How to install MCP Servers in Codex

To install MCP Servers in Codex, run "codex mcp add mcp-servers -- npx -y @babylonjs/mcp-servers" 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 mcp-servers -- npx -y @babylonjs/mcp-servers

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

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

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Questions

Does MCP Servers work in Codex?

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

MCP Servers 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 MCP Servers safe?

It scores 94 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.