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

Built from the published package · server updated 16 months ago

Run the install command

In a terminal, run:

gemini mcp add unreal-mcp npx -y @runreal/unreal-mcp

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

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

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Questions

Does Unreal MCP work in Gemini CLI?

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

Unreal 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 Unreal MCP safe?

It scores 51 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.