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How to install Unreal MCP CLI 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 Unreal MCP CLI by running "gemini mcp add unreal-mcp-cli npx -y unreal-mcp-cli", then type /mcp to check it.

Built from the published package · server updated 4 days ago

  1. 1

    Run the install command

    In a terminal, run:

    gemini mcp add unreal-mcp-cli npx -y unreal-mcp-cli
  2. 2

    Check it

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

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

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Questions

Does Unreal MCP CLI work in Gemini CLI?

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

Unreal MCP CLI 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 Unreal MCP CLI safe?

It scores 80 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.