HARPA | Web Watcher is an AI-powered automation agent for Chrome developed by HARPA LLC. This browser add-on integrates GPT-3 and GPT-4 technology, offering a range of features for web browsing and automation. With HARPA, users can access AI-assisted search and browsing, chat with AI on any web page, and utilize over 100 predefined page-aware commands. The add-on also allows users to write text content with AI, generate summaries of YouTube videos, and create customizable AI commands. HARPA further offers website monitoring and automation capabilities, enabling users to automate site monitoring and page refresh, detect price drops and back in stock alerts, and turn websites into APIs. The user-centered design of HARPA includes a draggable AI sidebar, markdown rendering, text and element grabber, and dark/light mode. Privacy is prioritized, as HARPA does not send user data away from the browser. HARPA | Web Watcher is a powerful tool for enhanced web browsing and automation.