Files
langgraph/libs/sdk-py/langgraph_sdk/client.py
T

1698 lines
60 KiB
Python

from __future__ import annotations
import asyncio
import logging
import os
import sys
from typing import (
Any,
AsyncIterator,
Dict,
List,
NamedTuple,
Optional,
Union,
overload,
)
import httpx
import httpx_sse
import orjson
from httpx._types import QueryParamTypes
import langgraph_sdk
from langgraph_sdk.schema import (
Assistant,
Config,
Cron,
GraphSchema,
Metadata,
MultitaskStrategy,
OnConflictBehavior,
Run,
RunCreate,
StreamMode,
Thread,
ThreadState,
ThreadStatus,
)
logger = logging.getLogger(__name__)
def get_client(
*, url: Optional[str] = None, api_key: Optional[str] = None
) -> LangGraphClient:
"""Get a LangGraphClient instance.
Args:
url: The URL of the LangGraph API.
api_key: The API key. If not provided, it will be read from the environment.
Precedence:
1. explicit argument
2. LANGGRAPH_API_KEY
3. LANGSMITH_API_KEY
4. LANGCHAIN_API_KEY
"""
transport: Optional[httpx.AsyncBaseTransport] = None
if url is None:
try:
from langgraph_api.server import app # type: ignore
url = "http://api"
transport = httpx.ASGITransport(app, root_path="/noauth")
except Exception:
url = "http://localhost:8123"
if transport is None:
transport = httpx.AsyncHTTPTransport(retries=5)
headers = {
"User-Agent": f"langgraph-sdk-py/{langgraph_sdk.__version__}",
}
api_key = _get_api_key(api_key)
if api_key:
headers["x-api-key"] = api_key
client = httpx.AsyncClient(
base_url=url,
transport=transport,
timeout=httpx.Timeout(connect=5, read=60, write=60, pool=5),
headers=headers,
)
return LangGraphClient(client)
class StreamPart(NamedTuple):
event: str
data: dict
class LangGraphClient:
def __init__(self, client: httpx.AsyncClient) -> None:
self.http = HttpClient(client)
self.assistants = AssistantsClient(self.http)
self.threads = ThreadsClient(self.http)
self.runs = RunsClient(self.http)
self.crons = CronClient(self.http)
class HttpClient:
def __init__(self, client: httpx.AsyncClient) -> None:
self.client = client
async def get(self, path: str, *, params: Optional[QueryParamTypes] = None) -> Any:
"""Make a GET request."""
r = await self.client.get(path, params=params)
try:
r.raise_for_status()
except httpx.HTTPStatusError as e:
body = (await r.aread()).decode()
if sys.version_info >= (3, 11):
e.add_note(body)
else:
logger.error(f"Error from langgraph-api: {body}", exc_info=e)
raise e
return await decode_json(r)
async def post(self, path: str, *, json: Optional[dict]) -> Any:
"""Make a POST request."""
if json is not None:
headers, content = await encode_json(json)
else:
headers, content = {}, b""
r = await self.client.post(path, headers=headers, content=content)
try:
r.raise_for_status()
except httpx.HTTPStatusError as e:
body = (await r.aread()).decode()
if sys.version_info >= (3, 11):
e.add_note(body)
else:
logger.error(f"Error from langgraph-api: {body}", exc_info=e)
raise e
return await decode_json(r)
async def put(self, path: str, *, json: dict) -> Any:
"""Make a PUT request."""
headers, content = await encode_json(json)
r = await self.client.put(path, headers=headers, content=content)
try:
r.raise_for_status()
except httpx.HTTPStatusError as e:
body = (await r.aread()).decode()
if sys.version_info >= (3, 11):
e.add_note(body)
else:
logger.error(f"Error from langgraph-api: {body}", exc_info=e)
raise e
return await decode_json(r)
async def patch(self, path: str, *, json: dict) -> Any:
"""Make a PATCH request."""
headers, content = await encode_json(json)
r = await self.client.patch(path, headers=headers, content=content)
try:
r.raise_for_status()
except httpx.HTTPStatusError as e:
body = (await r.aread()).decode()
if sys.version_info >= (3, 11):
e.add_note(body)
else:
logger.error(f"Error from langgraph-api: {body}", exc_info=e)
raise e
return await decode_json(r)
async def delete(self, path: str) -> None:
"""Make a DELETE request."""
r = await self.client.delete(path)
try:
r.raise_for_status()
except httpx.HTTPStatusError as e:
body = (await r.aread()).decode()
if sys.version_info >= (3, 11):
e.add_note(body)
else:
logger.error(f"Error from langgraph-api: {body}", exc_info=e)
raise e
async def stream(
self, path: str, method: str, *, json: Optional[dict] = None
) -> AsyncIterator[StreamPart]:
"""Stream the results of a request using SSE."""
