Webapp Testing skill: what it does and how to install it

What it does. Uses Playwright through its MCP server or a local Node.js setup to navigate pages, interact with controls, verify elements and URLs, inspect logs and network requests, and capture screenshots. It includes patterns for waits, selectors, error handling and resource cleanup.

When to use it. For testing and debugging locally running web applications, including forms, user flows and responsive layouts. It requires Node.js and cannot test native mobile applications; complex authentication may also need extra configuration.