578972a21fae"},
+    {file = "ormsgpack-1.9.0-cp39-cp39-win_amd64.whl", hash = "sha256:09f7b11abc0b493735870f3dea5daf36a147916b0609f394d45373f5ae4b6850"},
+    {file = "ormsgpack-1.9.0.tar.gz", hash = "sha256:015e8e6e74e5a1c2bcb9c25fdd8205cad0e8e2d1d32c6a259615aa189b61b8b4"},
+]
+
 [[package]]
 name = "packaging"
 version = "24.1"

libs/checkpoint/langgraph/checkpoint/serde/jsonplus.py

@@ -20,7 +20,7 @@ from ipaddress import (
 from typing import Any, Callable, Optional, Union, cast
 from uuid import UUID
 
-import msgpack  # type: ignore[import-untyped]
+import ormsgpack
 from langchain_core.load.load import Reviver
 from langchain_core.load.serializable import Serializable
 from zoneinfo import ZoneInfo
@@ -33,6 +33,15 @@ LC_REVIVER = Reviver()
 
 
 class JsonPlusSerializer(SerializerProtocol):
+    def __init__(
+        self, *, __unpack_ext_hook__: Optional[Callable[[int, bytes], Any]] = None
+    ) -> None:
+        self._unpack_ext_hook = (
+            __unpack_ext_hook__
+            if __unpack_ext_hook__ is not None
+            else _msgpack_ext_hook
+        )
+
     def _encode_constructor_args(
         self,
         constructor: Union[Callable, type[Any]],
@@ -192,8 +201,10 @@ class JsonPlusSerializer(SerializerProtocol):
         else:
             try:
                 return "msgpack", _msgpack_enc(obj)
-            except UnicodeEncodeError:
-                return "json", self.dumps(obj)
+            except ormsgpack.MsgpackEncodeError as exc:
+                if "valid UTF-8" in str(exc):
+                    return "json", self.dumps(obj)
+                raise exc
 
     def loads(self, data: bytes) -> Any:
         return json.loads(data, object_hook=self._reviver)
@@ -207,8 +218,8 @@ class JsonPlusSerializer(SerializerProtocol):
         elif type_ == "json":
             return self.loads(data_)
         elif type_ == "msgpack":
-            return msgpack.unpackb(
-                data_, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            return ormsgpack.unpackb(
+                data_, ext_hook=self._unpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
         else:
             raise NotImplementedError(f"Unknown serialization type: {type_}")
@@ -224,9 +235,9 @@ EXT_PYDANTIC_V1 = 4
 EXT_PYDANTIC_V2 = 5
 
 
-def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
+def _msgpack_default(obj: Any) -> Union[str, ormsgpack.Ext]:
     if hasattr(obj, "model_dump") and callable(obj.model_dump):  # pydantic v2
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_PYDANTIC_V2,
             _msgpack_enc(
                 (
@@ -238,7 +249,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif hasattr(obj, "get_secret_value") and callable(obj.get_secret_value):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (
@@ -249,7 +260,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif hasattr(obj, "dict") and callable(obj.dict):  # pydantic v1
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_PYDANTIC_V1,
             _msgpack_enc(
                 (
@@ -260,7 +271,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif hasattr(obj, "_asdict") and callable(obj._asdict):  # namedtuple
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_KW_ARGS,
             _msgpack_enc(
                 (
@@ -271,56 +282,63 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, pathlib.Path):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_POS_ARGS,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, obj.parts),
             ),
         )
     elif isinstance(obj, re.Pattern):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_POS_ARGS,
             _msgpack_enc(
                 ("re", "compile", (obj.pattern, obj.flags)),
             ),
         )
     elif isinstance(obj, UUID):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, obj.hex),
             ),
         )
+    elif isinstance(obj, bytearray):
+        return ormsgpack.Ext(
+            EXT_CONSTRUCTOR_SINGLE_ARG,
+            _msgpack_enc(
+                (obj.__class__.__module__, obj.__class__.__name__, bytes(obj)),
+            ),
+        )
     elif isinstance(obj, decimal.Decimal):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, str(obj)),
             ),
         )
     elif isinstance(obj, (set, frozenset, deque)):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, tuple(obj)),
             ),
         )
     elif isinstance(obj, (IPv4Address, IPv4Interface, IPv4Network)):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, str(obj)),
             ),
         )
     elif isinstance(obj, (IPv6Address, IPv6Interface, IPv6Network)):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, str(obj)),
             ),
         )
     elif isinstance(obj, datetime):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_METHOD_SINGLE_ARG,
             _msgpack_enc(
                 (
@@ -332,7 +350,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, timedelta):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_POS_ARGS,
             _msgpack_enc(
                 (
@@ -343,7 +361,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, date):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_POS_ARGS,
             _msgpack_enc(
                 (
@@ -354,7 +372,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, time):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_KW_ARGS,
             _msgpack_enc(
                 (
@@ -372,7 +390,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, timezone):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_POS_ARGS,
             _msgpack_enc(
                 (
@@ -383,21 +401,21 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, ZoneInfo):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, obj.key),
             ),
         )
     elif isinstance(obj, Enum):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_SINGLE_ARG,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, obj.value),
             ),
         )
     elif isinstance(obj, SendProtocol):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_POS_ARGS,
             _msgpack_enc(
                 (obj.__class__.__module__, obj.__class__.__name__, (obj.node, obj.arg)),
@@ -405,7 +423,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
         )
     elif dataclasses.is_dataclass(obj):
         # doesn't use dataclasses.asdict to avoid deepcopy and recursion
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_KW_ARGS,
             _msgpack_enc(
                 (
@@ -419,7 +437,7 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
             ),
         )
     elif isinstance(obj, Item):
-        return msgpack.ExtType(
+        return ormsgpack.Ext(
             EXT_CONSTRUCTOR_KW_ARGS,
             _msgpack_enc(
                 (
@@ -429,7 +447,6 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
                 ),
             ),
         )
-
     elif isinstance(obj, BaseException):
         return repr(obj)
     else:
@@ -439,8 +456,8 @@ def _msgpack_default(obj: Any) -> Union[str, msgpack.ExtType]:
 def _msgpack_ext_hook(code: int, data: bytes) -> Any:
     if code == EXT_CONSTRUCTOR_SINGLE_ARG:
         try:
-            tup = msgpack.unpackb(
-                data, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
             # module, name, arg
             return getattr(importlib.import_module(tup[0]), tup[1])(tup[2])
@@ -448,8 +465,8 @@ def _msgpack_ext_hook(code: int, data: bytes) -> Any:
             return
     elif code == EXT_CONSTRUCTOR_POS_ARGS:
         try:
-            tup = msgpack.unpackb(
-                data, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
             # module, name, args
             return getattr(importlib.import_module(tup[0]), tup[1])(*tup[2])
@@ -457,8 +474,8 @@ def _msgpack_ext_hook(code: int, data: bytes) -> Any:
             return
     elif code == EXT_CONSTRUCTOR_KW_ARGS:
         try:
-            tup = msgpack.unpackb(
-                data, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
             # module, name, args
             return getattr(importlib.import_module(tup[0]), tup[1])(**tup[2])
@@ -466,8 +483,8 @@ def _msgpack_ext_hook(code: int, data: bytes) -> Any:
             return
     elif code == EXT_METHOD_SINGLE_ARG:
         try:
-            tup = msgpack.unpackb(
-                data, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
             # module, name, arg, method
             return getattr(getattr(importlib.import_module(tup[0]), tup[1]), tup[3])(
@@ -477,8 +494,8 @@ def _msgpack_ext_hook(code: int, data: bytes) -> Any:
             return
     elif code == EXT_PYDANTIC_V1:
         try:
-            tup = msgpack.unpackb(
-                data, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
             # module, name, kwargs
             cls = getattr(importlib.import_module(tup[0]), tup[1])
@@ -495,8 +512,8 @@ def _msgpack_ext_hook(code: int, data: bytes) -> Any:
                 return
     elif code == EXT_PYDANTIC_V2:
         try:
-            tup = msgpack.unpackb(
-                data, ext_hook=_msgpack_ext_hook, strict_map_key=False
+            tup = ormsgpack.unpackb(
+                data, ext_hook=_msgpack_ext_hook, option=ormsgpack.OPT_NON_STR_KEYS
             )
             # module, name, kwargs, method
             cls = getattr(importlib.import_module(tup[0]), tup[1])
@@ -513,5 +530,94 @@ def _msgpack_ext_hook(code: int, data: bytes) -> Any:
                 return
 
 
+def _msgpack_ext_hook_to_json(code: int, data: bytes) -> Any:
+    if code == EXT_CONSTRUCTOR_SINGLE_ARG:
+        try:
+            tup = ormsgpack.unpackb(
+                data,
+                ext_hook=_msgpack_ext_hook_to_json,
+                option=ormsgpack.OPT_NON_STR_KEYS,
+            )
+            if tup[0] == "uuid" and tup[1] == "UUID":
+                hex_ = tup[2]
+                return (
+                    f"{hex_[:8]}-{hex_[8:12]}-{hex_[12:16]}-{hex_[16:20]}-{hex_[20:]}"
+                )
+            # module, name, arg
+            return tup[2]
+        except Exception:
+            return
+    elif code == EXT_CONSTRUCTOR_POS_ARGS:
+        try:
+            tup = ormsgpack.unpackb(
+                data,
+                ext_hook=_msgpack_ext_hook_to_json,
+                option=ormsgpack.OPT_NON_STR_KEYS,
+            )
+            if tup[0] == "langgraph.types" and tup[1] == "Send":
+                from langgraph.types import Send  # type: ignore
+
+                return Send(*tup[2])
+            # module, name, args
+            return tup[2]
+        except Exception:
+            return
+    elif code == EXT_CONSTRUCTOR_KW_ARGS:
+        try:
+            tup = ormsgpack.unpackb(
+                data,
+                ext_hook=_msgpack_ext_hook_to_json,
+                option=ormsgpack.OPT_NON_STR_KEYS,
+            )
+            # module, name, args
+            return tup[2]
+        except Exception:
+            return
+    elif code == EXT_METHOD_SINGLE_ARG:
+        try:
+            tup = ormsgpack.unpackb(
+                data,
+                ext_hook=_msgpack_ext_hook_to_json,
+                option=ormsgpack.OPT_NON_STR_KEYS,
+            )
+            # module, name, arg, method
+            return tup[2]
+        except Exception:
+            return
+    elif code == EXT_PYDANTIC_V1:
+        try:
+            tup = ormsgpack.unpackb(
+                data,
+                ext_hook=_msgpack_ext_hook_to_json,
+                option=ormsgpack.OPT_NON_STR_KEYS,
+            )
+            # module, name, kwargs
+            return tup[2]
+        except Exception:
+            # for pydantic objects we can't find/reconstruct
+            # let's return the kwargs dict instead
+            return
+    elif code == EXT_PYDANTIC_V2:
+        try:
+            tup = ormsgpack.unpackb(
+                data,
+                ext_hook=_msgpack_ext_hook_to_json,
+                option=ormsgpack.OPT_NON_STR_KEYS,
+            )
+            # module, name, kwargs, method
+            return tup[2]
+        except Exception:
+            return
+
+
+_option = (
+    ormsgpack.OPT_NON_STR_KEYS
+    | ormsgpack.OPT_PASSTHROUGH_DATACLASS
+    | ormsgpack.OPT_PASSTHROUGH_DATETIME
+    | ormsgpack.OPT_PASSTHROUGH_ENUM
+    | ormsgpack.OPT_PASSTHROUGH_UUID
+)
+
+
 def _msgpack_enc(data: Any) -> bytes:
-    return msgpack.packb(data, default=_msgpack_default)
+    return ormsgpack.packb(data, default=_msgpack_default, option=_option)