headers, content = await encode_json(json)
async with httpx_sse.aconnect_sse(
self.client, method, path, headers=headers, content=content
) as sse:
try:
sse.response.raise_for_status()
except httpx.HTTPStatusError as e:
body = (await sse.response.aread()).decode()
if sys.version_info >= (3, 11):
e.add_note(body)
else:
logger.error(f"Error from langgraph-api: {body}", exc_info=e)
raise e
async for event in sse.aiter_sse():
yield StreamPart(
event.event, orjson.loads(event.data) if event.data else None
)
def _orjson_default(obj: Any) -> Any:
if hasattr(obj, "model_dump") and callable(obj.model_dump):
return obj.model_dump()
elif hasattr(obj, "dict") and callable(obj.dict):
return obj.dict()
elif isinstance(obj, (set, frozenset)):
return list(obj)
else:
raise TypeError(f"Object of type {type(obj)} is not JSON serializable")
async def encode_json(json: Any) -> tuple[dict[str, str], bytes]:
body = await asyncio.get_running_loop().run_in_executor(
None,
orjson.dumps,
json,
_orjson_default,
orjson.OPT_SERIALIZE_NUMPY | orjson.OPT_NON_STR_KEYS,
)
content_length = str(len(body))
content_type = "application/json"
headers = {"Content-Length": content_length, "Content-Type": content_type}
return headers, body
async def decode_json(r: httpx.Response) -> Any:
body = await r.aread()
return (
await asyncio.get_running_loop().run_in_executor(None, orjson.loads, body)
if body
else None
)
class AssistantsClient:
def __init__(self, http: HttpClient) -> None:
self.http = http
async def get(self, assistant_id: str) -> Assistant:
"""Get an assistant by ID.
Args:
assistant_id: The ID of the assistant to get.
Returns:
Assistant: Assistant Object.
Example Usage:
assistant = await client.assistants.get(
assistant_id="my_assistant_id"
)
print(assistant)
----------------------------------------------------
{
'assistant_id': 'my_assistant_id',
'graph_id': 'agent',
'created_at': '2024-06-25T17:10:33.109781+00:00',
'updated_at': '2024-06-25T17:10:33.109781+00:00',
'config': {},
'metadata': {'created_by': 'system'}
}
""" # noqa: E501
return await self.http.get(f"/assistants/{assistant_id}")
async def get_graph(self, assistant_id: str) -> dict[str, list[dict[str, Any]]]:
"""Get the graph of an assistant by ID.
Args:
assistant_id: The ID of the assistant to get the graph of.
Returns:
Graph: The graph information for the assistant in JSON format.
Example Usage:
graph_info = await client.assistants.get_graph(
assistant_id="my_assistant_id"
)
print(graph_info)
--------------------------------------------------------------------------------------------------------------------------
{
'nodes':
[
{'id': '__start__', 'type': 'schema', 'data': '__start__'},
{'id': '__end__', 'type': 'schema', 'data': '__end__'},
{'id': 'agent','type': 'runnable','data': {'id': ['langgraph', 'utils', 'RunnableCallable'],'name': 'agent'}},
],
'edges':
[
{'source': '__start__', 'target': 'agent'},
{'source': 'agent','target': '__end__'}
]
}
""" # noqa: E501
return await self.http.get(f"/assistants/{assistant_id}/graph")
async def get_schemas(self, assistant_id: str) -> GraphSchema:
"""Get the schemas of an assistant by ID.
Args:
assistant_id: The ID of the assistant to get the schema of.
Returns:
GraphSchema: The graph schema for the assistant.
Example Usage:
schema = await client.assistants.get_schemas(
assistant_id="my_assistant_id"
)
print(schema)
----------------------------------------------------------------------------------------------------------------------------
{
'graph_id': 'agent',
'state_schema':
{
'title': 'LangGraphInput',
'$ref': '#/definitions/AgentState',
'definitions':
{
'BaseMessage':
{
'title': 'BaseMessage',
'description': 'Base abstract Message class. Messages are the inputs and outputs of ChatModels.',
'type': 'object',
'properties':
{
'content':
{
'title': 'Content',
'anyOf': [
{'type': 'string'},
{'type': 'array','items': {'anyOf': [{'type': 'string'}, {'type': 'object'}]}}
]
},
'additional_kwargs':
{
'title': 'Additional Kwargs',
'type': 'object'
},
'response_metadata':
{
'title': 'Response Metadata',
'type': 'object'
},
'type':
{
'title': 'Type',
'type': 'string'
},
'name':
{
'title': 'Name',
'type': 'string'
},
'id':
{
'title': 'Id',
'type': 'string'
}
},
'required': ['content', 'type']
},
'AgentState':
{
'title': 'AgentState',
'type': 'object',
'properties':
{
'messages':
{
'title': 'Messages',
'type': 'array',
'items': {'$ref': '#/definitions/BaseMessage'}
}
},
'required': ['messages']
}
}
},
'config_schema':
{
'title': 'Configurable',
'type': 'object',
'properties':
{
'model_name':
{
'title': 'Model Name',
'enum': ['anthropic', 'openai'],
'type': 'string'
}
}
}
}
""" # noqa: E501
return await self.http.get(f"/assistants/{assistant_id}/schemas")
async def create(
self,
graph_id: Optional[str],
config: Optional[Config] = None,
*,
metadata: Metadata = None,
assistant_id: Optional[str] = None,
if_exists: Optional[OnConflictBehavior] = None,
) -> Assistant:
"""Create a new assistant.
Useful when graph is configurable and you want to create different assistants based on different configurations.
Args:
graph_id: The ID of the graph the assistant should use. The graph ID is normally set in your langgraph.json configuration.
config: Configuration to use for the graph.
metadata: Metadata to add to assistant.
assistant_id: Assistant ID to use, will default to a random UUID if not provided.
if_exists: How to handle duplicate creation. Defaults to 'raise' under the hood.
Must be either 'raise' (raise error if duplicate), or 'do_nothing' (return existing assistant).
