Files
langgraph/libs/sdk-py
efe78447b3 feat(sdk-py): emit id as part of stream events (#6581)
- **Description:** Provide the id of the event for routes that use SSE
streams. This will allow for more custom retry logic when streams
disconnect if needed.
  - **Issue:** N/A
  - **Dependencies:** N/A
  - **Twitter handle:** N/A

---------

Co-authored-by: William FH <13333726+hinthornw@users.noreply.github.com>
2025-12-12 17:16:48 -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)