Submission by EJDev

Sentinel is a real-time AI Focus Guardian built as a Chrome extension that actively protects user productivity. Instead of passively tracking behavior, Sentinel analyzes browsing activity in real time and makes intelligent decisions to allow, warn, or block distracting content. It acts as a behavioral control layer between the user and the internet. The system uses a backend AI pipeline for reasoning and web content understanding, combined with a real-time browser extension that enforces decisions instantly. When users drift into distractions, Sentinel intervenes with warnings, redirects, and optional voice feedback to bring them back on track. Key features: * Real-time page analysis and classification * Strict Mode and Deep Work enforcement * Instant blocking and smart redirection * Voice feedback for behavioral correction * Focus tracking and productivity scoring * Lightweight Chrome extension with backend AI processing Sentinel transforms focus from a passive habit into an actively enforced system, helping users stay aligned with their goals without relying on willpower alone.