skillFrontend Skills1 min read
webapp-testing
Your agent runs your app, clicks through it, and actually verifies the UI — not just that types check.
Drives local web apps with Playwright from Python — boots a dev server, inspects the DOM, screenshots, reads console logs.
Install
npx skills add anthropics/skills --skill webapp-testing -g -ySummary
Anthropic's official testing skill. It handles the full loop: spin up the dev server via with_server.py, open the page in Playwright, find the right selectors, take screenshots, scrape console output, and hand the evidence back to the agent. Turns "looks done" into "I watched it work." Pairs well with any agent that just wrote new UI code.
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