libs/checkpoint/poetry.lock

@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 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 = "annotated-types"
@@ -6,6 +6,7 @@ version = "0.7.0"
 description = "Reusable constraint types to use with typing.Annotated"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 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"},
@@ -17,6 +18,7 @@ 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"},
@@ -28,6 +30,7 @@ version = "3.3.2"
 description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
 optional = false
 python-versions = ">=3.7.0"
+groups = ["main"]
 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"},
@@ -127,6 +130,7 @@ 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"},
@@ -144,6 +148,8 @@ 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 = ["dev"]
+markers = "sys_platform == \"win32\""
 files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
@@ -155,6 +161,7 @@ version = "0.6.7"
 description = "Easily serialize dataclasses to and from JSON."
 optional = false
 python-versions = "<4.0,>=3.7"
+groups = ["dev"]
 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"},
@@ -170,6 +177,8 @@ version = "1.2.2"
 description = "Backport of PEP 654 (exception groups)"
 optional = false
 python-versions = ">=3.7"
+groups = ["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"},
@@ -184,6 +193,7 @@ 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"},
@@ -195,6 +205,7 @@ 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"},
@@ -206,6 +217,7 @@ version = "1.33"
 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"]
 files = [
     {file = "jsonpatch-1.33-py2.py3-none-any.whl", hash = "sha256:0ae28c0cd062bbd8b8ecc26d7d164fbbea9652a1a3693f3b956c1eae5145dade"},
     {file = "jsonpatch-1.33.tar.gz", hash = "sha256:9fcd4009c41e6d12348b4a0ff2563ba56a2923a7dfee731d004e212e1ee5030c"},
@@ -220,6 +232,7 @@ version = "3.0.0"
 description = "Identify specific nodes in a JSON document (RFC 6901)"
 optional = false
 python-versions = ">=3.7"
+groups = ["main"]
 files = [
     {file = "jsonpointer-3.0.0-py2.py3-none-any.whl", hash = "sha256:13e088adc14fca8b6aa8177c044e12701e6ad4b28ff10e65f2267a90109c9942"},
     {file = "jsonpointer-3.0.0.tar.gz", hash = "sha256:2b2d729f2091522d61c3b31f82e11870f60b68f43fbc705cb76bf4b832af59ef"},
@@ -231,6 +244,7 @@ version = "0.2.38"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.8.1"
+groups = ["main"]
 files = [
     {file = "langchain_core-0.2.38-py3-none-any.whl", hash = "sha256:8a5729bc7e68b4af089af20eff44fe4e7ca21d0e0c87ec21cef7621981fd1a4a"},
     {file = "langchain_core-0.2.38.tar.gz", hash = "sha256:eb69dbedd344f2ee1f15bcea6c71a05884b867588fadc42d04632e727c1238f3"},
@@ -254,6 +268,7 @@ version = "0.1.93"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 optional = false
 python-versions = "<4.0,>=3.8.1"
+groups = ["main"]
 files = [
     {file = "langsmith-0.1.93-py3-none-any.whl", hash = "sha256:811210b9d5f108f36431bd7b997eb9476a9ecf5a2abd7ddbb606c1cdcf0f43ce"},
     {file = "langsmith-0.1.93.tar.gz", hash = "sha256:285b6ad3a54f50fa8eb97b5f600acc57d0e37e139dd8cf2111a117d0435ba9b4"},
@@ -273,6 +288,7 @@ version = "3.21.3"
 description = "A lightweight library for converting complex datatypes to and from native Python datatypes."
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
     {file = "marshmallow-3.21.3-py3-none-any.whl", hash = "sha256:86ce7fb914aa865001a4b2092c4c2872d13bc347f3d42673272cabfdbad386f1"},
     {file = "marshmallow-3.21.3.tar.gz", hash = "sha256:4f57c5e050a54d66361e826f94fba213eb10b67b2fdb02c3e0343ce207ba1662"},
@@ -286,85 +302,13 @@ dev = ["marshmallow[tests]", "pre-commit (>=3.5,<4.0)", "tox"]
 docs = ["alabaster (==0.7.16)", "autodocsumm (==0.2.12)", "sphinx (==7.3.7)", "sphinx-issues (==4.1.0)", "sphinx-version-warning (==1.1.2)"]
 tests = ["pytest", "pytz", "simplejson"]
 
-[[package]]
-name = "msgpack"
-version = "1.1.0"
-description = "MessagePack serializer"
-optional = false
-python-versions = ">=3.8"
-files = [
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:7ad442d527a7e358a469faf43fda45aaf4ac3249c8310a82f0ccff9164e5dccd"},
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:74bed8f63f8f14d75eec75cf3d04ad581da6b914001b474a5d3cd3372c8cc27d"},
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:914571a2a5b4e7606997e169f64ce53a8b1e06f2cf2c3a7273aa106236d43dd5"},
-    {file = "msgpack-1.1.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c921af52214dcbb75e6bdf6a661b23c3e6417f00c603dd2070bccb5c3ef499f5"},
-    {file = "msgpack-1.1.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d8ce0b22b890be5d252de90d0e0d119f363012027cf256185fc3d474c44b1b9e"},
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 [[package]]
 name = "mypy"
 version = "1.11.0"
 description = "Optional static typing for Python"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
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@@ -412,6 +356,7 @@ 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 = [
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 description = "Fast, correct Python JSON library supporting dataclasses, datetimes, and numpy"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
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 ]
 
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+optional = false
+python-versions = ">=3.9"
+groups = ["main"]
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+]
+
 [[package]]
 name = "packaging"
 version = "24.1"
 description = "Core utilities for Python packages"
 optional = false
 python-versions = ">=3.8"
+groups = ["main", "dev"]
 files = [
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@@ -496,6 +479,7 @@ version = "1.5.0"
 description = "plugin and hook calling mechanisms for python"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 files = [
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@@ -511,6 +495,7 @@ version = "2.8.2"
 description = "Data validation using Python type hints"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
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@@ -533,6 +518,7 @@ version = "2.20.1"
 description = "Core functionality for Pydantic validation and serialization"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
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@@ -634,6 +620,7 @@ version = "7.4.4"
 description = "pytest: simple powerful testing with Python"
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
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@@ -656,6 +643,7 @@ version = "0.21.2"
 description = "Pytest support for asyncio"
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
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@@ -674,6 +662,7 @@ 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 = [
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@@ -691,6 +680,7 @@ version = "0.4.2"
 description = "Automatically rerun your tests on file modifications"
 optional = false
 python-versions = "<4.0.0,>=3.7.0"
+groups = ["dev"]
 files = [
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@@ -706,6 +696,7 @@ version = "6.0.1"
 description = "YAML parser and emitter for Python"
 optional = false
 python-versions = ">=3.6"
+groups = ["main"]
 files = [
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@@ -766,6 +757,7 @@ version = "2.32.3"
 description = "Python HTTP for Humans."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
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@@ -787,6 +779,7 @@ version = "0.6.2"
 description = "An extremely fast Python linter and code formatter, written in Rust."
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
 files = [
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@@ -814,6 +807,7 @@ version = "8.5.0"
 description = "Retry code until it succeeds"
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
     {file = "tenacity-8.5.0-py3-none-any.whl", hash = "sha256:b594c2a5945830c267ce6b79a166228323ed52718f30302c1359836112346687"},
     {file = "tenacity-8.5.0.tar.gz", hash = "sha256:8bc6c0c8a09b31e6cad13c47afbed1a567518250a9a171418582ed8d9c20ca78"},
@@ -829,6 +823,8 @@ version = "2.0.1"
 description = "A lil' TOML parser"
 optional = false
 python-versions = ">=3.7"
+groups = ["dev"]
+markers = "python_version < \"3.11\""
 files = [
     {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
     {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
@@ -840,6 +836,7 @@ 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"},
@@ -851,6 +848,7 @@ version = "0.9.0"
 description = "Runtime inspection utilities for typing module."
 optional = false
 python-versions = "*"
+groups = ["dev"]
 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"},
@@ -866,6 +864,7 @@ version = "2.2.2"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 optional = false
 python-versions = ">=3.8"
+groups = ["main"]
 files = [
     {file = "urllib3-2.2.2-py3-none-any.whl", hash = "sha256:a448b2f64d686155468037e1ace9f2d2199776e17f0a46610480d311f73e3472"},
     {file = "urllib3-2.2.2.tar.gz", hash = "sha256:dd505485549a7a552833da5e6063639d0d177c04f23bc3864e41e5dc5f612168"},
@@ -883,6 +882,7 @@ version = "4.0.1"
 description = "Filesystem events monitoring"
 optional = false
 python-versions = ">=3.8"
+groups = ["dev"]
 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"},
@@ -922,6 +922,6 @@ files = [
 watchmedo = ["PyYAML (>=3.10)"]
 
 [metadata]
-lock-version = "2.0"
+lock-version = "2.1"
 python-versions = "^3.9.0,<4.0"
-content-hash = "8861f12053a7b4594cd8a218f31b78f861d7e5391017bc9209cc5bccbd6f769c"
+content-hash = "db4bfc26829b1abd13c9426d74dc26100f36a6777e965a32eed4cc1ae17a8c14"

libs/checkpoint/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-checkpoint"
-version = "2.0.21"
+version = "2.0.23"
 description = "Library with base interfaces for LangGraph checkpoint savers."
 authors = []
 license = "MIT"
@@ -11,7 +11,7 @@ packages = [{ include = "langgraph" }]
 [tool.poetry.dependencies]
 python = "^3.9.0,<4.0"
 langchain-core = ">=0.2.38,<0.4"
-msgpack = "^1.1.0"
+ormsgpack = "^1.8.0"
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.6.2"

libs/checkpoint/tests/test_jsonplus.py

@@ -15,7 +15,10 @@ from pydantic.v1 import BaseModel as BaseModelV1
 from pydantic.v1 import SecretStr as SecretStrV1
 from zoneinfo import ZoneInfo
 
-from langgraph.checkpoint.serde.jsonplus import JsonPlusSerializer
+from langgraph.checkpoint.serde.jsonplus import (
+    JsonPlusSerializer,
+    _msgpack_ext_hook_to_json,
+)
 from langgraph.store.base import Item
 
 
@@ -104,6 +107,7 @@ def test_serde_jsonplus() -> None:
         "time": current_time,
         "uid": uid,
         "timestamp": current_timestamp,
+        "my_rich_dict": {(1, 2, 3): 45},
         "my_slotted_class": MyDataclassWSlots("bar", 2, InnerDataclass("hello")),
         "my_dataclass": MyDataclass("foo", 1, InnerDataclass("hello")),
         "my_enum": MyEnum.FOO,
@@ -164,6 +168,113 @@ def test_serde_jsonplus() -> None:
     ]
 
 
+def test_serde_jsonplus_json_mode() -> None:
+    uid = uuid.UUID(int=1)
+    deque_instance = deque([1, 2, 3])
+    tzn = ZoneInfo("America/New_York")
+    ip4 = IPv4Address("192.168.0.1")
+    current_date = date(2024, 4, 19)
+    current_time = time(23, 4, 57, 51022, timezone.max)
+    current_timestamp = datetime(2024, 4, 19, 23, 4, 57, 51022, timezone.max)
+
+    to_serialize = {
+        "path": pathlib.Path("foo", "bar"),
+        "re": re.compile(r"foo", re.DOTALL),
+        "decimal": Decimal("1.10101"),
+        "set": {1, 2, frozenset({1, 2})},
+        "frozen_set": frozenset({1, 2, 3}),
+        "ip4": ip4,
+        "deque": deque_instance,
+        "tzn": tzn,
+        "date": current_date,
+        "time": current_time,
+        "uid": uid,
+        "timestamp": current_timestamp,
+        "my_slotted_class": MyDataclassWSlots("bar", 2, InnerDataclass("hello")),
+        "my_dataclass": MyDataclass("foo", 1, InnerDataclass("hello")),
+        "my_enum": MyEnum.FOO,
+        "my_pydantic": MyPydantic(foo="foo", bar=1, inner=InnerPydantic(hello="hello")),
+        "my_pydantic_v1": MyPydanticV1(
+            foo="foo", bar=1, inner=InnerPydanticV1(hello="hello")
+        ),
+        "my_secret_str": SecretStr("meow"),
+        "my_secret_str_v1": SecretStrV1("meow"),
+        "person": Person(name="foo"),
+        "a_bool": True,
+        "a_none": None,
+        "a_str": "foo",
+        "a_str_nuc": "foo\u0000",
+        "a_str_uc": "foo ⛰️",
+        "a_str_ucuc": "foo \u26f0\ufe0f\u0000",
+        "a_str_ucucuc": "foo \\u26f0\\ufe0f",
+        "an_int": 1,
+        "a_float": 1.1,
+        "a_bytes": b"my bytes",
+        "a_bytearray": bytearray([42]),
+        "my_item": Item(
+            value={},
+            key="my-key",
+            namespace=("a", "name", " "),
+            created_at=datetime(2024, 9, 24, 17, 29, 10, 128397),
+            updated_at=datetime(2024, 9, 24, 17, 29, 11, 128397),
+        ),
+    }
+
+    serde = JsonPlusSerializer(__unpack_ext_hook__=_msgpack_ext_hook_to_json)
+
+    dumped = serde.dumps_typed(to_serialize)
+
+    assert dumped[0] == "msgpack"
+    result = serde.loads_typed(dumped)
+    assert result == {
+        "path": ["foo", "bar"],
+        "re": ["foo", 48],
+        "decimal": "1.10101",
+        "set": [1, 2, [1, 2]],
+        "frozen_set": [1, 2, 3],
+        "ip4": "192.168.0.1",
+        "deque": [1, 2, 3],
+        "tzn": "America/New_York",
+        "date": [2024, 4, 19],
+        "time": {
+            "hour": 23,
+            "minute": 4,
+            "second": 57,
+            "microsecond": 51022,
+            "tzinfo": [[0, 86340, 0]],
+            "fold": 0,
+        },
+        "uid": "00000000-0000-0000-0000-000000000001",
+        "timestamp": "2024-04-19T23:04:57.051022+23:59",
+        "my_slotted_class": {"foo": "bar", "bar": 2, "inner": {"hello": "hello"}},
+        "my_dataclass": {"foo": "foo", "bar": 1, "inner": {"hello": "hello"}},
+        "my_enum": "foo",
+        "my_pydantic": {"foo": "foo", "bar": 1, "inner": {"hello": "hello"}},
+        "my_pydantic_v1": {"foo": "foo", "bar": 1, "inner": {"hello": "hello"}},
+        "my_secret_str": "meow",
+        "my_secret_str_v1": "meow",
+        "person": {"name": "foo"},
+        "a_bool": True,
+        "a_none": None,
+        "a_str": "foo",
+        "a_str_nuc": "foo\x00",
+        "a_str_uc": "foo ⛰️",
+        "a_str_ucuc": "foo ⛰️\x00",
+        "a_str_ucucuc": "foo \\u26f0\\ufe0f",
+        "an_int": 1,
+        "a_float": 1.1,
+        "a_bytes": b"my bytes",
+        "a_bytearray": b"*",
+        "my_item": {
+            "namespace": ["a", "name", " "],
+            "key": "my-key",
+            "value": {},
+            "created_at": "2024-09-24T17:29:10.128397",
+            "updated_at": "2024-09-24T17:29:11.128397",
+        },
+    }
+
+
 def test_serde_jsonplus_bytes() -> None:
     serde = JsonPlusSerializer()
 

libs/cli/langgraph_cli/config.py

@@ -405,6 +405,7 @@ def validate_config(config: Config) -> Config:
             "auth": config.get("auth"),
             "http": config.get("http"),
             "ui": config.get("ui"),
+            "ui_config": config.get("ui_config"),
         }
         if config.get("node_version")
         else {
@@ -418,6 +419,7 @@ def validate_config(config: Config) -> Config:
             "auth": config.get("auth"),
             "http": config.get("http"),
             "ui": config.get("ui"),
+            "ui_config": config.get("ui_config"),
         }
     )
 
