langchain mcp for Gemini CLI

io.github.baixianger/langchain-mcp

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

client:Gemini CLI transport:stdio runtime:npm

Install langchain mcp in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

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

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs