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Langchain Mcp

baixianger/langchain-mcp

This server gives Claude semantic search across the entire LangChain ecosystem through four tools: search_docs for documentation and tutorials, plus search_langchain_code, search_langgraph_code, and search_deepagents_code for finding implementation examples in Python and JavaScript repositories. It's powered by ChromaDB and OpenRouter embeddings, requiring Google OAuth to access the hosted API with usage credits. Reach for this when you're building with LangChain and need to quickly surface relevant code patterns or API references without context switching to docs. The project also includes self-hosting instructions if you want to run your own embedding pipeline locally, ingesting from the official repos and serving through your own API endpoint.

GitHub stars
5
tools
4
transport
STDIO
last updated
Jan 8, 2026
View on GitHub

Tools

4 tools

Public tool metadata for what this MCP can expose to an agent.

search_docsSearch documentation, references, and tutorials

Search documentation, references, and tutorials

No parameter schema in public metadata yet.

search_langchain_codeSearch LangChain source code

Search LangChain source code

No parameter schema in public metadata yet.

search_langgraph_codeSearch LangGraph source code

Search LangGraph source code

No parameter schema in public metadata yet.

search_deepagents_codeSearch DeepAgents source code

Search DeepAgents source code

No parameter schema in public metadata yet.

Sponsors

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Readme

LangChain MCP

Give your AI assistant complete knowledge of LangChain, LangGraph & LangSmith

Website npm version License: MIT

Website • Installation • Features • Documentation

Overview

LangChain MCP is a Model Context Protocol (MCP) server that provides semantic search across the entire LangChain ecosystem. Build AI applications faster with instant access to documentation and source code for LangChain, LangGraph, LangSmith, and DeepAgents.

LangChain MCP Homepage

Features

View the full README on GitHub

Details

Repository
github.com/baixianger/langchain-mcp
Categories
AI & LLM Tools, Documents & Knowledge
Package
langchain-mcp
Transport
STDIO
Registry
MCP registry, active

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