@@ -1022,6 +1024,28 @@ def node_config_to_docker(
         except OSError:
             return False
 
+    # inspired by `package-manager-detector`
+    def get_pkg_manager_name():
+        try:
+            with open(config_path.parent / "package.json") as f:
+                pkg = json.load(f)
+
+                if (pkg_manager_name := pkg.get("packageManager")) and isinstance(
+                    pkg_manager_name, str
+                ):
+                    return pkg_manager_name.lstrip("^").split("@")[0]
+
+                if (
+                    dev_engine_name := (
+                        (pkg.get("devEngines") or {}).get("packageManager") or {}
+                    ).get("name")
+                ) and isinstance(dev_engine_name, str):
+                    return dev_engine_name
+
+                return None
+        except Exception:
+            return None
+
     npm, yarn, pnpm, bun = [
         test_file("package-lock.json"),
         test_file("yarn.lock"),
@@ -1038,7 +1062,16 @@ def node_config_to_docker(
     elif bun:
         install_cmd = "bun i"
     else:
-        install_cmd = "npm i"
+        pkg_manager_name = get_pkg_manager_name()
+
+        if pkg_manager_name == "yarn":
+            install_cmd = "yarn install"
+        elif pkg_manager_name == "pnpm":
+            install_cmd = "pnpm i"
+        elif pkg_manager_name == "bun":
+            install_cmd = "bun i"
+        else:
+            install_cmd = "npm i"
     store_config = config.get("store")
     env_additional_config = (
         ""
@@ -1067,6 +1100,7 @@ RUN cd {faux_path} && {install_cmd}
 {env_additional_config}
 ENV LANGSERVE_GRAPHS='{json.dumps(config["graphs"])}'
 {f"ENV LANGGRAPH_UI='{json.dumps(config['ui'])}'" if config.get("ui") else ""}
+{f"ENV LANGGRAPH_UI_CONFIG='{json.dumps(config['ui_config'])}'" if config.get("ui_config") else ""}
 
 WORKDIR {faux_path}
 

libs/cli/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-cli"
-version = "0.1.79"
+version = "0.1.81"
 description = "CLI for interacting with LangGraph API"
 authors = []
 license = "MIT"

libs/cli/tests/unit_tests/test_config.py

@@ -34,6 +34,7 @@ def test_validate_config():
         "auth": None,
         "http": None,
         "ui": None,
+        "ui_config": None,
         **expected_config,
     }
     actual_config = validate_config(expected_config)
@@ -54,6 +55,7 @@ def test_validate_config():
         "auth": None,
         "http": None,
         "ui": None,
+        "ui_config": None,
     }
     actual_config = validate_config(expected_config)
     assert actual_config == expected_config
@@ -470,6 +472,7 @@ def test_config_to_docker_nodejs():
                 "graphs": graphs,
                 "dockerfile_lines": ["ARG meow", "ARG foo"],
                 "ui": {"agent": "./graphs/agent.ui.jsx"},
+                "ui_config": {"shared": ["nuqs"]},
             }
         ),
         "langchain/langgraphjs-api",
@@ -481,6 +484,7 @@ ADD . /deps/unit_tests
 RUN cd /deps/unit_tests && npm i
 ENV LANGSERVE_GRAPHS='{"agent": "./graphs/agent.js:graph"}'
 ENV LANGGRAPH_UI='{"agent": "./graphs/agent.ui.jsx"}'
+ENV LANGGRAPH_UI_CONFIG='{"shared": ["nuqs"]}'
 WORKDIR /deps/unit_tests
 RUN (test ! -f /api/langgraph_api/js/build.mts && echo "Prebuild script not found, skipping") || tsx /api/langgraph_api/js/build.mts"""
 

libs/langgraph/bench/__main__.py

@@ -252,27 +252,15 @@ benchmarks = (
         },
     ),
     (
-        "sequential_20",
-        create_sequential(20).compile(),
-        create_sequential(20).compile(),
+        "sequential_10",
+        create_sequential(10).compile(),
+        create_sequential(10).compile(),
         {"messages": []},  # Empty list of messages
     ),
     (
-        "sequential_50",
-        create_sequential(50).compile(),
-        create_sequential(50).compile(),
-        {"messages": []},  # Empty list of messages
-    ),
-    (
-        "sequential_100",
-        create_sequential(100).compile(),
-        create_sequential(100).compile(),
-        {"messages": []},  # Empty list of messages
-    ),
-    (
-        "sequential_200",
-        create_sequential(200).compile(),
-        create_sequential(200).compile(),
+        "sequential_1000",
+        create_sequential(1000).compile(),
+        create_sequential(1000).compile(),
         {"messages": []},  # Empty list of messages
     ),
     (
@@ -383,8 +371,17 @@ for name, agraph, graph, input in benchmarks:
         r.bench_func(name + "_sync", run, graph, input)
 
 
+# Pick a handful of graphs to measure the first event latency.
+# At the moment, limiting just due to the size of the annotation on github.
+GRAPHS_FOR_1st_EVENT_LATENCY = (
+    "sequential_1000",
+    "pydantic_state_25x300",
+)
+
 # First event latency
 for name, agraph, graph, input in benchmarks:
+    if graph not in GRAPHS_FOR_1st_EVENT_LATENCY:
+        continue
     r.bench_async_func(
         name + "_first_event_latency",
         arun_first_event_latency,
@@ -403,30 +400,14 @@ compilation_benchmarks = (
         "sequential_1000",
         create_sequential(1_000),
     ),
-    (
-        "sequential_10000",
-        create_sequential(10_000),
-    ),
     (
         "pydantic_state_25x300",
         pydantic_state(300),
     ),
-    (
-        "pydantic_state_15x600",
-        pydantic_state(600),
-    ),
-    (
-        "pydantic_state_9x1200",
-        pydantic_state(1200),
-    ),
     (
         "wide_state_15x600",
         wide_state(600),
     ),
-    (
-        "wide_state_9x1200",
-        wide_state(1200),
-    ),
 )
 
 for name, graph in compilation_benchmarks:

libs/langgraph/bench/wide_state.py

@@ -124,9 +124,9 @@ if __name__ == "__main__":
             {
                 str(i) * 10: {
                     str(j) * 10: ["hi?" * 10, True, 1, 6327816386138, None] * 5
-                    for j in range(5)
+                    for j in range(50)
                 }
-                for i in range(5)
+                for i in range(50)
             }
         ]
     }

libs/langgraph/langgraph/channels/topic.py

@@ -62,7 +62,7 @@ class Topic(
                 empty.values = checkpoint
         return empty
 
-    def update(self, values: Sequence[Union[Value, list[Value]]]) -> None:
+    def update(self, values: Sequence[Union[Value, list[Value]]]) -> bool:
         current = list(self.values)
         if not self.accumulate:
             self.values = list[Value]()

libs/langgraph/langgraph/graph/graph.py

@@ -499,6 +499,11 @@ class CompiledGraph(Pregel):
         ) -> None:
             if end == END and END not in end_nodes:
                 end_nodes[END] = graph.add_node(self.get_output_schema(config), END)
+            if start not in start_nodes or end not in end_nodes:
+                logger.warning(
+                    f"Could not add edge from '{start}' to '{end}' due to missing nodes"
+                )
+                return
             return graph.add_edge(
                 start_nodes[start],
                 end_nodes[end],
@@ -522,9 +527,10 @@ class CompiledGraph(Pregel):
                 if len(subgraph.nodes) >= 1:
                     e, s = graph.extend(subgraph, prefix=key)
                     if e is None:
-                        raise ValueError(
+                        logger.warning(
                             f"Could not extend subgraph '{key}' due to missing entrypoint"
                         )
+                        continue
                     if s is not None:
                         start_nodes[key] = s
                     end_nodes[key] = e

libs/langgraph/langgraph/graph/state.py

@@ -242,7 +242,7 @@ class StateGraph(Graph):
         metadata: Optional[dict[str, Any]] = None,
         input: Optional[Type[Any]] = None,
         retry: Optional[RetryPolicy] = None,
-        destinations: Optional[Union[dict[str, str], tuple[str]]] = None,
+        destinations: Optional[Union[dict[str, str], tuple[str, ...]]] = None,
     ) -> Self:
         """Adds a new node to the state graph.
         Will take the name of the function/runnable as the node name.
@@ -267,7 +267,7 @@ class StateGraph(Graph):
         metadata: Optional[dict[str, Any]] = None,
         input: Optional[Type[Any]] = None,
         retry: Optional[RetryPolicy] = None,
-        destinations: Optional[Union[dict[str, str], tuple[str]]] = None,
+        destinations: Optional[Union[dict[str, str], tuple[str, ...]]] = None,
     ) -> Self:
         """Adds a new node to the state graph.
 
@@ -291,7 +291,7 @@ class StateGraph(Graph):
         metadata: Optional[dict[str, Any]] = None,
         input: Optional[Type[Any]] = None,
         retry: Optional[RetryPolicy] = None,
-        destinations: Optional[Union[dict[str, str], tuple[str]]] = None,
+        destinations: Optional[Union[dict[str, str], tuple[str, ...]]] = None,
     ) -> Self:
         """Adds a new node to the state graph.
 
@@ -303,7 +303,7 @@ class StateGraph(Graph):
             metadata (Optional[dict[str, Any]]): The metadata associated with the node. (default: None)
             input (Optional[Type[Any]]): The input schema for the node. (default: the graph's input schema)
             retry (Optional[RetryPolicy]): The policy for retrying the node. (default: None)
-            destinations (Optional[Union[dict[str, str], tuple[str]]]): Destinations that indicate where a node can route to.
+            destinations (Optional[Union[dict[str, str], tuple[str, ...]]]): Destinations that indicate where a node can route to.
                 This is useful for edgeless graphs with nodes that return `Command` objects.
                 If a dict is provided, the keys will be used as the target node names and the values will be used as the labels for the edges.
                 If a tuple is provided, the values will be used as the target node names.
@@ -799,11 +799,11 @@ class CompiledStateGraph(CompiledGraph):
                 raise InvalidUpdateError(msg)
 
         # state updaters
-        write_entries: list[Union[ChannelWriteEntry, ChannelWriteTupleEntry]] = [
+        write_entries: tuple[Union[ChannelWriteEntry, ChannelWriteTupleEntry], ...] = (
             ChannelWriteTupleEntry(
                 mapper=_get_root if output_keys == ["__root__"] else _get_updates
-            )
-        ]
+            ),
+        )
 
         # add node and output channel
         if key == START:
@@ -811,20 +811,14 @@ class CompiledStateGraph(CompiledGraph):
                 tags=[TAG_HIDDEN],
                 triggers=[START],
                 channels=[START],
-                writers=[
-                    ChannelWrite(
-                        write_entries,
-                        tags=[TAG_HIDDEN],
-                    ),
-                ],
+                writers=[ChannelWrite(write_entries, tags=[TAG_HIDDEN])],
             )
         elif node is not None:
             input_schema = node.input if node else self.builder.schema
             input_values = {k: k for k in self.builder.schemas[input_schema]}
             is_single_input = len(input_values) == 1 and "__root__" in input_values
 
