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How to install Agent in Codex

To install Agent in Codex, run "codex mcp add agent -- npx -y @1mcp/agent" in your terminal, then type /mcp in Codex to check it.

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  1. 1

    Run the install command

    In a terminal, run:

    codex mcp add agent -- npx -y @1mcp/agent
  2. 2

    Check it

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

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

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Questions

Does Agent work in Codex?

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

Agent 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 Agent safe?

It scores 85 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.