Returns:
Assistant: The created assistant.
Example Usage:
assistant = await client.assistants.create(
graph_id="agent",
config={"configurable": {"model_name": "openai"}},
metadata={"number":1},
assistant_id="my-assistant-id",
if_exists="do_nothing"
)
""" # noqa: E501
payload: Dict[str, Any] = {
"graph_id": graph_id,
}
if config:
payload["config"] = config
if metadata:
payload["metadata"] = metadata
if assistant_id:
payload["assistant_id"] = assistant_id
if if_exists:
payload["if_exists"] = if_exists
return await self.http.post("/assistants", json=payload)
async def update(
self,
assistant_id: str,
*,
graph_id: Optional[str] = None,
config: Optional[Config] = None,
metadata: Metadata = None,
) -> Assistant:
"""Update an assistant.
Use this to point to a different graph, update the configuration, or change the metadata of an assistant.
Args:
assistant_id: Assistant to update.
graph_id: The ID of the graph the assistant should use.
The graph ID is normally set in your langgraph.json configuration. If None, assistant will keep pointing to same graph.
config: Configuration to use for the graph.
metadata: Metadata to add to assistant.
Returns:
Assistant: The updated assistant.
Example Usage:
assistant = await client.assistants.update(
assistant_id='e280dad7-8618-443f-87f1-8e41841c180f',
graph_id="other-graph",
config={"configurable": {"model_name": "anthropic"}},
metadata={"number":2}
)
""" # noqa: E501
payload: Dict[str, Any] = {}
if graph_id:
payload["graph_id"] = graph_id
if config:
payload["config"] = config
if metadata:
payload["metadata"] = metadata
return await self.http.patch(
f"/assistants/{assistant_id}",
json=payload,
)
async def delete(
self,
assistant_id: str,
) -> None:
"""Delete an assistant.
Args:
assistant_id: The assistant ID to delete.
Returns:
None
Example Usage:
await client.assistants.delete(
assistant_id="my_assistant_id"
)
""" # noqa: E501
await self.http.delete(f"/assistants/{assistant_id}")
async def search(
self,
*,
metadata: Metadata = None,
graph_id: Optional[str] = None,
limit: int = 10,
offset: int = 0,
) -> list[Assistant]:
"""Search for assistants.
Args:
metadata: Metadata to filter by. Exact match filter for each KV pair.
graph_id: The ID of the graph to filter by.
The graph ID is normally set in your langgraph.json configuration.
limit: The maximum number of results to return.
offset: The number of results to skip.
Returns:
list[Assistant]: A list of assistants.
Example Usage:
assistants = await client.assistants.search(
metadata = {"name":"my_name"},
graph_id="my_graph_id",
limit=5,
offset=5
)
"""
payload: Dict[str, Any] = {
"limit": limit,
"offset": offset,
}
if metadata:
payload["metadata"] = metadata
if graph_id:
payload["graph_id"] = graph_id
return await self.http.post(
"/assistants/search",
json=payload,
)
class ThreadsClient:
def __init__(self, http: HttpClient) -> None:
self.http = http
async def get(self, thread_id: str) -> Thread:
"""Get a thread by ID.
Args:
thread_id: The ID of the thread to get.
Returns:
Thread: Thread object.
Example Usage:
thread = await client.threads.get(
thread_id="my_thread_id"
)
print(thread)
-----------------------------------------------------
{
'thread_id': 'my_thread_id',
'created_at': '2024-07-18T18:35:15.540834+00:00',
'updated_at': '2024-07-18T18:35:15.540834+00:00',
'metadata': {'graph_id': 'agent'}
}
""" # noqa: E501
return await self.http.get(f"/threads/{thread_id}")
async def create(
self,
*,
metadata: Metadata = None,
thread_id: Optional[str] = None,
if_exists: Optional[OnConflictBehavior] = None,
) -> Thread:
"""Create a new thread.
Args:
metadata: Metadata to add to thread.
thread_id: ID of thread.
If None, ID will be a randomly generated UUID.
if_exists: How to handle duplicate creation. Defaults to 'raise' under the hood.
Must be either 'raise' (raise error if duplicate), or 'do_nothing' (return existing thread).
Returns:
Thread: The created thread.
Example Usage:
thread = await client.threads.create(
metadata={"number":1},
thread_id="my-thread-id",
if_exists="raise"
)
""" # noqa: E501
payload: Dict[str, Any] = {}
if thread_id:
payload["thread_id"] = thread_id
if metadata:
payload["metadata"] = metadata
if if_exists:
payload["if_exists"] = if_exists
return await self.http.post("/threads", json=payload)
async def update(self, thread_id: str, *, metadata: dict[str, Any]) -> Thread:
"""Update a thread.
Args:
thread_id: ID of thread to update.
metadata: Metadata to add/update to thread.
Returns:
Thread: The created thread.
Example Usage:
thread = await client.threads.update(
thread_id="my-thread-id",
metadata={"number":1},
)
""" # noqa: E501
return await self.http.patch(
f"/threads/{thread_id}", json={"metadata": metadata}
)
async def delete(self, thread_id: str) -> None:
"""Delete a thread.
Args:
thread_id: The ID of the thread to delete.