-            branch_channel = f"branch:to:{key}"
-            self.channels[key] = EphemeralValue(Any, guard=False)
+            branch_channel = CHANNEL_BRANCH_TO.format(key)
             self.channels[branch_channel] = EphemeralValue(Any, guard=False)
             self.nodes[key] = PregelNode(
                 triggers=[branch_channel],
@@ -836,13 +830,8 @@ class CompiledStateGraph(CompiledGraph):
                     input_schema,
                     self.builder.type_hints[input_schema],
                 ),
-                writers=[
-                    # publish to this channel and state keys
-                    ChannelWrite(
-                        write_entries + [ChannelWriteEntry(key, key)],
-                        tags=[TAG_HIDDEN],
-                    ),
-                ],
+                # publish to state keys
+                writers=[ChannelWrite(write_entries, tags=[TAG_HIDDEN])],
                 metadata=node.metadata,
                 retry_policy=node.retry_policy,
                 bound=node.runnable,
@@ -852,21 +841,13 @@ class CompiledStateGraph(CompiledGraph):
 
     def attach_edge(self, starts: Union[str, Sequence[str]], end: str) -> None:
         if isinstance(starts, str):
-            if starts == START:
-                channel_name = f"start:{end}"
-                # register channel
-                self.channels[channel_name] = EphemeralValue(Any)
-                # subscribe to channel
-                self.nodes[end].triggers.append(channel_name)
-                # publish to channel
-                self.nodes[START].writers.append(
+            # subscribe to start channel
+            if end != END:
+                self.nodes[starts].writers.append(
                     ChannelWrite(
-                        [ChannelWriteEntry(channel_name, START)], tags=[TAG_HIDDEN]
+                        (ChannelWriteEntry(CHANNEL_BRANCH_TO.format(end), starts),)
                     )
                 )
-            elif end != END:
-                # subscribe to start channel
-                self.nodes[end].triggers.append(starts)
         elif end != END:
             channel_name = f"join:{'+'.join(starts)}:{end}"
             # register channel
@@ -877,7 +858,7 @@ class CompiledStateGraph(CompiledGraph):
             for start in starts:
                 self.nodes[start].writers.append(
                     ChannelWrite(
-                        [ChannelWriteEntry(channel_name, start)], tags=[TAG_HIDDEN]
+                        (ChannelWriteEntry(channel_name, start),), tags=[TAG_HIDDEN]
                     )
                 )
 
@@ -890,7 +871,7 @@ class CompiledStateGraph(CompiledGraph):
             if filtered := [p for p in packets if p != END]:
                 writes = [
                     (
-                        ChannelWriteEntry(f"branch:to:{p}", start)
+                        ChannelWriteEntry(CHANNEL_BRANCH_TO.format(p), start)
                         if not isinstance(p, Send)
                         else p
                     )
@@ -1166,3 +1147,6 @@ def _get_schema(
                     if k in channels and isinstance(channels[k], BaseChannel)
                 },
             )
+
+
+CHANNEL_BRANCH_TO = "branch:to:{}"

libs/langgraph/langgraph/pregel/algo.py

@@ -23,7 +23,7 @@ from typing import (
 from langchain_core.callbacks import Callbacks
 from langchain_core.callbacks.manager import AsyncParentRunManager, ParentRunManager
 from langchain_core.runnables.config import RunnableConfig
-from xxhash import xxh3_64_hexdigest
+from xxhash import xxh3_128_hexdigest
 
 from langgraph.channels.base import BaseChannel
 from langgraph.checkpoint.base import (
@@ -960,7 +960,7 @@ def _uuid5_str(namespace: bytes, *parts: str) -> str:
 
 def _xxhash_str(namespace: bytes, *parts: str) -> str:
     """Generate a UUID from the XXH3 hash of a namespace and str parts."""
-    hex = xxh3_64_hexdigest(namespace + b"".join(p.encode() for p in parts))
+    hex = xxh3_128_hexdigest(namespace + b"".join(p.encode() for p in parts))
     return f"{hex[:8]}-{hex[8:12]}-{hex[12:16]}-{hex[16:20]}-{hex[20:32]}"
 
 

libs/langgraph/langgraph/pregel/executor.py

@@ -156,10 +156,16 @@ class AsyncBackgroundExecutor(AsyncContextManager):
         if self.semaphore:
             coro = gated(self.semaphore, coro)
         if CONTEXT_NOT_SUPPORTED:
-            task = run_coroutine_threadsafe(coro, self.loop, name=__name__)
+            task = run_coroutine_threadsafe(
+                coro, self.loop, name=__name__, lazy=__next_tick__
+            )
         else:
             task = run_coroutine_threadsafe(
-                coro, self.loop, name=__name__, context=copy_context()
+                coro,
+                self.loop,
+                name=__name__,
+                context=copy_context(),
+                lazy=__next_tick__,
             )
         self.tasks[task] = (__cancel_on_exit__, __reraise_on_exit__)
         task.add_done_callback(self.done)

libs/langgraph/langgraph/pregel/remote.py

@@ -654,7 +654,9 @@ class RemoteGraph(PregelProtocol):
             # raise interrupt or errors
             if chunk.event.startswith("updates"):
                 if isinstance(chunk.data, dict) and INTERRUPT in chunk.data:
-                    raise GraphInterrupt(chunk.data[INTERRUPT])
+                    raise GraphInterrupt(
+                        [Interrupt(**i) for i in chunk.data[INTERRUPT]]
+                    )
             elif chunk.event.startswith("error"):
                 raise RemoteException(chunk.data)
             # filter for what was actually requested
@@ -746,7 +748,9 @@ class RemoteGraph(PregelProtocol):
             # raise interrupt or errors
             if chunk.event.startswith("updates"):
                 if isinstance(chunk.data, dict) and INTERRUPT in chunk.data:
-                    raise GraphInterrupt(chunk.data[INTERRUPT])
+                    raise GraphInterrupt(
+                        [Interrupt(**i) for i in chunk.data[INTERRUPT]]
+                    )
             elif chunk.event.startswith("error"):
                 raise RemoteException(chunk.data)
             # filter for what was actually requested

libs/langgraph/langgraph/pregel/runner.py

@@ -44,6 +44,18 @@ from langgraph.utils.future import chain_future
 F = TypeVar("F", concurrent.futures.Future, asyncio.Future)
 E = TypeVar("E", threading.Event, asyncio.Event)
 
+# List of filenames to exclude from exception traceback
+# Note: Frames will be removed if they are the last frame in traceback, recursively
+EXCLUDED_FRAME_FNAMES = (
+    "langgraph/pregel/retry.py",
+    "langgraph/pregel/runner.py",
+    "langgraph/pregel/executor.py",
+    "langgraph/utils/runnable.py",
+    "langchain_core/runnables/config.py",
+    "concurrent/futures/thread.py",
+    "concurrent/futures/_base.py",
+)
+
 
 class FuturesDict(Generic[F, E], dict[F, Optional[PregelExecutableTask]]):
     event: E
@@ -167,6 +179,13 @@ class PregelRunner:
                     fut.set_exception(exc)
                     futures.done.add(fut)
                 elif reraise:
+                    if tb := exc.__traceback__:
+                        while tb.tb_next is not None and any(
+                            tb.tb_frame.f_code.co_filename.endswith(name)
+                            for name in EXCLUDED_FRAME_FNAMES
+                        ):
+                            tb = tb.tb_next
+                        exc.__traceback__ = tb
                     raise
             if not futures:  # maybe `t` schuduled another task
                 return
@@ -229,10 +248,20 @@ class PregelRunner:
         # give control back to the caller
         yield
         # panic on failure or timeout
-        _panic_or_proceed(
-            futures.done.union(f for f, t in futures.items() if t is not None),
-            panic=reraise,
-        )
+        try:
+            _panic_or_proceed(
+                futures.done.union(f for f, t in futures.items() if t is not None),
+                panic=reraise,
+            )
+        except Exception as exc:
+            if tb := exc.__traceback__:
+                while tb.tb_next is not None and any(
+                    tb.tb_frame.f_code.co_filename.endswith(name)
+                    for name in EXCLUDED_FRAME_FNAMES
+                ):
+                    tb = tb.tb_next
+                exc.__traceback__ = tb
+            raise
 
     async def atick(
         self,
@@ -283,6 +312,13 @@ class PregelRunner:
                     fut.set_exception(exc)
                     futures.done.add(fut)
                 elif reraise:
+                    if tb := exc.__traceback__:
+                        while tb.tb_next is not None and any(
+                            tb.tb_frame.f_code.co_filename.endswith(name)
+                            for name in EXCLUDED_FRAME_FNAMES
+                        ):
+                            tb = tb.tb_next
+                        exc.__traceback__ = tb
                     raise
             if not futures:  # maybe `t` schuduled another task
                 return
@@ -357,11 +393,21 @@ class PregelRunner:
         for fut in futures:
             fut.cancel()
         # panic on failure or timeout
-        _panic_or_proceed(
-            futures.done.union(f for f, t in futures.items() if t is not None),
-            timeout_exc_cls=asyncio.TimeoutError,
-            panic=reraise,
-        )
+        try:
+            _panic_or_proceed(
+                futures.done.union(f for f, t in futures.items() if t is not None),
+                timeout_exc_cls=asyncio.TimeoutError,
+                panic=reraise,
+            )
+        except Exception as exc:
+            if tb := exc.__traceback__:
+                while tb.tb_next is not None and any(
+                    tb.tb_frame.f_code.co_filename.endswith(name)
+                    for name in EXCLUDED_FRAME_FNAMES
+                ):
+                    tb = tb.tb_next
+                exc.__traceback__ = tb
+            raise
 
     def commit(
         self,

libs/langgraph/langgraph/types.py

@@ -101,7 +101,10 @@ def default_retry_on(exc: Exception) -> bool:
 
 
 class RetryPolicy(NamedTuple):
-    """Configuration for retrying nodes."""
+    """Configuration for retrying nodes.
+
+    !!! version-added "Added in version 0.2.24."
+    """
 
     initial_interval: float = 0.5
     """Amount of time that must elapse before the first retry occurs. In seconds."""
@@ -120,13 +123,20 @@ class RetryPolicy(NamedTuple):
 
 
 class CachePolicy(NamedTuple):
-    """Configuration for caching nodes."""
+    """Configuration for caching nodes.
+
+    !!! version-added "Added in version 0.2.24."
+    """
 
     pass
 
 
 @dataclasses.dataclass(**_DC_KWARGS)
 class Interrupt:
+    """
+    !!! version-added "Added in version 0.2.24."
+    """
+
     value: Any
     resumable: bool = False
     ns: Optional[Sequence[str]] = None
@@ -268,6 +278,8 @@ N = TypeVar("N", bound=Hashable)
 class Command(Generic[N], ToolOutputMixin):
     """One or more commands to update the graph's state and send messages to nodes.
 
+    !!! version-added "Added in version 0.2.24."
+
     Args:
         graph: graph to send the command to. Supported values are:
 

libs/langgraph/langgraph/utils/future.py

@@ -10,6 +10,7 @@ T = TypeVar("T")
 AnyFuture = Union[asyncio.Future, concurrent.futures.Future]
 
 CONTEXT_NOT_SUPPORTED = sys.version_info < (3, 11)
+EAGER_NOT_SUPPORTED = sys.version_info < (3, 12)
 
 
 def _get_loop(fut: asyncio.Future) -> asyncio.AbstractEventLoop:
@@ -142,6 +143,7 @@ def _ensure_future(
     loop: asyncio.AbstractEventLoop,
     name: Optional[str] = None,
     context: Optional[contextvars.Context] = None,
+    lazy: bool = True,
 ) -> asyncio.Task[T]:
     called_wrap_awaitable = False
     if not asyncio.iscoroutine(coro_or_future):
@@ -159,8 +161,12 @@ def _ensure_future(
     try:
         if CONTEXT_NOT_SUPPORTED:
             return loop.create_task(coro_or_future, name=name)
-        else:
+        elif EAGER_NOT_SUPPORTED or lazy:
             return loop.create_task(coro_or_future, name=name, context=context)
+        else:
+            return asyncio.eager_task_factory(
+                loop, coro_or_future, name=name, context=context
+            )
     except RuntimeError:
         if not called_wrap_awaitable:
             coro_or_future.close()
@@ -180,6 +186,8 @@ def _wrap_awaitable(awaitable: Awaitable[T]) -> Generator[None, None, T]:
 def run_coroutine_threadsafe(
     coro: Coroutine[None, None, T],
     loop: asyncio.AbstractEventLoop,
+    *,
+    lazy: bool,
     name: Optional[str] = None,
     context: Optional[contextvars.Context] = None,
 ) -> asyncio.Future[T]:
@@ -187,18 +195,23 @@ def run_coroutine_threadsafe(
 
     Return a asyncio.Future to access the result.
     """
-    future: asyncio.Future[T] = asyncio.Future(loop=loop)
 
-    def callback() -> None:
-        try:
-            chain_future(
-                _ensure_future(coro, loop=loop, name=name, context=context), future
-            )
-        except (SystemExit, KeyboardInterrupt):
-            raise
-        except BaseException as exc:
-            future.set_exception(exc)
-            raise
+    if asyncio._get_running_loop() is loop:
+        return _ensure_future(coro, loop=loop, name=name, context=context, lazy=lazy)
+    else:
+        future: asyncio.Future[T] = asyncio.Future(loop=loop)
 
