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How to install build123d 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 build123d MCP by running "gemini mcp add build123d-mcp uvx build123d-mcp", then type /mcp to check it.

Built from the published package · server updated 7 days ago

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add build123d-mcp uvx build123d-mcp
  2. 2

    Check it

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

MCP servers run with your permissions. If build123d MCP needs an API key, add it under env in the config. Check its README.

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Questions

Does build123d MCP work in Gemini CLI?

Yes. Gemini CLI supports local and remote mcp servers, extensions (legacy), and build123d MCP installs with the steps above.

build123d MCP does not show up in Gemini CLI. What now?

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

Is build123d MCP safe?

It scores 79 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.