Claude skills for QA

4 skills in the bank are filed under QA. They are grouped here because they compete for the same jobs — which is the reason an agent reaching for one of them sometimes gets another.

• BenchmarkgstackDetects performance regressions by measuring how fast pages and interactions run and comparing them against a baseline, so a change that made things slower is caught. It is about speed over time, not finding functional bugs, reporting them, or driving the browser to look at the page.
• BrowsegstackA fast headless browser for opening a running site, clicking through flows, and seeing what actually renders — a tool for dogfooding and eyeballing the app, not a systematic bug hunt. It drives and views the site rather than producing a QA report, fixing defects, or benchmarking speed.
• QAgstackSystematically tests a running web app for bugs AND fixes each one it finds in the same pass, so you end up with a working product rather than a defect list. The fixing is the point — unlike a report-only QA sweep, a plain headless browser for eyeballing the site, or a performance-regression check.
• QA OnlygstackRuns a thorough QA pass over a web app and REPORTS every defect it finds without changing any code, leaving the fixes to the team. It is the report-only variant — distinct from a sweep that also repairs the bugs, from merely driving a headless browser to look at the site, and from measuring performance.