-    loop.call_soon_threadsafe(callback, context=context)
-    return future
+        def callback() -> None:
+            try:
+                chain_future(
+                    _ensure_future(coro, loop=loop, name=name, context=context),
+                    future,
+                )
+            except (SystemExit, KeyboardInterrupt):
+                raise
+            except BaseException as exc:
+                future.set_exception(exc)
+                raise
+
+        loop.call_soon_threadsafe(callback, context=context)
+        return future

libs/langgraph/poetry.lock

@@ -1358,7 +1358,7 @@ develop = true
 
 [package.dependencies]
 langchain-core = ">=0.2.38,<0.4"
-msgpack = "^1.1.0"
+ormsgpack = "^1.8.0"
 
 [package.source]
 type = "directory"
@@ -1558,80 +1558,6 @@ files = [
     {file = "mistune-3.0.2.tar.gz", hash = "sha256:fc7f93ded930c92394ef2cb6f04a8aabab4117a91449e72dcc8dfa646a508be8"},
 ]
 
-[[package]]
-name = "msgpack"
-version = "1.1.0"
-description = "MessagePack serializer"
-optional = false
-python-versions = ">=3.8"
-groups = ["main", "dev"]
-files = [
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-]
-
 [[package]]
 name = "mypy"
 version = "1.13.0"
@@ -1904,6 +1830,42 @@ files = [
     {file = "orjson-3.10.10.tar.gz", hash = "sha256:37949383c4df7b4337ce82ee35b6d7471e55195efa7dcb45ab8226ceadb0fe3b"},
 ]
 
+[[package]]
+name = "ormsgpack"
+version = "1.9.0"
+description = "Fast, correct Python msgpack library supporting dataclasses, datetimes, and numpy"
+optional = false
+python-versions = ">=3.9"
+groups = ["main", "dev"]
+files = [
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+    {file = "ormsgpack-1.9.0.tar.gz", hash = "sha256:015e8e6e74e5a1c2bcb9c25fdd8205cad0e8e2d1d32c6a259615aa189b61b8b4"},
+]
+
 [[package]]
 name = "overrides"
 version = "7.7.0"

libs/langgraph/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph"
-version = "0.3.19"
+version = "0.3.21"
 description = "Building stateful, multi-actor applications with LLMs"
 authors = []
 license = "MIT"

libs/langgraph/tests/test_large_cases.py

@@ -2483,7 +2483,7 @@ def test_prebuilt_tool_chat(snapshot: SnapshotAssertion) -> None:
             {
                 "langgraph_step": 1,
                 "langgraph_node": "agent",
-                "langgraph_triggers": ("branch:to:agent", "start:agent", "tools"),
+                "langgraph_triggers": ("branch:to:agent",),
                 "langgraph_path": (PULL, "agent"),
                 "langgraph_checkpoint_ns": AnyStr("agent:"),
                 "checkpoint_ns": AnyStr("agent:"),
@@ -2542,7 +2542,7 @@ def test_prebuilt_tool_chat(snapshot: SnapshotAssertion) -> None:
             {
                 "langgraph_step": 3,
                 "langgraph_node": "agent",
-                "langgraph_triggers": ("branch:to:agent", "start:agent", "tools"),
+                "langgraph_triggers": ("branch:to:agent",),
                 "langgraph_path": (PULL, "agent"),
                 "langgraph_checkpoint_ns": AnyStr("agent:"),
                 "checkpoint_ns": AnyStr("agent:"),
@@ -2585,7 +2585,7 @@ def test_prebuilt_tool_chat(snapshot: SnapshotAssertion) -> None:
             {
                 "langgraph_step": 5,
                 "langgraph_node": "agent",
-                "langgraph_triggers": ("branch:to:agent", "start:agent", "tools"),
+                "langgraph_triggers": ("branch:to:agent",),
                 "langgraph_path": (PULL, "agent"),
                 "langgraph_checkpoint_ns": AnyStr("agent:"),
                 "checkpoint_ns": AnyStr("agent:"),
@@ -4660,7 +4660,7 @@ def test_root_graph(
                     content="result for query",
                     name="search_api",
                     tool_call_id="tool_call123",
-                    id="00000000-0000-4000-8000-000000000037",
+                    id="00000000-0000-4000-8000-000000000040",
                 )
             ]
         },
@@ -4683,7 +4683,7 @@ def test_root_graph(
                     content="result for another",
                     name="search_api",
                     tool_call_id="tool_call456",
-                    id="00000000-0000-4000-8000-000000000045",
+                    id="00000000-0000-4000-8000-000000000049",
                 )
             ]
         },
@@ -5387,7 +5387,7 @@ def test_root_graph(
         "__root__": [
             HumanMessage(
                 content="what is weather in sf",
-                id="00000000-0000-4000-8000-000000000078",
+                id="00000000-0000-4000-8000-000000000083",
             ),
             AIMessage(
                 content="",
@@ -5407,7 +5407,7 @@ def test_root_graph(
             ),
             AIMessage(content="answer", id="ai2"),
             AIMessage(
-                content="an extra message", id="00000000-0000-4000-8000-000000000100"
+                content="an extra message", id="00000000-0000-4000-8000-000000000107"
             ),
             HumanMessage(content="what is weather in la"),
         ],
@@ -5501,10 +5501,7 @@ def test_in_one_fan_out_out_one_graph_state() -> None:
                     "id": AnyStr(),
                     "name": "rewrite_query",
                     "input": {"query": "what is weather in sf", "docs": []},
-                    "triggers": (
-                        "branch:to:rewrite_query",
-                        "start:rewrite_query",
-                    ),
+                    "triggers": ("branch:to:rewrite_query",),
                 },
             },
         ),
@@ -5535,10 +5532,7 @@ def test_in_one_fan_out_out_one_graph_state() -> None:
                     "id": AnyStr(),
                     "name": "retriever_one",
                     "input": {"query": "query: what is weather in sf", "docs": []},
-                    "triggers": (
-                        "branch:to:retriever_one",
-                        "rewrite_query",
-                    ),
+                    "triggers": ("branch:to:retriever_one",),
                 },
             },
         ),
@@ -5552,10 +5546,7 @@ def test_in_one_fan_out_out_one_graph_state() -> None:
                     "id": AnyStr(),
                     "name": "retriever_two",
                     "input": {"query": "query: what is weather in sf", "docs": []},
-                    "triggers": (
-                        "branch:to:retriever_two",
-                        "rewrite_query",
-                    ),
+                    "triggers": ("branch:to:retriever_two",),
                 },
             },
         ),
@@ -5617,7 +5608,7 @@ def test_in_one_fan_out_out_one_graph_state() -> None:
                         "query": "query: what is weather in sf",
                         "docs": ["doc1", "doc2", "doc3", "doc4"],
                     },
-                    "triggers": ("branch:to:qa", "retriever_one", "retriever_two"),
+                    "triggers": ("branch:to:qa",),
                 },
             },
         ),
@@ -6643,7 +6634,7 @@ def test_branch_then(
                 "id": AnyStr(),
                 "name": "prepare",
                 "input": {"my_key": "value", "market": "DE"},
-                "triggers": ("branch:to:prepare", "start:prepare"),
+                "triggers": ("branch:to:prepare",),
             },
         },
         {
@@ -7795,7 +7786,7 @@ def test_nested_graph_state(
                         "langgraph_node": "inner",
                         "langgraph_path": [PULL, "inner"],
                         "langgraph_step": 2,
-                        "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                        "langgraph_triggers": ["branch:to:inner"],
                         "langgraph_checkpoint_ns": AnyStr("inner:"),
                     },
                     created_at=AnyStr(),
@@ -7990,7 +7981,7 @@ def test_nested_graph_state(
                 "langgraph_node": "inner",
                 "langgraph_path": [PULL, "inner"],
                 "langgraph_step": 2,
-                "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                "langgraph_triggers": ["branch:to:inner"],
                 "langgraph_checkpoint_ns": AnyStr("inner:"),
             },
             created_at=AnyStr(),
@@ -8033,7 +8024,7 @@ def test_nested_graph_state(
                 "langgraph_node": "inner",
                 "langgraph_path": [PULL, "inner"],
                 "langgraph_step": 2,
-                "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                "langgraph_triggers": ["branch:to:inner"],
                 "langgraph_checkpoint_ns": AnyStr("inner:"),
             },
             created_at=AnyStr(),
@@ -8082,7 +8073,7 @@ def test_nested_graph_state(
                 "langgraph_node": "inner",
                 "langgraph_path": [PULL, "inner"],
                 "langgraph_step": 2,
-                "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                "langgraph_triggers": ["branch:to:inner"],
                 "langgraph_checkpoint_ns": AnyStr("inner:"),
             },
             created_at=AnyStr(),
@@ -8516,7 +8507,7 @@ def test_doubly_nested_graph_state(
             "langgraph_node": "child_1",
             "langgraph_path": [PULL, AnyStr("child_1")],
             "langgraph_step": 1,
-            "langgraph_triggers": ["branch:to:child_1", AnyStr("start:child_1")],
+            "langgraph_triggers": ["branch:to:child_1"],
         },
         created_at=AnyStr(),
         parent_config=(
@@ -8602,7 +8593,6 @@ def test_doubly_nested_graph_state(
                                     "langgraph_step": 1,
                                     "langgraph_triggers": [
                                         "branch:to:child_1",
-                                        AnyStr("start:child_1"),
                                     ],
                                 },
                                 created_at=AnyStr(),
@@ -8650,7 +8640,7 @@ def test_doubly_nested_graph_state(
                         "langgraph_node": "child",
                         "langgraph_path": [PULL, AnyStr("child")],
                         "langgraph_step": 2,
-                        "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                        "langgraph_triggers": ["branch:to:child"],
                         "langgraph_checkpoint_ns": AnyStr("child:"),
                     },
                     created_at=AnyStr(),
@@ -8946,7 +8936,7 @@ def test_doubly_nested_graph_state(
                 "langgraph_node": "child",
                 "langgraph_path": [PULL, AnyStr("child")],
                 "langgraph_step": 2,
-                "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                "langgraph_triggers": ["branch:to:child"],
                 "langgraph_checkpoint_ns": AnyStr("child:"),
             },
             created_at=AnyStr(),
@@ -8985,7 +8975,7 @@ def test_doubly_nested_graph_state(
                 "langgraph_node": "child",
                 "langgraph_path": [PULL, AnyStr("child")],
                 "langgraph_step": 2,
-                "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                "langgraph_triggers": ["branch:to:child"],
                 "langgraph_checkpoint_ns": AnyStr("child:"),
             },
             created_at=AnyStr(),
@@ -9037,7 +9027,7 @@ def test_doubly_nested_graph_state(
                 "langgraph_node": "child",
                 "langgraph_path": [PULL, AnyStr("child")],
                 "langgraph_step": 2,
-                "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                "langgraph_triggers": ["branch:to:child"],
                 "langgraph_checkpoint_ns": AnyStr("child:"),
             },
             created_at=AnyStr(),
@@ -9091,7 +9081,7 @@ def test_doubly_nested_graph_state(
                     AnyStr("child_1"),
                 ],
                 "langgraph_step": 1,
-                "langgraph_triggers": ["branch:to:child_1", AnyStr("start:child_1")],
+                "langgraph_triggers": ["branch:to:child_1"],
             },
             created_at=AnyStr(),
             parent_config={
@@ -9146,7 +9136,7 @@ def test_doubly_nested_graph_state(
                     AnyStr("child_1"),
                 ],
                 "langgraph_step": 1,
-                "langgraph_triggers": ["branch:to:child_1", AnyStr("start:child_1")],
+                "langgraph_triggers": ["branch:to:child_1"],
             },
             created_at=AnyStr(),
             parent_config={
@@ -9208,7 +9198,7 @@ def test_doubly_nested_graph_state(
                     AnyStr("child_1"),
                 ],
                 "langgraph_step": 1,
-                "langgraph_triggers": ["branch:to:child_1", AnyStr("start:child_1")],
+                "langgraph_triggers": ["branch:to:child_1"],
             },
             created_at=AnyStr(),
             parent_config={
@@ -9270,7 +9260,7 @@ def test_doubly_nested_graph_state(
                     AnyStr("child_1"),
                 ],
                 "langgraph_step": 1,
-                "langgraph_triggers": ["branch:to:child_1", AnyStr("start:child_1")],
+                "langgraph_triggers": ["branch:to:child_1"],
             },
             created_at=AnyStr(),
             parent_config=None,

