What problem does it solve? Manually verifying local development pages and web apps is slow and repetitive. This Skill lets the AI open, navigate, click, type, screenshot, and inspect pages directly in the Codex in-app browser, so you can test localhost apps and verify UI behavior without leaving your workflow. ## Core Features & Use Cases - In-App Browser Automation: Control the Codex iab browser through a Node REPL runtime using Playwright locators, DOM snapshots, and screenshots. - Local Development Testing: Open localhost, 127.0.0.1, ::1, or file:// targets, reload after code changes, and verify UI state with fresh snapshots. - Safe Interaction Policy: Built-in confirmation rules for sensitive actions like form submissions, purchases, deletions, and logins. - Use Case: Ask the AI to open localhost:3000, log in to your app, click through the checkout flow, and return screenshots confirming each step works. ## Quick Start Ask the AI to open localhost:3000 in the in-app browser and verify that the login page loads correctly.