Returns:
None
Example Usage:
await client.threads.delete(
thread_id="my_thread_id"
)
""" # noqa: E501
await self.http.delete(f"/threads/{thread_id}")
async def search(
self,
*,
metadata: Metadata = None,
status: Optional[ThreadStatus] = None,
limit: int = 10,
offset: int = 0,
) -> list[Thread]:
"""Search for threads.
Args:
metadata: Thread metadata to search for.
status: Status to search for.
Must be one of 'idle', 'busy', or 'interrupted'.
limit: Limit on number of threads to return.
offset: Offset in threads table to start search from.
Returns:
list[Thread]: List of the threads matching the search parameters.
Example Usage:
threads = await client.threads.search(
metadata={"number":1},
status="interrupted",
limit=15,
offset=5
)
""" # noqa: E501
payload: Dict[str, Any] = {
"limit": limit,
"offset": offset,
}
if metadata:
payload["metadata"] = metadata
if status:
payload["status"] = status
return await self.http.post(
"/threads/search",
json=payload,
)
async def copy(self, thread_id: str) -> None:
"""Copy a thread.
Args:
thread_id: The ID of the thread to copy.
Returns:
None
Example Usage:
await client.threads.copy(
thread_id="my_thread_id"
)
""" # noqa: E501
return await self.http.post(f"/threads/{thread_id}/copy", json=None)
async def get_state(
self, thread_id: str, checkpoint_id: Optional[str] = None
) -> ThreadState:
"""Get the state of a thread.
Args:
thread_id: The ID of the thread to get the state of.
checkpoint_id: The ID of the checkpoint to get the state of.
Returns:
ThreadState: the thread of the state.
Example Usage:
thread_state = await client.threads.get_state(
thread_id="my_thread_id",
checkpoint_id="my_checkpoint_id"
)
print(thread_state)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------
{
'values': {
'messages': [
{
'content': 'how are you?',
'additional_kwargs': {},
'response_metadata': {},
'type': 'human',
'name': None,
'id': 'fe0a5778-cfe9-42ee-b807-0adaa1873c10',
'example': False
},
{
'content': "I'm doing well, thanks for asking! I'm an AI assistant created by Anthropic to be helpful, honest, and harmless.",
'additional_kwargs': {},
'response_metadata': {},
'type': 'ai',
'name': None,
'id': 'run-159b782c-b679-4830-83c6-cef87798fe8b',
'example': False,
'tool_calls': [],
'invalid_tool_calls': [],
'usage_metadata': None
}
]
},
'next': [],
'config':
{
'configurable':
{
'thread_id': 'e2496803-ecd5-4e0c-a779-3226296181c2',
'checkpoint_ns': '',
'checkpoint_id': '1ef4a9b8-e6fb-67b1-8001-abd5184439d1'
}
},
'metadata':
{
'step': 1,
'run_id': '1ef4a9b8-d7da-679a-a45a-872054341df2',
'source': 'loop',
'writes':
{
'agent':
{
'messages': [
{
'id': 'run-159b782c-b679-4830-83c6-cef87798fe8b',
'name': None,
'type': 'ai',
'content': "I'm doing well, thanks for asking! I'm an AI assistant created by Anthropic to be helpful, honest, and harmless.",
'example': False,
'tool_calls': [],
'usage_metadata': None,
'additional_kwargs': {},
'response_metadata': {},
'invalid_tool_calls': []
}
]
}
},
'user_id': None,
'graph_id': 'agent',
'thread_id': 'e2496803-ecd5-4e0c-a779-3226296181c2',
'created_by': 'system',
'assistant_id': 'fe096781-5601-53d2-b2f6-0d3403f7e9ca'},
'created_at': '2024-07-25T15:35:44.184703+00:00',
'parent_config':
{
'configurable':
{
'thread_id': 'e2496803-ecd5-4e0c-a779-3226296181c2',
'checkpoint_ns': '',
'checkpoint_id': '1ef4a9b8-d80d-6fa7-8000-9300467fad0f'
}
}
}
""" # noqa: E501
if checkpoint_id:
return await self.http.get(f"/threads/{thread_id}/state/{checkpoint_id}")
else:
return await self.http.get(f"/threads/{thread_id}/state")
async def update_state(
self,
thread_id: str,
values: dict,
*,
as_node: Optional[str] = None,
checkpoint_id: Optional[str] = None,
) -> None:
"""Update the state of a thread.
Args:
thread_id: The ID of the thread to update.
values: The values to update to the state.
as_node: Update the state as if this node had just executed.
checkpoint_id: The ID of the checkpoint to get the state of.
Returns:
None
Example Usage:
await client.threads.get_state(
thread_id="my_thread_id",
values={"messages":[{"role": "user", "content": "hello!"}]},
as_node="my_node",
checkpoint_id="my_checkpoint_id"
)
""" # noqa: E501
payload: Dict[str, Any] = {
"values": values,
}
if checkpoint_id:
payload["checkpoint_id"] = checkpoint_id
if as_node:
payload["as_node"] = as_node
return await self.http.post(f"/threads/{thread_id}/state", json=payload)
async def patch_state(
self,
thread_id: Union[str, Config],
metadata: dict,
) -> None:
"""Patch the state of a thread.
Args:
thread_id: The ID of the thread to get the state of.
metadata: The metadata to assign to the state.
