What problem does it solve? Manually testing web pages across browsers, viewports, and user flows is repetitive and error-prone. This Skill writes and executes custom Playwright automation code on demand, with automatic dev server detection so you never hardcode localhost URLs. ## Core Features & Use Cases - Custom Browser Automation: Generates and runs Playwright scripts for any task—page testing, form filling, login flows, link checking, and screenshots—via a universal executor (run.js). - Auto Dev Server Detection: Scans common ports (3000, 3001, 5173, 8080, etc.) to find running local servers before writing test code. - Reusable Helpers & Custom Headers: Provides utility functions for safe clicks, retries, cookie banners, and table extraction, plus environment-variable-based HTTP header injection for identifying automated traffic. - Use Case: Ask to verify a login flow on your local app—the Skill detects the dev server on port 3001, writes a test script to /tmp, runs it in a visible browser, and confirms the redirect to the dashboard. ## Quick Start Ask the assistant to test whether the login page on your local dev server redirects correctly after submitting valid credentials.