libs/langgraph/tests/test_large_cases_async.py

@@ -2300,11 +2300,7 @@ async def test_prebuilt_tool_chat() -> None:
             {
                 "langgraph_step": 1,
                 "langgraph_node": "agent",
-                "langgraph_triggers": (
-                    "branch:to:agent",
-                    "start:agent",
-                    "tools",
-                ),
+                "langgraph_triggers": ("branch:to:agent",),
                 "langgraph_path": ("__pregel_pull", "agent"),
                 "langgraph_checkpoint_ns": AnyStr("agent:"),
                 "checkpoint_ns": AnyStr("agent:"),
@@ -2363,11 +2359,7 @@ async def test_prebuilt_tool_chat() -> None:
             {
                 "langgraph_step": 3,
                 "langgraph_node": "agent",
-                "langgraph_triggers": (
-                    "branch:to:agent",
-                    "start:agent",
-                    "tools",
-                ),
+                "langgraph_triggers": ("branch:to:agent",),
                 "langgraph_path": ("__pregel_pull", "agent"),
                 "langgraph_checkpoint_ns": AnyStr("agent:"),
                 "checkpoint_ns": AnyStr("agent:"),
@@ -2410,11 +2402,7 @@ async def test_prebuilt_tool_chat() -> None:
             {
                 "langgraph_step": 5,
                 "langgraph_node": "agent",
-                "langgraph_triggers": (
-                    "branch:to:agent",
-                    "start:agent",
-                    "tools",
-                ),
+                "langgraph_triggers": ("branch:to:agent",),
                 "langgraph_path": ("__pregel_pull", "agent"),
                 "langgraph_checkpoint_ns": AnyStr("agent:"),
                 "checkpoint_ns": AnyStr("agent:"),
@@ -3895,10 +3883,7 @@ async def test_in_one_fan_out_out_one_graph_state() -> None:
                     "id": AnyStr(),
                     "name": "rewrite_query",
                     "input": {"query": "what is weather in sf", "docs": []},
-                    "triggers": (
-                        "branch:to:rewrite_query",
-                        "start:rewrite_query",
-                    ),
+                    "triggers": ("branch:to:rewrite_query",),
                 },
             },
         ),
@@ -3929,10 +3914,7 @@ async def test_in_one_fan_out_out_one_graph_state() -> None:
                     "id": AnyStr(),
                     "name": "retriever_one",
                     "input": {"query": "query: what is weather in sf", "docs": []},
-                    "triggers": (
-                        "branch:to:retriever_one",
-                        "rewrite_query",
-                    ),
+                    "triggers": ("branch:to:retriever_one",),
                 },
             },
         ),
@@ -3946,10 +3928,7 @@ async def test_in_one_fan_out_out_one_graph_state() -> None:
                     "id": AnyStr(),
                     "name": "retriever_two",
                     "input": {"query": "query: what is weather in sf", "docs": []},
-                    "triggers": (
-                        "branch:to:retriever_two",
-                        "rewrite_query",
-                    ),
+                    "triggers": ("branch:to:retriever_two",),
                 },
             },
         ),
@@ -4011,7 +3990,7 @@ async def test_in_one_fan_out_out_one_graph_state() -> None:
                         "query": "query: what is weather in sf",
                         "docs": ["doc1", "doc2", "doc3", "doc4"],
                     },
-                    "triggers": ("branch:to:qa", "retriever_one", "retriever_two"),
+                    "triggers": ("branch:to:qa",),
                 },
             },
         ),
@@ -4486,10 +4465,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                     "id": AnyStr(),
                     "name": "prepare",
                     "input": {"my_key": "value", "market": "DE"},
-                    "triggers": (
-                        "branch:to:prepare",
-                        "start:prepare",
-                    ),
+                    "triggers": ("branch:to:prepare",),
                 },
             },
             {
@@ -4805,10 +4781,7 @@ async def test_branch_then(checkpointer_name: str) -> None:
                     "id": AnyStr(),
                     "name": "prepare",
                     "input": {"my_key": "value", "market": "DE"},
-                    "triggers": (
-                        "branch:to:prepare",
-                        "start:prepare",
-                    ),
+                    "triggers": ("branch:to:prepare",),
                 },
             },
             {
@@ -5363,7 +5336,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                             "langgraph_node": "inner",
                             "langgraph_path": [PULL, "inner"],
                             "langgraph_step": 2,
-                            "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                            "langgraph_triggers": ["branch:to:inner"],
                             "langgraph_checkpoint_ns": AnyStr("inner:"),
                         },
                         created_at=AnyStr(),
@@ -5560,7 +5533,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_node": "inner",
                     "langgraph_path": [PULL, "inner"],
                     "langgraph_step": 2,
-                    "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                    "langgraph_triggers": ["branch:to:inner"],
                     "langgraph_checkpoint_ns": AnyStr("inner:"),
                 },
                 created_at=AnyStr(),
@@ -5603,7 +5576,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_node": "inner",
                     "langgraph_path": [PULL, "inner"],
                     "langgraph_step": 2,
-                    "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                    "langgraph_triggers": ["branch:to:inner"],
                     "langgraph_checkpoint_ns": AnyStr("inner:"),
                 },
                 created_at=AnyStr(),
@@ -5652,7 +5625,7 @@ async def test_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_node": "inner",
                     "langgraph_path": [PULL, "inner"],
                     "langgraph_step": 2,
-                    "langgraph_triggers": ["branch:to:inner", "outer_1"],
+                    "langgraph_triggers": ["branch:to:inner"],
                     "langgraph_checkpoint_ns": AnyStr("inner:"),
                 },
                 created_at=AnyStr(),
@@ -6090,7 +6063,9 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                 "langgraph_node": "child_1",
                 "langgraph_path": [PULL, AnyStr("child_1")],
                 "langgraph_step": 1,
-                "langgraph_triggers": ["branch:to:child_1", "start:child_1"],
+                "langgraph_triggers": [
+                    "branch:to:child_1",
+                ],
             },
             created_at=AnyStr(),
             parent_config=(
@@ -6178,7 +6153,6 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                                         "langgraph_step": 1,
                                         "langgraph_triggers": [
                                             "branch:to:child_1",
-                                            "start:child_1",
                                         ],
                                     },
                                     created_at=AnyStr(),
@@ -6230,7 +6204,6 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                             "langgraph_step": 2,
                             "langgraph_triggers": [
                                 "branch:to:child",
-                                AnyStr("parent_1"),
                             ],
                             "langgraph_checkpoint_ns": AnyStr("child:"),
                         },
@@ -6529,7 +6502,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_node": "child",
                     "langgraph_path": [PULL, AnyStr("child")],
                     "langgraph_step": 2,
-                    "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                    "langgraph_triggers": ["branch:to:child"],
                     "langgraph_checkpoint_ns": AnyStr("child:"),
                 },
                 created_at=AnyStr(),
@@ -6568,7 +6541,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_node": "child",
                     "langgraph_path": [PULL, AnyStr("child")],
                     "langgraph_step": 2,
-                    "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                    "langgraph_triggers": ["branch:to:child"],
                     "langgraph_checkpoint_ns": AnyStr("child:"),
                 },
                 created_at=AnyStr(),
@@ -6620,7 +6593,7 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_node": "child",
                     "langgraph_path": [PULL, AnyStr("child")],
                     "langgraph_step": 2,
-                    "langgraph_triggers": ["branch:to:child", AnyStr("parent_1")],
+                    "langgraph_triggers": ["branch:to:child"],
                     "langgraph_checkpoint_ns": AnyStr("child:"),
                 },
                 created_at=AnyStr(),
@@ -6680,7 +6653,6 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_step": 1,
                     "langgraph_triggers": [
                         "branch:to:child_1",
-                        AnyStr("start:child_1"),
                     ],
                 },
                 created_at=AnyStr(),
@@ -6738,7 +6710,6 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_step": 1,
                     "langgraph_triggers": [
                         "branch:to:child_1",
-                        AnyStr("start:child_1"),
                     ],
                 },
                 created_at=AnyStr(),
@@ -6803,7 +6774,6 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_step": 1,
                     "langgraph_triggers": [
                         "branch:to:child_1",
-                        AnyStr("start:child_1"),
                     ],
                 },
                 created_at=AnyStr(),
@@ -6868,7 +6838,6 @@ async def test_doubly_nested_graph_state(checkpointer_name: str) -> None:
                     "langgraph_step": 1,
                     "langgraph_triggers": [
                         "branch:to:child_1",
-                        AnyStr("start:child_1"),
                     ],
                 },
                 created_at=AnyStr(),

libs/langgraph/tests/test_pregel.py

@@ -1187,15 +1187,13 @@ def test_pending_writes_resume(
     assert checkpoint is not None
     # should contain error from "two"
     expected_writes = [
-        (AnyStr(), "one", "one"),
         (AnyStr(), "value", 2),
         (AnyStr(), ERROR, 'ConnectionError("I\'m not good")'),
     ]
-    assert len(checkpoint.pending_writes) == 3
+    assert len(checkpoint.pending_writes) == 2
     assert all(w in expected_writes for w in checkpoint.pending_writes)
     # both non-error pending writes come from same task
     non_error_writes = [w for w in checkpoint.pending_writes if w[1] != ERROR]
-    assert non_error_writes[0][0] == non_error_writes[1][0]
     # error write is from the other task
     error_write = next(w for w in checkpoint.pending_writes if w[1] == ERROR)
     assert error_write[0] != non_error_writes[0][0]
@@ -1242,10 +1240,10 @@ def test_pending_writes_resume(
             "pending_sends": [],
             "versions_seen": {
                 "one": {
-                    "start:one": AnyVersion(),
+                    "branch:to:one": AnyVersion(),
                 },
                 "two": {
-                    "start:two": AnyVersion(),
+                    "branch:to:two": AnyVersion(),
                 },
                 "__input__": {},
                 "__start__": {
@@ -1254,19 +1252,17 @@ def test_pending_writes_resume(
                 "__interrupt__": {
                     "value": AnyVersion(),
                     "__start__": AnyVersion(),
-                    "start:one": AnyVersion(),
-                    "start:two": AnyVersion(),
+                    "branch:to:one": AnyVersion(),
+                    "branch:to:two": AnyVersion(),
                 },
             },
             "channel_versions": {
-                "one": AnyVersion(),
-                "two": AnyVersion(),
                 "value": AnyVersion(),
                 "__start__": AnyVersion(),
-                "start:one": AnyVersion(),
-                "start:two": AnyVersion(),
+                "branch:to:one": AnyVersion(),
+                "branch:to:two": AnyVersion(),
             },
-            "channel_values": {"one": "one", "two": "two", "value": 6},
+            "channel_values": {"value": 6},
         },
         metadata={
             "parents": {},
@@ -1309,13 +1305,13 @@ def test_pending_writes_resume(
             "channel_versions": {
                 "value": AnyVersion(),
                 "__start__": AnyVersion(),
-                "start:one": AnyVersion(),
-                "start:two": AnyVersion(),
+                "branch:to:one": AnyVersion(),
+                "branch:to:two": AnyVersion(),
             },
             "channel_values": {
                 "value": 1,
-                "start:one": "__start__",
-                "start:two": "__start__",
+                "branch:to:one": "__start__",
+                "branch:to:two": "__start__",
             },
         },
         metadata={
@@ -1333,10 +1329,8 @@ def test_pending_writes_resume(
             }
         },
         pending_writes=UnsortedSequence(
-            (AnyStr(), "one", "one"),
             (AnyStr(), "value", 2),
             (AnyStr(), "__error__", 'ConnectionError("I\'m not good")'),
-            (AnyStr(), "two", "two"),
             (AnyStr(), "value", 3),
         ),
     )
@@ -1369,8 +1363,8 @@ def test_pending_writes_resume(
         parent_config=None,
         pending_writes=UnsortedSequence(
             (AnyStr(), "value", 1),
-            (AnyStr(), "start:one", "__start__"),
-            (AnyStr(), "start:two", "__start__"),
+            (AnyStr(), "branch:to:one", "__start__"),
+            (AnyStr(), "branch:to:two", "__start__"),
         ),
     )
 
@@ -6876,10 +6870,7 @@ def test_tags_stream_mode_messages() -> None:
             {
                 "langgraph_step": 1,
                 "langgraph_node": "call_model",
-                "langgraph_triggers": (
-                    "branch:to:call_model",
-                    "start:call_model",
-                ),
+                "langgraph_triggers": ("branch:to:call_model",),
                 "langgraph_path": ("__pregel_pull", "call_model"),
                 "langgraph_checkpoint_ns": AnyStr("call_model:"),
                 "checkpoint_ns": AnyStr("call_model:"),

