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How to install Langchain MCP Adapters in Gemini CLI

Gemini CLI was replaced by Antigravity CLI in June 2026. On an enterprise licence or paid API key you can still install Langchain MCP Adapters by running "gemini mcp add langchain-mcp-adapters npx -y langchain-mcp-adapters", then type /mcp to check it.

Built from the published package · server updated 2 days ago

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add langchain-mcp-adapters npx -y langchain-mcp-adapters
  2. 2

    Check it

    Inside Gemini CLI, type /mcp to list servers and tools.

MCP servers run with your permissions. If Langchain MCP Adapters needs an API key, add it under env in the config. Check its README.

Install Langchain MCP Adapters in another app

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Questions

Does Langchain MCP Adapters work in Gemini CLI?

Yes. Gemini CLI supports local and remote mcp servers, extensions (legacy), and Langchain MCP Adapters installs with the steps above.

Langchain MCP Adapters does not show up in Gemini CLI. What now?

Restart Gemini CLI fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Langchain MCP Adapters safe?

It scores 91 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.