It's part of antigravity for free. Just make a blank workspace and ask it to use a browser to do X and it'll start chrome and start navigating, clicking, scrolling, etc.
Yeah, I only found it by accident when I asked it to make a change against my web app and it modified the code then popped open Chrome and started trying different common user/pass combinations to log into the app so it could validate the changes.
A human in that position would try a few obvious things like "admin/admin" and then go hunting in the readme to see if a specific user is documented for testing and then maybe go to the user database and see if there is an existing admin user and maybe reset the password to get in.
