Browser Tools for AI Agents Part 1: Playwright, Puppeteer, and Why Your Agent Picked Playwright

The first time I watched an AI agent drive a browser, I laughed. Out loud. Not because it was funny, but because it was so profoundly uncanny. Like watching a toddler who somehow knows how to file taxes. The cursor moved with purpose. It found form fields I would've struggled to locate myself. It waited patiently for a spinner to clear, then clicked a button that hadn't even rendered when the page first loaded. I sat there with my coffee going cold thinking: how does it know what to click? What