Files
langgraph/libs/sdk-py
9babffa054 feat(sdk-py): add stream_mode, stream_subgraphs, stream_resumable, durability to crons (#6876)
## Summary
- Adds `stream_mode`, `stream_subgraphs`, `stream_resumable`, and
`durability` parameters to cron `create`, `create_for_thread`, and
`update` methods in both async and sync clients
- Adds corresponding fields to the `CronUpdate` TypedDict in `schema.py`
- Adds `checkpoint_during` deprecation warnings to cron create methods
(consistent with the runs client pattern)

These fields were added to the OpenAPI spec in langgraph-api but were
not yet reflected in the Python SDK.

## Test plan
- [x] `make format` passes
- [x] `make lint` passes
- [x] `make test` passes (69/69, including sync/async API parity test)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-19 11:10:07 -08:00
..
2026-02-17 10:30:58 -08:00
2026-02-19 13:12:01 -05:00

LangGraph Python SDK

This repository contains the Python SDK for interacting with the LangSmith Deployment REST API.

Quick Start

To get started with the Python SDK, install the package

pip install -U langgraph-sdk

You will need a running LangGraph API server. If you're running a server locally using langgraph-cli, SDK will automatically point at http://localhost:8123, otherwise you would need to specify the server URL when creating a client.

from langgraph_sdk import get_client

# If you're using a remote server, initialize the client with `get_client(url=REMOTE_URL)`
client = get_client()

# List all assistants
assistants = await client.assistants.search()

# We auto-create an assistant for each graph you register in config.
agent = assistants[0]

# Start a new thread
thread = await client.threads.create()

# Start a streaming run
input = {"messages": [{"role": "human", "content": "what's the weather in la"}]}
async for chunk in client.runs.stream(thread['thread_id'], agent['assistant_id'], input=input):
    print(chunk)