Returns:
None
Example Usage:
await client.threads.patch_state(
thread_id="my_thread_id",
metadata={"name":"new_name"},
)
""" # noqa: E501
if isinstance(thread_id, dict):
thread_id_: str = thread_id["configurable"]["thread_id"]
else:
thread_id_ = thread_id
return await self.http.patch(
f"/threads/{thread_id_}/state",
json={"metadata": metadata},
)
async def get_history(
self,
thread_id: str,
limit: int = 10,
before: Optional[str] = None,
metadata: Optional[dict] = None,
) -> list[ThreadState]:
"""Get the state history of a thread.
Args:
thread_id: The ID of the thread to get the state of.
limit: The maximum number of results to return.
before: Thread timestamp to get history before.
metadata: The metadata of the thread history to get.
Returns:
list[ThreadState]: the state history of the thread.
Example Usage:
thread_state = await client.threads.get_history(
thread_id="my_thread_id",
limit=5,
before="my_timestamp",
metadata={"name":"my_name"}
)
""" # noqa: E501
payload: Dict[str, Any] = {
"limit": limit,
}
if before:
payload["before"] = before
if metadata:
payload["metadata"] = metadata
return await self.http.post(f"/threads/{thread_id}/history", json=payload)
class RunsClient:
def __init__(self, http: HttpClient) -> None:
self.http = http
@overload
def stream(
self,
thread_id: str,
assistant_id: str,
*,
input: Optional[dict] = None,
stream_mode: Union[StreamMode, list[StreamMode]] = "values",
metadata: Optional[dict] = None,
config: Optional[Config] = None,
checkpoint_id: Optional[str] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
feedback_keys: Optional[list[str]] = None,
multitask_strategy: Optional[MultitaskStrategy] = None,
) -> AsyncIterator[StreamPart]:
...
@overload
def stream(
self,
thread_id: None,
assistant_id: str,
*,
input: Optional[dict] = None,
stream_mode: Union[StreamMode, list[StreamMode]] = "values",
metadata: Optional[dict] = None,
config: Optional[Config] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
feedback_keys: Optional[list[str]] = None,
) -> AsyncIterator[StreamPart]:
...
def stream(
self,
thread_id: Optional[str],
assistant_id: str,
*,
input: Optional[dict] = None,
stream_mode: Union[StreamMode, list[StreamMode]] = "values",
metadata: Optional[dict] = None,
config: Optional[Config] = None,
checkpoint_id: Optional[str] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
feedback_keys: Optional[list[str]] = None,
webhook: Optional[str] = None,
multitask_strategy: Optional[MultitaskStrategy] = None,
) -> AsyncIterator[StreamPart]:
"""Create a run and stream the results.
Args:
thread_id: the thread ID to assign to the thread.
If None will create a stateless run.
assistant_id: The assistant ID or graph name to stream from.
If using graph name, will default to first assistant created from that graph.
input: The input to the graph.
stream_mode: The stream mode(s) to use.
metadata: Metadata to assign to the run.
config: The configuration for the assistant.
checkpoint_id: The checkpoint to start streaming from.
interrupt_before: Nodes to interrupt immediately before they get executed.
interrupt_after: Nodes to Nodes to interrupt immediately after they get executed.
feedback_keys: Feedback keys to assign to run.
webhook: Webhook to call after LangGraph API call is done.
multitask_strategy: Multitask strategy to use.
Must be one of 'reject', 'interrupt', 'rollback', or 'enqueue'.
Returns:
AsyncIterator[StreamPart]: Asynchronous iterator of stream results.
Example Usage:
async for chunk in client.runs.stream(
thread_id=None,
assistant_id="agent",
input={"messages": [{"role": "user", "content": "how are you?"}]},
stream_mode=["values","debug"],
metadata={"name":"my_run"},
config={"configurable": {"model_name": "anthropic"}},
checkpoint_id="my_checkpoint",
interrupt_before=["node_to_stop_before_1","node_to_stop_before_2"],
interrupt_after=["node_to_stop_after_1","node_to_stop_after_2"],
feedback_keys=["my_feedback_key_1","my_feedback_key_2"],
webhook="https://my.fake.webhook.com",
multitask_strategy="interrupt"
):
print(chunk)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
StreamPart(event='metadata', data={'run_id': '1ef4a9b8-d7da-679a-a45a-872054341df2'})
StreamPart(event='values', data={'messages': [{'content': 'how are you?', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': 'fe0a5778-cfe9-42ee-b807-0adaa1873c10', 'example': False}]})
StreamPart(event='values', data={'messages': [{'content': 'how are you?', 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'human', 'name': None, 'id': 'fe0a5778-cfe9-42ee-b807-0adaa1873c10', 'example': False}, {'content': "I'm doing well, thanks for asking! I'm an AI assistant created by Anthropic to be helpful, honest, and harmless.", 'additional_kwargs': {}, 'response_metadata': {}, 'type': 'ai', 'name': None, 'id': 'run-159b782c-b679-4830-83c6-cef87798fe8b', 'example': False, 'tool_calls': [], 'invalid_tool_calls': [], 'usage_metadata': None}]})
StreamPart(event='end', data=None)
""" # noqa: E501
payload = {
"input": input,
"config": config,
"metadata": metadata,
"stream_mode": stream_mode,
"assistant_id": assistant_id,
"interrupt_before": interrupt_before,
"interrupt_after": interrupt_after,
"feedback_keys": feedback_keys,
"webhook": webhook,
"checkpoint_id": checkpoint_id,
"multitask_strategy": multitask_strategy,
}
endpoint = (
f"/threads/{thread_id}/runs/stream"
if thread_id is not None
else "/runs/stream"
)
return self.http.stream(
endpoint, "POST", json={k: v for k, v in payload.items() if v is not None}
)
@overload
async def create(
self,
thread_id: None,
assistant_id: str,
*,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
webhook: Optional[str] = None,
) -> Run:
...