libs/langgraph/tests/test_pregel_async.py

@@ -2021,15 +2021,13 @@ async def test_pending_writes_resume(
         assert checkpoint is not None
         # should contain error from "two"
         expected_writes = [
-            (AnyStr(), "one", "one"),
             (AnyStr(), "value", 2),
             (AnyStr(), ERROR, 'ConnectionError("I\'m not good")'),
         ]
-        assert len(checkpoint.pending_writes) == 3
+        assert len(checkpoint.pending_writes) == 2
         assert all(w in expected_writes for w in checkpoint.pending_writes)
         # both non-error pending writes come from same task
         non_error_writes = [w for w in checkpoint.pending_writes if w[1] != ERROR]
-        assert non_error_writes[0][0] == non_error_writes[1][0]
         # error write is from the other task
         error_write = next(w for w in checkpoint.pending_writes if w[1] == ERROR)
         assert error_write[0] != non_error_writes[0][0]
@@ -2076,10 +2074,10 @@ async def test_pending_writes_resume(
                 "pending_sends": [],
                 "versions_seen": {
                     "one": {
-                        "start:one": AnyVersion(),
+                        "branch:to:one": AnyVersion(),
                     },
                     "two": {
-                        "start:two": AnyVersion(),
+                        "branch:to:two": AnyVersion(),
                     },
                     "__input__": {},
                     "__start__": {
@@ -2088,19 +2086,17 @@ async def test_pending_writes_resume(
                     "__interrupt__": {
                         "value": AnyVersion(),
                         "__start__": AnyVersion(),
-                        "start:one": AnyVersion(),
-                        "start:two": AnyVersion(),
+                        "branch:to:one": AnyVersion(),
+                        "branch:to:two": AnyVersion(),
                     },
                 },
                 "channel_versions": {
-                    "one": AnyVersion(),
-                    "two": AnyVersion(),
                     "value": AnyVersion(),
                     "__start__": AnyVersion(),
-                    "start:one": AnyVersion(),
-                    "start:two": AnyVersion(),
+                    "branch:to:one": AnyVersion(),
+                    "branch:to:two": AnyVersion(),
                 },
-                "channel_values": {"one": "one", "two": "two", "value": 6},
+                "channel_values": {"value": 6},
             },
             metadata={
                 "parents": {},
@@ -2145,13 +2141,13 @@ async def test_pending_writes_resume(
                 "channel_versions": {
                     "value": AnyVersion(),
                     "__start__": AnyVersion(),
-                    "start:one": AnyVersion(),
-                    "start:two": AnyVersion(),
+                    "branch:to:one": AnyVersion(),
+                    "branch:to:two": AnyVersion(),
                 },
                 "channel_values": {
                     "value": 1,
-                    "start:one": "__start__",
-                    "start:two": "__start__",
+                    "branch:to:one": "__start__",
+                    "branch:to:two": "__start__",
                 },
             },
             metadata={
@@ -2171,10 +2167,8 @@ async def test_pending_writes_resume(
                 }
             },
             pending_writes=UnsortedSequence(
-                (AnyStr(), "one", "one"),
                 (AnyStr(), "value", 2),
                 (AnyStr(), "__error__", 'ConnectionError("I\'m not good")'),
-                (AnyStr(), "two", "two"),
                 (AnyStr(), "value", 3),
             ),
         )
@@ -2207,8 +2201,8 @@ async def test_pending_writes_resume(
             parent_config=None,
             pending_writes=UnsortedSequence(
                 (AnyStr(), "value", 1),
-                (AnyStr(), "start:one", "__start__"),
-                (AnyStr(), "start:two", "__start__"),
+                (AnyStr(), "branch:to:one", "__start__"),
+                (AnyStr(), "branch:to:two", "__start__"),
             ),
         )
 
@@ -7593,10 +7587,7 @@ async def test_tags_stream_mode_messages() -> None:
             {
                 "langgraph_step": 1,
                 "langgraph_node": "call_model",
-                "langgraph_triggers": (
-                    "branch:to:call_model",
-                    "start:call_model",
-                ),
+                "langgraph_triggers": ("branch:to:call_model",),
                 "langgraph_path": ("__pregel_pull", "call_model"),
                 "langgraph_checkpoint_ns": AnyStr("call_model:"),
                 "checkpoint_ns": AnyStr("call_model:"),

libs/langgraph/tests/test_remote_graph.py

@@ -12,6 +12,7 @@ from langgraph_sdk.schema import StreamPart
 from langgraph.errors import GraphInterrupt
 from langgraph.pregel.remote import RemoteGraph
 from langgraph.pregel.types import StateSnapshot
+from langgraph.types import Interrupt
 
 
 def test_with_config():
@@ -415,7 +416,19 @@ def test_stream():
         StreamPart(event="values", data={"chunk": "data2"}),
         StreamPart(event="values", data={"chunk": "data3"}),
         StreamPart(event="updates", data={"chunk": "data4"}),
-        StreamPart(event="updates", data={"__interrupt__": ()}),
+        StreamPart(
+            event="updates",
+            data={
+                "__interrupt__": [
+                    {
+                        "value": {"question": "Does this look good?"},
+                        "resumable": True,
+                        "ns": ["some_ns"],
+                        "when": "during",
+                    }
+                ]
+            },
+        ),
     ]
 
     # call method / assertions
@@ -426,7 +439,7 @@ def test_stream():
 
     # stream modes doesn't include 'updates'
     stream_parts = []
-    with pytest.raises(GraphInterrupt):
+    with pytest.raises(GraphInterrupt) as exc:
         for stream_part in remote_pregel.stream(
             {"input": "data"},
             config={"configurable": {"thread_id": "thread_1"}},
@@ -434,6 +447,15 @@ def test_stream():
         ):
             stream_parts.append(stream_part)
 
+    assert exc.value.args[0] == [
+        Interrupt(
+            value={"question": "Does this look good?"},
+            resumable=True,
+            ns=["some_ns"],
+            when="during",
+        )
+    ]
+
     assert stream_parts == [
         {"chunk": "data1"},
         {"chunk": "data2"},
@@ -517,7 +539,19 @@ async def test_astream():
         StreamPart(event="values", data={"chunk": "data2"}),
         StreamPart(event="values", data={"chunk": "data3"}),
         StreamPart(event="updates", data={"chunk": "data4"}),
-        StreamPart(event="updates", data={"__interrupt__": ()}),
+        StreamPart(
+            event="updates",
+            data={
+                "__interrupt__": [
+                    {
+                        "value": {"question": "Does this look good?"},
+                        "resumable": True,
+                        "ns": ["some_ns"],
+                        "when": "during",
+                    }
+                ]
+            },
+        ),
     ]
     mock_async_client.runs.stream.return_value = async_iter
 
@@ -529,7 +563,7 @@ async def test_astream():
 
     # stream modes doesn't include 'updates'
     stream_parts = []
-    with pytest.raises(GraphInterrupt):
+    with pytest.raises(GraphInterrupt) as exc:
         async for stream_part in remote_pregel.astream(
             {"input": "data"},
             config={"configurable": {"thread_id": "thread_1"}},
@@ -537,6 +571,15 @@ async def test_astream():
         ):
             stream_parts.append(stream_part)
 
+    assert exc.value.args[0] == [
+        Interrupt(
+            value={"question": "Does this look good?"},
+            resumable=True,
+            ns=["some_ns"],
+            when="during",
+        )
+    ]
+
     assert stream_parts == [
         {"chunk": "data1"},
         {"chunk": "data2"},

libs/prebuilt/langgraph/prebuilt/tool_node.py

@@ -2,6 +2,7 @@ import asyncio
 import inspect
 import json
 from copy import copy, deepcopy
+from dataclasses import replace
 from typing import (
     Any,
     Callable,
@@ -35,7 +36,7 @@ from typing_extensions import Annotated, get_args, get_origin
 
 from langgraph.errors import GraphBubbleUp
 from langgraph.store.base import BaseStore
-from langgraph.types import Command
+from langgraph.types import Command, Send
 from langgraph.utils.runnable import RunnableCallable
 
 INVALID_TOOL_NAME_ERROR_TEMPLATE = (
@@ -239,25 +240,7 @@ class ToolNode(RunnableCallable):
                 *executor.map(self._run_one, tool_calls, input_types, config_list)
             ]
 
-        # preserve existing behavior for non-command tool outputs for backwards
-        # compatibility
-        if not any(isinstance(output, Command) for output in outputs):
-            # TypedDict, pydantic, dataclass, etc. should all be able to load from dict
-            return outputs if input_type == "list" else {self.messages_key: outputs}
-
-        # LangGraph will automatically handle list of Command and non-command node
-        # updates
-        combined_outputs: list[
-            Command | list[ToolMessage] | dict[str, list[ToolMessage]]
-        ] = []
-        for output in outputs:
-            if isinstance(output, Command):
-                combined_outputs.append(output)
-            else:
-                combined_outputs.append(
-                    [output] if input_type == "list" else {self.messages_key: [output]}
-                )
-        return combined_outputs
+        return self._combine_tool_outputs(outputs, input_type)
 
     async def _afunc(
         self,
@@ -275,22 +258,50 @@ class ToolNode(RunnableCallable):
             *(self._arun_one(call, input_type, config) for call in tool_calls)
         )
 
-        # preserve existing behavior for non-command tool outputs for backwards compatibility
+        return self._combine_tool_outputs(outputs, input_type)
+
+    def _combine_tool_outputs(
+        self,
+        outputs: list[ToolMessage],
+        input_type: Literal["list", "dict", "tool_calls"],
+    ) -> list[Union[Command, list[ToolMessage], dict[str, list[ToolMessage]]]]:
+        # preserve existing behavior for non-command tool outputs for backwards
+        # compatibility
         if not any(isinstance(output, Command) for output in outputs):
             # TypedDict, pydantic, dataclass, etc. should all be able to load from dict
             return outputs if input_type == "list" else {self.messages_key: outputs}
 
-        # LangGraph will automatically handle list of Command and non-command node updates
+        # LangGraph will automatically handle list of Command and non-command node
+        # updates
         combined_outputs: list[
             Command | list[ToolMessage] | dict[str, list[ToolMessage]]
         ] = []
+
+        # combine all parent commands with goto into a single parent command
+        parent_command: Optional[Command] = None
         for output in outputs:
             if isinstance(output, Command):
-                combined_outputs.append(output)
+                if (
+                    output.graph is Command.PARENT
+                    and isinstance(output.goto, list)
+                    and all(isinstance(send, Send) for send in output.goto)
+                ):
+                    if parent_command:
+                        parent_command = replace(
+                            parent_command,
+                            goto=cast(list[Send], parent_command.goto) + output.goto,
+                        )
+                    else:
+                        parent_command = Command(graph=Command.PARENT, goto=output.goto)
+                else:
+                    combined_outputs.append(output)
             else:
                 combined_outputs.append(
                     [output] if input_type == "list" else {self.messages_key: [output]}
                 )
+
+        if parent_command:
+            combined_outputs.append(parent_command)
         return combined_outputs
 
     def _run_one(

libs/prebuilt/poetry.lock

@@ -466,7 +466,7 @@ develop = true
 
 [package.dependencies]
 langchain-core = ">=0.2.38,<0.4"
-msgpack = "^1.1.0"
+ormsgpack = "^1.8.0"
 
 [package.source]
 type = "directory"
@@ -554,80 +554,6 @@ zstandard = ">=0.23.0,<0.24.0"
 langsmith-pyo3 = ["langsmith-pyo3 (>=0.1.0rc2,<0.2.0)"]
 pytest = ["pytest (>=7.0.0)", "rich (>=13.9.4,<14.0.0)"]
 
-[[package]]
-name = "msgpack"
-version = "1.1.0"
-description = "MessagePack serializer"
-optional = false
-python-versions = ">=3.8"
-groups = ["main", "dev"]
-files = [
-    {file = "msgpack-1.1.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:7ad442d527a7e358a469faf43fda45aaf4ac3249c8310a82f0ccff9164e5dccd"},
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libs/prebuilt/pyproject.toml

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 name = "langgraph-prebuilt"
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+version = "0.1.7"
 description = "Library with high-level APIs for creating and executing LangGraph agents and tools."
 authors = []
 license = "MIT"

libs/prebuilt/tests/test_react_agent.py

@@ -97,7 +97,6 @@ def test_no_prompt(
                 _AnyIdHumanMessage(content="hi?"),
                 AIMessage(content="hi?", id="0"),
             ],
-            "agent": "agent",
         }
         assert saved.metadata == {
             "parents": {},
@@ -129,7 +128,6 @@ async def test_no_prompt_async(checkpointer_name: str) -> None:
                     _AnyIdHumanMessage(content="hi?"),
                     AIMessage(content="hi?", id="0"),
                 ],
-                "agent": "agent",
             }
             assert saved.metadata == {
                 "parents": {},

libs/prebuilt/tests/test_tool_node.py

@@ -17,7 +17,7 @@ from pydantic.v1 import ValidationError as ValidationErrorV1
 from langgraph.errors import NodeInterrupt
 from langgraph.prebuilt import ToolNode
 from langgraph.prebuilt.tool_node import TOOL_CALL_ERROR_TEMPLATE
-from langgraph.types import Command
+from langgraph.types import Command, Send
 from tests.conftest import IS_LANGCHAIN_CORE_030_OR_GREATER
 
 pytestmark = pytest.mark.anyio
@@ -1051,3 +1051,90 @@ async def test_tool_node_command_list_input():
             )
         ]
     ) == [Command(update=[], graph=Command.PARENT)]
+
+
+def test_tool_node_parent_command_with_send():
+    from langchain_core.tools.base import InjectedToolCallId
+
+    @dec_tool
+    def transfer_to_alice(tool_call_id: Annotated[str, InjectedToolCallId]):
+        """Transfer to Alice"""
+        return Command(
+            goto=[
+                Send(
+                    "alice",
+                    {
+                        "messages": [
+                            ToolMessage(
+                                content="Transferred to Alice",
+                                name="transfer_to_alice",
+                                tool_call_id=tool_call_id,
+                            )
+                        ]
+                    },
+                )
+            ],
+            graph=Command.PARENT,
+        )
+
+    @dec_tool
+    def transfer_to_bob(tool_call_id: Annotated[str, InjectedToolCallId]):
+        """Transfer to Bob"""
+        return Command(
+            goto=[
+                Send(
+                    "bob",
+                    {
+                        "messages": [
+                            ToolMessage(
+                                content="Transferred to Bob",
+                                name="transfer_to_bob",
+                                tool_call_id=tool_call_id,
+                            )
+                        ]
+                    },
+                )
+            ],
+            graph=Command.PARENT,
+        )
+
+    tool_calls = [
+        {"args": {}, "id": "1", "name": "transfer_to_alice", "type": "tool_call"},
+        {"args": {}, "id": "2", "name": "transfer_to_bob", "type": "tool_call"},
+    ]
+
+    result = ToolNode([transfer_to_alice, transfer_to_bob]).invoke(
+        [AIMessage("", tool_calls=tool_calls)]
+    )
+
+    assert result == [
+        Command(
+            goto=[
+                Send(
+                    "alice",
+                    {
+                        "messages": [
+                            ToolMessage(
+                                content="Transferred to Alice",
+                                name="transfer_to_alice",
+                                tool_call_id="1",
+                            )
+                        ]
+                    },
+                ),
+                Send(
+                    "bob",
+                    {
+                        "messages": [
+                            ToolMessage(
+                                content="Transferred to Bob",
+                                name="transfer_to_bob",
+                                tool_call_id="2",
+                            )
+                        ]
+                    },
+                ),
+            ],
+            graph=Command.PARENT,
+        )
+    ]

libs/scheduler-kafka/poetry.lock

@@ -589,14 +589,14 @@ zstd = ["zstandard"]
 
