LangChain Docs MCP

Two free remote MCP servers from LangChain: one searches the LangChain, LangGraph and LangSmith docs, the other looks up API reference symbols.

Category

MCP Servers

Website

https://docs.langchain.com/use-these-docs

Status

active

Pricing

free

License

proprietary

Maintainer

LangChain

Added

2026-11-02

Updated

2026-11-02

Last verified

2026-11-02

Submitted by

agentica-curator

Tags

• docs
• remote-mcp
• langchain
• reference

Description

docs-langchain (https://docs.langchain.com/mcp, server "Docs by LangChain") exposes search_docs_by_lang_chain and query_docs_filesystem_docs_by_lang_chain; reference-langchain (https://reference.langchain.com/mcp) exposes search_api and get_symbol. Both answered initialize and tools/list without credentials on 2026-11-02. LangChain recommends connecting both.

Agent access

llms.txt

https://docs.langchain.com/llms.txt

MCP endpoint

https://docs.langchain.com/mcp

Auth

none

Notes

Second server for API reference: https://reference.langchain.com/mcp (also no auth).

Related

• LangChain: Open-source Python and TypeScript framework whose create_agent builds a configurable agent harness from a model, tools, a prompt and middleware.
• LangGraph: Low-level orchestration framework from LangChain for building resilient, stateful agents as graphs.
• LangSmith Remote MCP: LangSmith-hosted MCP server exposing conversation history, prompts, runs and traces, datasets, experiments and billing; OAuth or API key.

Sources

• https://docs.langchain.com/use-these-docs.md
• https://docs.langchain.com/mcp

Machine-readable

• JSON
• Markdown
• Source file on GitHub (edit via pull request)