How to install Extensions MCP 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 Extensions MCP by running "gemini mcp add extensions-mcp npx -y @netlify/extensions-mcp", then type /mcp to check it.

Built from the published package · server updated 17 months ago

Run the install command

In a terminal, run:

gemini mcp add extensions-mcp npx -y @netlify/extensions-mcp

2
Check it
Inside Gemini CLI, type /mcp to list servers and tools.

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

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Questions

Does Extensions MCP work in Gemini CLI?

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

Extensions MCP 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 Extensions MCP safe?

It scores 21 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.