What problem does it solve? Manually verifying that a web feature works—clicking through flows, checking console errors, capturing screenshots for bug reports—is slow and hard to reproduce. This Skill gives an AI agent a persistent headless Chromium browser it can drive with fast (~100ms) commands to navigate pages, interact with elements, and collect evidence automatically. ## Core Features & Use Cases - Interactive element snapshots: Capture the ARIA tree with -i to list clickable elements, including non-ARIA dropdown items via cursor-interactive scanning, then click or fill them by reference. - State verification and diffing: Run snapshot -D to diff page state before and after an action, assert visibility/enabled/checked states, and inspect console and network logs. - Visual evidence and responsive testing: Take annotated screenshots, render mobile/tablet/desktop viewports, test file uploads and dialogs, and diff staging against production. - Use Case: After deploying a login flow, navigate to the page, fill credentials, submit, diff the snapshot to confirm the dashboard appeared, and save an annotated screenshot as proof. ## Quick Start Ask the agent to open your staging site in the browser, test the login flow, and take a screenshot of the result.