LangGraph SDK

LangSmith provides both a Python SDK for interacting with Agent Server.

Python SDK reference For detailed information about the Python SDK, see Python SDK reference docs.

Installation

You can install the packages using the appropriate package manager for your language:

Python

pip install langgraph-sdk

JS

yarn add @langchain/langgraph-sdk

Python sync vs. async

The Python SDK provides both synchronous (get_sync_client) and asynchronous (get_client) clients for interacting with Agent Server:

Sync

from langgraph_sdk import get_sync_client

client = get_sync_client(url=..., api_key=...)
client.assistants.search()

Async

from langgraph_sdk import get_client

client = get_client(url=..., api_key=...)
await client.assistants.search()

Learn more

• Python SDK Reference
• LangGraph CLI API Reference
• JS/TS SDK Reference

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