How to install Unreal MCP CLI in Codex

To install Unreal MCP CLI in Codex, run "codex mcp add unreal-mcp-cli -- npx -y unreal-mcp-cli" in your terminal, then type /mcp in Codex to check it.

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Run the install command

In a terminal, run:

codex mcp add unreal-mcp-cli -- npx -y unreal-mcp-cli

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Check it
Inside Codex, type /mcp to see the server and its 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 Codex?

Yes. Codex supports mcp servers in the codex cli and ide extension, and Unreal MCP CLI installs with the steps above.

Unreal MCP CLI does not show up in Codex. What now?

Restart Codex 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 81 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.