qa skill drives a website with a real browser, judges how well it does the thing you asked about, and returns a score from 1 (broken) to 5 (excellent) with evidence — the deliverable is a verdict, not a screenshot dump. Use it to test, QA, evaluate, or score a site, page, flow, or app, including a local dev server (e.g. localhost:5173) which it tunnels out automatically. It runs on a real Browser Use cloud browser.