What problem does it solve? Manual cross-browser testing is slow and error-prone, and unit tests cannot catch rendering, navigation, or visual regression bugs. This Skill provides a structured Playwright MCP workflow for running real-browser E2E tests, capturing screenshots, and measuring Core Web Vitals with built-in error recovery. ## Core Features & Use Cases - Multi-Browser E2E Testing: Run automated user flows across Chrome, Firefox, Safari, and Edge, including mobile device emulation and responsive viewport checks. - Visual & Performance Validation: Capture screenshots for visual regression and measure Core Web Vitals against thresholds (LCP < 2.5s, FID < 100ms, CLS < 0.1). - Error Recovery Strategies: Handle connection loss, timeouts, missing elements, and visual mismatches with defined recovery steps. - Use Case: After shipping a new checkout flow, ask the agent to run a Playwright E2E pass across browsers, capture screenshots of each step, and verify the page meets performance budgets before release. ## Quick Start Use Playwright to run an E2E test of the login flow in Chrome and Safari, capture screenshots, and report Core Web Vitals.