If your Codex is making unexpected requests, please check if ambient-suggestions are working.

Recently, when I restarted Codex Desktop App, I’ve noticed a lot of requests consuming my API quota, even though I haven’t done anything. These requests all medium-intensity GPT 5.4 or low-intensity 5.4 mini. So this might Ambient suggestion working. It will summarize your recent activities into some suggestions and then put them on the ‘New Session Page’. If you don’t want to use it or are confused by inexplicable API requests, you can check if there is a ambient-suggestions/ in .codex/ or just check it in Codex Settings → Personalization → Ambient suggestion