@overload
async def create(
self,
thread_id: str,
assistant_id: str,
*,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
checkpoint_id: Optional[str] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
webhook: Optional[str] = None,
multitask_strategy: Optional[MultitaskStrategy] = None,
) -> Run:
...
async def create(
self,
thread_id: Optional[str],
assistant_id: str,
*,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
checkpoint_id: Optional[str] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
webhook: Optional[str] = None,
multitask_strategy: Optional[MultitaskStrategy] = None,
) -> Run:
"""Create a background run.
Args:
thread_id: the thread ID to assign to the thread.
If None will create a stateless run.
assistant_id: The assistant ID or graph name to stream from.
If using graph name, will default to first assistant created from that graph.
input: The input to the graph.
metadata: Metadata to assign to the run.
config: The configuration for the assistant.
checkpoint_id: The checkpoint to start streaming from.
interrupt_before: Nodes to interrupt immediately before they get executed.
interrupt_after: Nodes to Nodes to interrupt immediately after they get executed.
webhook: Webhook to call after LangGraph API call is done.
multitask_strategy: Multitask strategy to use.
Must be one of 'reject', 'interrupt', 'rollback', or 'enqueue'.
Returns:
Run: The created background run.
Example Usage:
background_run = await client.runs.create(
thread_id="my_thread_id",
assistant_id="my_assistant_id",
input={"messages": [{"role": "user", "content": "hello!"}]},
metadata={"name":"my_run"},
config={"configurable": {"model_name": "openai"}},
checkpoint_id="my_checkpoint",
interrupt_before=["node_to_stop_before_1","node_to_stop_before_2"],
interrupt_after=["node_to_stop_after_1","node_to_stop_after_2"],
webhook="https://my.fake.webhook.com",
multitask_strategy="interrupt"
)
print(background_run)
--------------------------------------------------------------------------------
{
'run_id': 'my_run_id',
'thread_id': 'my_thread_id',
'assistant_id': 'my_assistant_id',
'created_at': '2024-07-25T15:35:42.598503+00:00',
'updated_at': '2024-07-25T15:35:42.598503+00:00',
'metadata': {},
'status': 'pending',
'kwargs':
{
'input':
{
'messages': [
{
'role': 'user',
'content': 'how are you?'
}
]
},
'config':
{
'metadata':
{
'created_by': 'system'
},
'configurable':
{
'run_id': 'my_run_id',
'user_id': None,
'graph_id': 'agent',
'thread_id': 'my_thread_id',
'checkpoint_id': None,
'model_name': "openai",
'assistant_id': 'my_assistant_id'
}
},
'webhook': "https://my.fake.webhook.com",
'temporary': False,
'stream_mode': ['values'],
'feedback_keys': None,
'interrupt_after': ["node_to_stop_after_1","node_to_stop_after_2"],
'interrupt_before': ["node_to_stop_before_1","node_to_stop_before_2"]
},
'multitask_strategy': 'interrupt'
}
""" # noqa: E501
payload = {
"input": input,
"config": config,
"metadata": metadata,
"assistant_id": assistant_id,
"interrupt_before": interrupt_before,
"interrupt_after": interrupt_after,
"webhook": webhook,
"checkpoint_id": checkpoint_id,
"multitask_strategy": multitask_strategy,
}
payload = {k: v for k, v in payload.items() if v is not None}
if thread_id:
return await self.http.post(f"/threads/{thread_id}/runs", json=payload)
else:
return await self.http.post("/runs", json=payload)
async def create_batch(self, payloads: list[RunCreate]) -> list[Run]:
"""Create a batch of background runs."""
def filter_payload(payload: RunCreate):
return {k: v for k, v in payload.items() if v is not None}
payloads = [filter_payload(payload) for payload in payloads]
return await self.http.post("/runs/batch", json=payloads)
@overload
async def wait(
self,
thread_id: str,
assistant_id: str,
*,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
checkpoint_id: Optional[str] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
multitask_strategy: Optional[MultitaskStrategy] = None,
) -> Union[list[dict], dict[str, Any]]:
...
@overload
async def wait(
self,
thread_id: None,
assistant_id: str,
*,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
) -> Union[list[dict], dict[str, Any]]:
...
async def wait(
self,
thread_id: Optional[str],
assistant_id: str,
*,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
checkpoint_id: Optional[str] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
webhook: Optional[str] = None,
multitask_strategy: Optional[MultitaskStrategy] = None,
) -> Union[list[dict], dict[str, Any]]:
"""Create a run, wait until it finishes and return the final state.
Args:
thread_id: the thread ID to create the run on.
If None will create a stateless run.
assistant_id: The assistant ID or graph name to run.
If using graph name, will default to first assistant created from that graph.
input: The input to the graph.
metadata: Metadata to assign to the run.
config: The configuration for the assistant.
checkpoint_id: The checkpoint to start streaming from.
interrupt_before: Nodes to interrupt immediately before they get executed.
interrupt_after: Nodes to Nodes to interrupt immediately after they get executed.
webhook: Webhook to call after LangGraph API call is done.
multitask_strategy: Multitask strategy to use.
