Uploaded June 2026 | Updated September 2026, 3 weeks ago
Codex can now use the Chrome DevTools Protocol (CDP) in Browser Use to inspect console logs, runtime errors, local storage, applied styling, network traffic, and performance profiles while working on web applications.
In this demo, Codex investigates a slow chat app by profiling interactions and inspecting network requests, then fixes the issues and supports the changes with clear measurements.
To use this functionality, enable Developer mode in the Browser settings of your Codex app and approve CDP access when Codex starts inspecting a website.
Learn more here: developers.openai.com/codex/app/browser#developer-mode
Chapters:
00:00 CDP support in Browser Use
00:23 Enable Developer Mode and approve access
00:37 Debugging a slow chat app
00:56 Profiling real bottlenecks
01:15 More in-depth browser capabilities
Codex can now use the Chrome DevTools Protocol (CDP) in Browser Use to inspect console logs, runtime errors, local storage, applied styling, network traffic, and performance profiles while working on web applications.
In this demo, Codex investigates a slow chat app by profiling interactions and inspecting network requests, then fixes the issues and supports the changes with clear measurements.
To use this functionality, enable Developer mode in the Browser settings of your Codex app and approve CDP access when Codex starts inspecting a website.
Learn more here: developers.openai.com/codex/app/browser#developer-mode
Chapters:
00:00 CDP support in Browser Use
00:23 Enable Developer Mode and approve access
00:37 Debugging a slow chat app
00:56 Profiling real bottlenecks
01:15 More in-depth browser capabilities