 [[package]]
 name = "langchain-core"
-version = "0.3.47"
+version = "0.3.48"
 description = "Building applications with LLMs through composability"
 optional = false
 python-versions = "<4.0,>=3.9"
 groups = ["main", "dev"]
 files = [
-    {file = "langchain_core-0.3.47-py3-none-any.whl", hash = "sha256:ef7c78202e6fd9df79fe8128c828d08a95d3878cf4aec282580baf358a3f2ec5"},
-    {file = "langchain_core-0.3.47.tar.gz", hash = "sha256:975a3daabf8e8d583749b3c553cc412d0527d935dfe820317431b475fa0c585a"},
+    {file = "langchain_core-0.3.48-py3-none-any.whl", hash = "sha256:21e4fe84262b9c7ad8aefe7816439ede130893f8a64b8c965cd9695c2be91c73"},
+    {file = "langchain_core-0.3.48.tar.gz", hash = "sha256:be4b2fe36d8a11fb4b6b13e0808b12aea9f25e345624ffafe1d606afb6059f21"},
 ]
 
 [package.dependencies]
@@ -644,7 +644,7 @@ develop = true
 
 [package.dependencies]
 langchain-core = ">=0.2.38,<0.4"
-msgpack = "^1.1.0"
+ormsgpack = "^1.8.0"
 
 [package.source]
 type = "directory"
@@ -672,14 +672,14 @@ url = "../checkpoint-postgres"
 
 [[package]]
 name = "langgraph-prebuilt"
-version = "0.1.3"
+version = "0.1.4"
 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"]
 files = [
-    {file = "langgraph_prebuilt-0.1.3-py3-none-any.whl", hash = "sha256:4bb8a6b9c9c7f8eee9c6b151e8b379fad02f60679fed9554cfeb4382c4b9f858"},
-    {file = "langgraph_prebuilt-0.1.3.tar.gz", hash = "sha256:9a9be529cd4419b9ec16b4bc80f6b260d5a680b0705f1a58eb09e78962dc2d71"},
+    {file = "langgraph_prebuilt-0.1.4-py3-none-any.whl", hash = "sha256:23110997d2747cfb7ca2649ca78c6fc950a6646a5c96b7e9d8b7d19221f896a1"},
+    {file = "langgraph_prebuilt-0.1.4.tar.gz", hash = "sha256:61a5543c6d1be3d54bf53147763b4510d6ab2989347a16d1e9c366ef4dbcf0d8"},
 ]
 
 [package.dependencies]
@@ -732,80 +732,6 @@ openai-agents = ["openai-agents (>=0.0.3,<0.0.4)"]
 otel = ["opentelemetry-api (>=1.30.0,<2.0.0)", "opentelemetry-exporter-otlp-proto-http (>=1.30.0,<2.0.0)", "opentelemetry-sdk (>=1.30.0,<2.0.0)"]
 pytest = ["pytest (>=7.0.0)", "rich (>=13.9.4,<14.0.0)"]
 
-[[package]]
-name = "msgpack"
-version = "1.1.0"
-description = "MessagePack serializer"
-optional = false
-python-versions = ">=3.8"
-groups = ["main", "dev"]
-files = [
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-]
-
 [[package]]
 name = "mypy"
 version = "1.11.0"
@@ -933,6 +859,42 @@ files = [
     {file = "orjson-3.10.7.tar.gz", hash = "sha256:75ef0640403f945f3a1f9f6400686560dbfb0fb5b16589ad62cd477043c4eee3"},
 ]
 
+[[package]]
+name = "ormsgpack"
+version = "1.9.0"
+description = "Fast, correct Python msgpack library supporting dataclasses, datetimes, and numpy"
+optional = false
+python-versions = ">=3.9"
+groups = ["main", "dev"]
+files = [
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+    {file = "ormsgpack-1.9.0.tar.gz", hash = "sha256:015e8e6e74e5a1c2bcb9c25fdd8205cad0e8e2d1d32c6a259615aa189b61b8b4"},
+]
+
 [[package]]
 name = "packaging"
 version = "24.1"
@@ -1701,4 +1663,4 @@ cffi = ["cffi (>=1.11)"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.9.0,<4.0"
-content-hash = "1e37504d248cca9356d305105acbcf7acfac714f33d034e7b635bb388dc5e0d3"
+content-hash = "f7462771335bead50dfffa50691d16e8a8e39680e4b3f6e9f8850d4239383b0e"

libs/scheduler-kafka/pyproject.toml

@@ -13,7 +13,7 @@ python = "^3.9.0,<4.0"
 orjson = "^3.10.7"
 crc32c = "^2.7.post1"
 aiokafka = "^0.11.0"
-langgraph = ">=0.2.19,<0.4"
+langgraph = ">=0.2.19,<0.4.0"
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.6.2"

libs/sdk-js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@langchain/langgraph-sdk",
-  "version": "0.0.60",
+  "version": "0.0.62",
   "description": "Client library for interacting with the LangGraph API",
   "type": "module",
   "packageManager": "yarn@1.22.19",

libs/sdk-js/src/react-ui/client.tsx

@@ -109,6 +109,7 @@ class ComponentStore {
 const COMPONENT_STORE = new ComponentStore();
 const EXT_STORE_SYMBOL = Symbol.for("LGUI_EXT_STORE");
 const REQUIRE_SYMBOL = Symbol.for("LGUI_REQUIRE");
+const REQUIRE_EXTRA_SYMBOL = Symbol.for("LGUI_REQUIRE_EXTRA");
 
 interface LoadExternalComponentProps
   extends Pick<React.HTMLAttributes<HTMLDivElement>, "style" | "className"> {
@@ -197,9 +198,17 @@ declare global {
   interface Window {
     [EXT_STORE_SYMBOL]: ComponentStore;
     [REQUIRE_SYMBOL]: (name: string) => unknown;
+    [REQUIRE_EXTRA_SYMBOL]: Record<string, unknown>;
   }
 }
 
+export function experimental_loadShare(name: string, module: unknown) {
+  if (typeof window === "undefined") return;
+
+  window[REQUIRE_EXTRA_SYMBOL] ??= {};
+  window[REQUIRE_EXTRA_SYMBOL][name] = module;
+}
+
 export function bootstrapUiContext() {
   if (typeof window === "undefined") {
     console.warn(
@@ -224,6 +233,14 @@ export function bootstrapUiContext() {
       };
     }
 
+    if (
+      window[REQUIRE_EXTRA_SYMBOL] != null &&
+      typeof window[REQUIRE_EXTRA_SYMBOL] === "object" &&
+      name in window[REQUIRE_EXTRA_SYMBOL]
+    ) {
+      return window[REQUIRE_EXTRA_SYMBOL][name];
+    }
+
     throw new Error(`Unknown module...: ${name}`);
   };
 }

libs/sdk-js/src/react-ui/index.ts

@@ -1,7 +1,11 @@
 import { bootstrapUiContext } from "./client.js";
 bootstrapUiContext();
 
-export { useStreamContext, LoadExternalComponent } from "./client.js";
+export {
+  useStreamContext,
+  LoadExternalComponent,
+  experimental_loadShare,
+} from "./client.js";
 export {
   uiMessageReducer,
   type UIMessage,

libs/sdk-js/src/react/stream.tsx

@@ -782,42 +782,6 @@ export function useStream<
       submittingRef.current = true;
       abortRef.current = new AbortController();
 
-      let usableThreadId = threadId;
-      if (!usableThreadId) {
-        const thread = await client.threads.create();
-        onThreadId(thread.thread_id);
-        usableThreadId = thread.thread_id;
-      }
-
-      const streamMode = unique([
-        ...(submitOptions?.streamMode ?? []),
-        ...trackStreamModeRef.current,
-        ...callbackStreamMode,
-      ]);
-
-      const checkpoint =
-        submitOptions?.checkpoint ?? threadHead?.checkpoint ?? undefined;
-      // @ts-expect-error
-      if (checkpoint != null) delete checkpoint.thread_id;
-
-      const run = (await client.runs.stream(usableThreadId, assistantId, {
-        input: values as Record<string, unknown>,
-        config: submitOptions?.config,
-        command: submitOptions?.command,
-
-        interruptBefore: submitOptions?.interruptBefore,
-        interruptAfter: submitOptions?.interruptAfter,
-        metadata: submitOptions?.metadata,
-        multitaskStrategy: submitOptions?.multitaskStrategy,
-        onCompletion: submitOptions?.onCompletion,
-        onDisconnect: submitOptions?.onDisconnect ?? "cancel",
-
-        signal: abortRef.current.signal,
-
-        checkpoint,
-        streamMode,
-      })) as AsyncGenerator<EventStreamEvent>;
-
       // Unbranch things
       const newPath = submitOptions?.checkpoint?.checkpoint_id
         ? branchByCheckpoint[submitOptions?.checkpoint?.checkpoint_id]?.branch
@@ -842,6 +806,42 @@ export function useStream<
         return values;
       });
 
+      let usableThreadId = threadId;
+      if (!usableThreadId) {
+        const thread = await client.threads.create();
+        onThreadId(thread.thread_id);
+        usableThreadId = thread.thread_id;
+      }
+
+      const streamMode = unique([
+        ...(submitOptions?.streamMode ?? []),
+        ...trackStreamModeRef.current,
+        ...callbackStreamMode,
+      ]);
+
+      const checkpoint =
+        submitOptions?.checkpoint ?? threadHead?.checkpoint ?? undefined;
+      // @ts-expect-error
+      if (checkpoint != null) delete checkpoint.thread_id;
+
+      const run = client.runs.stream(usableThreadId, assistantId, {
+        input: values as Record<string, unknown>,
+        config: submitOptions?.config,
+        command: submitOptions?.command,
+
+        interruptBefore: submitOptions?.interruptBefore,
+        interruptAfter: submitOptions?.interruptAfter,
+        metadata: submitOptions?.metadata,
+        multitaskStrategy: submitOptions?.multitaskStrategy,
+        onCompletion: submitOptions?.onCompletion,
+        onDisconnect: submitOptions?.onDisconnect ?? "cancel",
+
+        signal: abortRef.current.signal,
+
+        checkpoint,
+        streamMode,
+      }) as AsyncGenerator<EventStreamEvent>;
+
       let streamError: StreamError | undefined;
       for await (const { event, data } of run) {
         if (event === "error") {

libs/sdk-js/src/schema.ts

@@ -57,25 +57,25 @@ export interface GraphSchema {
    * The schema for the input state.
    * Missing if unable to generate JSON schema from graph.
    */
-  input_schema?: JSONSchema7;
+  input_schema?: JSONSchema7 | null | undefined;
 
   /**
    * The schema for the output state.
    * Missing if unable to generate JSON schema from graph.
    */
-  output_schema?: JSONSchema7;
+  output_schema?: JSONSchema7 | null | undefined;
 
   /**
    * The schema for the graph state.
    * Missing if unable to generate JSON schema from graph.
    */
-  state_schema?: JSONSchema7;
+  state_schema?: JSONSchema7 | null | undefined;
 
   /**
    * The schema for the graph config.
    * Missing if unable to generate JSON schema from graph.
    */
-  config_schema?: JSONSchema7;
+  config_schema?: JSONSchema7 | null | undefined;
 }
 
 export type Subgraphs = Record<string, GraphSchema>;

libs/sdk-py/langgraph_sdk/auth/types.py

@@ -192,6 +192,18 @@ class BaseUser(typing.Protocol):
         """The permissions associated with the user."""
         ...
 
+    def __getitem__(self, key):
+        """Get a key from your minimal user dict."""
+        ...
+
+    def __contains__(self, key):
+        """Check if a property exists."""
+        ...
+
+    def __iter__(self):
+        """Iterate over the keys of the user."""
+        ...
+
 
 class StudioUser:
     """A user object that's populated from authenticated requests from the LangGraph studio.

libs/sdk-py/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langgraph-sdk"
-version = "0.1.58"
+version = "0.1.60"
 description = "SDK for interacting with LangGraph API"
 authors = []
 license = "MIT"