Desktop app
Set up the browser extension
Bring the browser you actually use into your work with the agent.

Set up the browser extension and try it on something real. I think it is magical. A page you are working on is a much better starting point than a long explanation of what you think the page looks like.
For a UI task, tell the agent which page to use and what to check. Ask it to follow the actual flow and report what it observed. Be specific about whether you want an inspection or a change.
Try it
- Complete the browser extension setup offered by your Codex app.
- Open the page you want to work on and identify it in the task.
- Ask the agent to inspect a specific flow and describe the result.
A prompt to steal
Use the browser to inspect this page: ... Check whether the main navigation and layout work. Report what you observe and suggest fixes before changing anything.