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How to install Caveman Shrink 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 Caveman Shrink by running "gemini mcp add caveman-shrink npx -y caveman-shrink", then type /mcp to check it.

Built from the published package · server updated yesterday

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add caveman-shrink npx -y caveman-shrink
  2. 2

    Check it

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

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

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Questions

Does Caveman Shrink work in Gemini CLI?

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

Caveman Shrink 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 Caveman Shrink safe?

It scores 94 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.