Install P4plan in Codex

What you need first

• Codex, installed.
• Node.js, which gives the npx command the server starts with.
• Your own value for YOUR_P4PLAN_API_AUTH_TOKEN.

Steps

1. Run this in a terminal. It writes the server into ~/.codex/config.toml, which the Codex CLI, its IDE extension and the ChatGPT desktop app share.

codex mcp add p4plan-mcp --env P4PLAN_API_AUTH_TOKEN=YOUR_P4PLAN_API_AUTH_TOKEN -- npx -y @perforce/[email protected]

2. Replace YOUR_P4PLAN_API_AUTH_TOKEN with your own value.
3. Start Codex again and type /mcp: the server is listed.

Check it worked

Ask Codex: List the tools of p4plan-mcp.

If it does not start

spawn npx ENOENT

Node.js is not on the PATH that Codex sees. Install it, or write the full path of npx in the config.

The server starts, but its tools fail

A YOUR_… placeholder is still in the config, or its value is wrong.