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Documentation Index

Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-opensw-1778585076-c74a3b1.mintlify.app/llms.txt

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Comprehensive API reference documentation for the LangChain and LangGraph Python and TypeScript libraries.

Reference sites

https://mintcdn.com/langchain-5e9cc07a-preview-opensw-1778585076-c74a3b1/EYHoGc-bFK4s7R9S/images/brand/langchain-icon.png?fit=max&auto=format&n=EYHoGc-bFK4s7R9S&q=85&s=dca8aca4a76a34661f47ce7f1a2816e5

LangChain

Complete API reference for LangChain JavaScript/TypeScript, including chat models, tools, agents, and more.
https://mintcdn.com/langchain-5e9cc07a-preview-opensw-1778585076-c74a3b1/EYHoGc-bFK4s7R9S/images/brand/langgraph-icon.png?fit=max&auto=format&n=EYHoGc-bFK4s7R9S&q=85&s=97401c55bf290f2f4f387342576f3ae5

LangGraph

Complete API reference for LangGraph JavaScript/TypeScript, including graph APIs, state management, checkpointing, and more.
https://mintcdn.com/langchain-5e9cc07a-preview-opensw-1778585076-c74a3b1/EYHoGc-bFK4s7R9S/images/brand/deep-agents-icon.png?fit=max&auto=format&n=EYHoGc-bFK4s7R9S&q=85&s=3cf59b4708a90d1077b7143ac8a10cfa

Deep Agents

Build agents that can plan, use subagents, and leverage file systems for complex tasks

LangChain Integrations

LangChain packages to connect with popular LLM providers, vector stores, tools, and other services.

MCP Adapter

Use Model Context Protocol (MCP) tools within LangChain and LangGraph applications.
https://mintcdn.com/langchain-5e9cc07a-preview-opensw-1778585076-c74a3b1/EYHoGc-bFK4s7R9S/images/brand/deep-agents-icon.png?fit=max&auto=format&n=EYHoGc-bFK4s7R9S&q=85&s=3cf59b4708a90d1077b7143ac8a10cfa

Deep Agents

Build agents that can plan, use subagents, and leverage file systems for complex tasks.