Install @coretext-ai/test-this-out-f702d4f7-d880-430e-a93d-dd3256e5bd3f in TUUI

What you need first

• TUUI, installed.
• Node.js, which gives the npx command the server starts with.

Steps

1. Open ~/.codex/config.toml, or create it. The Codex CLI, its IDE extension and the ChatGPT desktop app share this file.
2. Add this table at the end of the file.

{
  "mcpServers": {
    "test-this-out": {
      "command": "npx",
      "args": ["-y", "@coretext-ai/test-this-out-f702d4f7-d880-430e-a93d-dd3256e5bd3f"]
    }
  }
}

3. Save the file and restart TUUI.

Check it worked

Ask TUUI: List the tools of test-this-out.

If it does not start

spawn npx ENOENT

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

Nothing changes after a restart

The file is not valid JSON any more. Look for a missing comma where the block was added.