Langchain MCP Server: Install & Setup

Install Langchain in Claude Code

Claude Code

claude mcp add langchain -- npx -y langchain-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "langchain": {
      "command": "npx",
      "args": [
        "-y",
        "langchain-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Langchain MCP server do?

LangChain/LangGraph/DeepAgents knowledge + LangGraph agent debugging (Polly-like)

Is the Langchain MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Langchain run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Langchain to Claude Code?

Run: claude mcp add langchain -- npx -y langchain-mcp

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