Must be one of 'reject', 'interrupt', 'rollback', or 'enqueue'.
Returns:
Union[list[dict], dict[str, Any]]: The output of the run.
Example Usage:
final_state_of_run = await client.runs.wait(
thread_id=None,
assistant_id="agent",
input={"messages": [{"role": "user", "content": "how are you?"}]},
metadata={"name":"my_run"},
config={"configurable": {"model_name": "anthropic"}},
checkpoint_id="my_checkpoint",
interrupt_before=["node_to_stop_before_1","node_to_stop_before_2"],
interrupt_after=["node_to_stop_after_1","node_to_stop_after_2"],
webhook="https://my.fake.webhook.com",
multitask_strategy="interrupt"
)
print(final_state_of_run)
-------------------------------------------------------------------------------------------------------------------------------------------
{
'messages': [
{
'content': 'how are you?',
'additional_kwargs': {},
'response_metadata': {},
'type': 'human',
'name': None,
'id': 'f51a862c-62fe-4866-863b-b0863e8ad78a',
'example': False
},
{
'content': "I'm doing well, thanks for asking! I'm an AI assistant created by Anthropic to be helpful, honest, and harmless.",
'additional_kwargs': {},
'response_metadata': {},
'type': 'ai',
'name': None,
'id': 'run-bf1cd3c6-768f-4c16-b62d-ba6f17ad8b36',
'example': False,
'tool_calls': [],
'invalid_tool_calls': [],
'usage_metadata': None
}
]
}
""" # noqa: E501
payload = {
"input": input,
"config": config,
"metadata": metadata,
"assistant_id": assistant_id,
"interrupt_before": interrupt_before,
"interrupt_after": interrupt_after,
"webhook": webhook,
"checkpoint_id": checkpoint_id,
"multitask_strategy": multitask_strategy,
}
endpoint = (
f"/threads/{thread_id}/runs/wait" if thread_id is not None else "/runs/wait"
)
return await self.http.post(
endpoint, json={k: v for k, v in payload.items() if v is not None}
)
async def list(
self, thread_id: str, *, limit: int = 10, offset: int = 0
) -> List[Run]:
"""List runs.
Args:
thread_id: The thread ID to list runs for.
limit: The maximum number of results to return.
offset: The number of results to skip.
Returns:
List[Run]: The runs for the thread.
Example Usage:
await client.runs.delete(
thread_id="thread_id_to_delete",
limit=5,
offset=5,
)
""" # noqa: E501
return await self.http.get(
f"/threads/{thread_id}/runs?limit={limit}&offset={offset}"
)
async def get(self, thread_id: str, run_id: str) -> Run:
"""Get a run.
Args:
thread_id: The thread ID to get.
run_id: The run ID to get.
Returns:
Run: Run object.
Example Usage:
run = await client.runs.get(
thread_id="thread_id_to_delete",
run_id="run_id_to_delete",
)
""" # noqa: E501
return await self.http.get(f"/threads/{thread_id}/runs/{run_id}")
async def cancel(self, thread_id: str, run_id: str, *, wait: bool = False) -> None:
"""Get a run.
Args:
thread_id: The thread ID to cancel.
run_id: The run ID to cancek.
wait: Whether to wait until run has completed.
Returns:
None
Example Usage:
await client.runs.cancel(
thread_id="thread_id_to_cancel",
run_id="run_id_to_cancel",
wait=True
)
""" # noqa: E501
return await self.http.post(
f"/threads/{thread_id}/runs/{run_id}/cancel?wait={1 if wait else 0}",
json=None,
)
async def join(self, thread_id: str, run_id: str) -> None:
"""Block until a run is done.
Args:
thread_id: The thread ID to join.
run_id: The run ID to join.
Returns:
None
Example Usage:
await client.runs.join(
thread_id="thread_id_to_join",
run_id="run_id_to_join"
)
""" # noqa: E501
return await self.http.get(f"/threads/{thread_id}/runs/{run_id}/join")
async def delete(self, thread_id: str, run_id: str) -> None:
"""Delete a run.
Args:
thread_id: The thread ID to delete.
run_id: The run ID to delete.
Returns:
None
Example Usage:
await client.runs.delete(
thread_id="thread_id_to_delete",
run_id="run_id_to_delete"
)
""" # noqa: E501
await self.http.delete(f"/threads/{thread_id}/runs/{run_id}")
class CronClient:
def __init__(self, http_client: HttpClient) -> None:
self.http = http_client
async def create_for_thread(
self,
thread_id: str,
assistant_id: str,
*,
schedule: str,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
webhook: Optional[str] = None,
multitask_strategy: Optional[str] = None,
) -> Run:
"""Create a cron job for a thread.
Args:
thread_id: the thread ID to run the cron job on.
assistant_id: The assistant ID or graph name to use for the cron job.
If using graph name, will default to first assistant created from that graph.
schedule: The cron schedule to execute this job on.
input: The input to the graph.
metadata: Metadata to assign to the cron job runs.
config: The configuration for the assistant.
interrupt_before: Nodes to interrupt immediately before they get executed.
interrupt_after: Nodes to Nodes to interrupt immediately after they get executed.
webhook: Webhook to call after LangGraph API call is done.
multitask_strategy: Multitask strategy to use.
Must be one of 'reject', 'interrupt', 'rollback', or 'enqueue'.
Returns:
Run: The cron run.
