mcpdoc (LangChain)

LangChain MCP server that consumes llms.txt files: you give it the llms.txt URLs of the libraries you use and your agent can read that documentation on the spot, instead of hallucinating outdated APIs. It is the consumer side of the llms.txt standard (the standard's repo defines the format; this one puts it to use). A lightweight alternative to Context7 when the library already publishes its llms.txt. Indexed and credited to langchain-ai; it lives in the original repo.