OpenAI is giving its Codex AI agent a serious upgrade: a developer mode that taps directly into the Chrome DevTools Protocol (CDP). Now, instead of just looking at screenshots or using basic browser controls, Codex can dive into the guts of a live webpage — analyzing JavaScript performance, checking console logs, monitoring network traffic, and inspecting DOM structure and CSS styles.
https://twitter.com/OpenAIDevs/status/2065226355495895521
But with great power comes great responsibility. Full CDP access means Codex could peek at sensitive browser internals, so OpenAI built in a safety check. When Codex wants to use CDP on a site, it’ll ask for your explicit permission — and you get to review exactly what site and task it’s planning to poke at before you approve.
To turn it on, head to your Codex settings: Settings > Browser and check Enable full CDP access. (If your company’s policy blocks it, you won’t be able to flip the switch locally.) In Codex’s built-in browser, you can interact using @Browser; if you prefer Chrome, you’ll need the Codex Chrome extension and then invoke [@Chrome](https://t.me/Chrome).