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How to install Unity Open MCP in Codex

To install Unity Open MCP in Codex, run "codex mcp add unity-open-mcp -- npx -y unity-open-mcp" in your terminal, then type /mcp in Codex to check it.

Built from the published package · server updated 11 days ago

  1. 1

    Run the install command

    In a terminal, run:

    codex mcp add unity-open-mcp -- npx -y unity-open-mcp
  2. 2

    Check it

    Inside Codex, type /mcp to see the server and its tools.

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

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Questions

Does Unity Open MCP work in Codex?

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

Unity Open MCP 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 Unity Open 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.