Example Usage:
cron_run = await client.crons.create_for_thread(
thread_id="my-thread-id",
assistant_id="agent",
schedule="27 15 * * *",
input={"messages": [{"role": "user", "content": "hello!"}]},
metadata={"name":"my_run"},
config={"configurable": {"model_name": "openai"}},
interrupt_before=["node_to_stop_before_1","node_to_stop_before_2"],
interrupt_after=["node_to_stop_after_1","node_to_stop_after_2"],
webhook="https://my.fake.webhook.com",
multitask_strategy="interrupt"
)
""" # noqa: E501
payload = {
"schedule": schedule,
"input": input,
"config": config,
"metadata": metadata,
"assistant_id": assistant_id,
"interrupt_before": interrupt_before,
"interrupt_after": interrupt_after,
"webhook": webhook,
}
if multitask_strategy:
payload["multitask_strategy"] = multitask_strategy
payload = {k: v for k, v in payload.items() if v is not None}
return await self.http.post(f"/threads/{thread_id}/runs/crons", json=payload)
async def create(
self,
assistant_id: str,
*,
schedule: str,
input: Optional[dict] = None,
metadata: Optional[dict] = None,
config: Optional[Config] = None,
interrupt_before: Optional[list[str]] = None,
interrupt_after: Optional[list[str]] = None,
webhook: Optional[str] = None,
multitask_strategy: Optional[str] = None,
) -> Run:
"""Create a cron run.
Args:
assistant_id: The assistant ID or graph name to use for the cron job.
If using graph name, will default to first assistant created from that graph.
schedule: The cron schedule to execute this job on.
input: The input to the graph.
metadata: Metadata to assign to the cron job runs.
config: The configuration for the assistant.
interrupt_before: Nodes to interrupt immediately before they get executed.
interrupt_after: Nodes to Nodes to interrupt immediately after they get executed.
webhook: Webhook to call after LangGraph API call is done.
multitask_strategy: Multitask strategy to use.
Must be one of 'reject', 'interrupt', 'rollback', or 'enqueue'.
Returns:
Run: The cron run.
Example Usage:
cron_run = await client.crons.create(
assistant_id="agent",
schedule="27 15 * * *",
input={"messages": [{"role": "user", "content": "hello!"}]},
metadata={"name":"my_run"},
config={"configurable": {"model_name": "openai"}},
interrupt_before=["node_to_stop_before_1","node_to_stop_before_2"],
interrupt_after=["node_to_stop_after_1","node_to_stop_after_2"],
webhook="https://my.fake.webhook.com",
multitask_strategy="interrupt"
)
""" # noqa: E501
payload = {
"schedule": schedule,
"input": input,
"config": config,
"metadata": metadata,
"assistant_id": assistant_id,
"interrupt_before": interrupt_before,
"interrupt_after": interrupt_after,
"webhook": webhook,
}
if multitask_strategy:
payload["multitask_strategy"] = multitask_strategy
payload = {k: v for k, v in payload.items() if v is not None}
return await self.http.post("/runs/crons", json=payload)
async def delete(self, cron_id: str) -> None:
"""Delete a cron.
Args:
cron_id: The cron ID to delete.
Returns:
None
Example Usage:
await client.crons.delete(
cron_id="cron_to_delete"
)
""" # noqa: E501
await self.http.delete(f"/runs/crons/{cron_id}")
async def search(
self,
*,
assistant_id: Optional[str] = None,
thread_id: Optional[str] = None,
limit: int = 10,
offset: int = 0,
) -> list[Cron]:
"""Get a list of cron jobs.
Args:
assistant_id: The assistant ID or graph name to search for.
thread_id: the thread ID to search for.
limit: The maximum number of results to return.
offset: The number of results to skip.
Returns:
list[Cron]: The list of cron jobs returned by the search,
Example Usage:
cron_jobs = await client.crons.search(
assistant_id="my_assistant_id",
thread_id="my_thread_id",
limit=5,
offset=5,
)
print(cron_jobs)
----------------------------------------------------------
[
{
'cron_id': '1ef3cefa-4c09-6926-96d0-3dc97fd5e39b',
'assistant_id': 'my_assistant_id',
'thread_id': 'my_thread_id',
'user_id': None,
'payload':
{
'input': {'start_time': ''},
'schedule': '4 * * * *',
'assistant_id': 'my_assistant_id'
},
'schedule': '4 * * * *',
'next_run_date': '2024-07-25T17:04:00+00:00',
'end_time': None,
'created_at': '2024-07-08T06:02:23.073257+00:00',
'updated_at': '2024-07-08T06:02:23.073257+00:00'
}
]
""" # noqa: E501
payload = {
"assistant_id": assistant_id,
"thread_id": thread_id,
"limit": limit,
"offset": offset,
}
payload = {k: v for k, v in payload.items() if v is not None}
return await self.http.post("/runs/crons/search", json=payload)
def _get_api_key(api_key: Optional[str] = None) -> Optional[str]:
"""Get the API key from the environment.
Precedence:
1. explicit argument
2. LANGGRAPH_API_KEY
3. LANGSMITH_API_KEY
4. LANGCHAIN_API_KEY
"""
if api_key:
return api_key
for prefix in ["LANGGRAPH", "LANGSMITH", "LANGCHAIN"]:
if env := os.getenv(f"{prefix}_API_KEY"):
return env.strip().strip('"').strip("'")
return None # type: ignore