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.