Write a Stop Condition Before Testing a Browser Agent

A browser-agent demo often ends with a completed task. A useful engineering trial should also show where execution stops. Start with a read-only job, such as collecting page titles from a small set of public URLs.

Define the contract

Specify allowed domains, an action budget, a time limit, and an output schema. Record which page produced each result. Decide what happens when a page is missing, a consent dialog blocks it, or the extracted title is empty. These cases should have explicit outcomes.

For planning the trial, Easy Guides' browser-agent evaluation questions cover task fit, permissions, and activity history. Translate the relevant questions into observable checks rather than treating the guide as evidence of any vendor's behavior.

Test the boundary as well as the task

Include a page with text that tries to redirect the agent. The OWASP material on LLM application risks provides background for reviewing this class of problem. Retrieved page content should remain task data, without becoming authority to expand the job.

Log the attempted action and stop reason, then inspect the trace. A correct title list doesn't prove the boundary held. Before expanding to account actions, rerun the trial with failure cases and check the approval path separately. Keep the first experiment small enough to understand.