Install Ga4 in Codex

What you need first

• Codex, installed.
• Node.js, which gives the npx command the server starts with.
• Your own values for YOUR_GA4_PROPERTY_ID,YOUR_GOOGLE_APPLICATION_CREDENTIALS.

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 ga4 --env GA4_PROPERTY_ID=YOUR_GA4_PROPERTY_ID --env GOOGLE_APPLICATION_CREDENTIALS=YOUR_GOOGLE_APPLICATION_CREDENTIALS -- npx -y [email protected]

2. Replace YOUR_GA4_PROPERTY_ID,YOUR_GOOGLE_APPLICATION_CREDENTIALS with your own values.
3. Start Codex again and type /mcp: the server is listed.

Check it worked

Ask Codex: List the tools of ga4.

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.