OpenAI has expanded Codex with support for the Chrome DevTools Protocol, giving its coding agent a more powerful way to interact with websites in a browser.
The new capability, which appears as a developer-oriented browser mode, works across both the built-in browser inside Codex and Chrome. It gives the agent access to low-level site data such as JavaScript performance, console logs, network requests, page payloads, and rendered page state. In practical terms, that means Codex can see much of what a human developer would normally inspect through browser tools.
The feature also allows Codex to work directly with a site’s DOM. That opens the door to actions such as changing page styling, adjusting layout details like spacing and font treatment, or extracting structured information and assets from webpages. The result is a browser mode that can do more than navigate or summarize content. It can inspect and reshape pages with a level of control that goes beyond earlier browser-based setups.
OpenAI has not positioned the feature as fully mature. The browser mode is currently opt-in through Settings, and organizations can disable it if they do not want it enabled for their users. It is also unavailable at launch in the European Economic Area, the United Kingdom, and Switzerland.
According to the source material, the implementation is still rough around the edges. It can run slowly, struggle when pushed hard, and sometimes requires a restart. The underlying models also appear to be learning the new tooling, which means users may need careful prompting and repeated attempts to get useful results.
The addition is notable because similar browser inspection and control capabilities have already been available through external connectors linking tools like Codex or Claude to browser systems. By bringing the functionality inside Codex itself, OpenAI is able to build on its own browser stack and data rather than relying on third-party plumbing.
That internal approach may matter as OpenAI continues to push Codex beyond code generation. The company has also been working to give the product more persistent infrastructure. Days before the CDP support surfaced, OpenAI moved to acquire Ona, formerly Gitpod, with the aim of giving Codex cloud environments that can keep running for hours or even days.
OpenAI said Codex now has more than five million weekly users. The browser capability points toward a broader ambition in which an AI layer sits between people and the web, customizing and interacting with sites on their behalf. For now, though, that vision remains limited by the speed of the system and the infrastructure behind it.
The release suggests OpenAI is continuing to treat Codex as a platform, not just a coding assistant. If the browser mode improves, it could become a key part of how the company lets agents inspect, edit, and act on the modern web.