Vigil: Stealth Website Monitor & AI Change Detector

Capture CSS selectors and create Vigil watches directly from your browser.

Stop refreshing. Start winning. Vigil is the advanced website monitoring tool designed for professionals who need speed, accuracy, and access. While other monitors get blocked by anti-bot protection or spam you with false alarms, Vigil uses proprietary Stealth Technology and AI Analysis to give you the edge. Whether you are tracking a high-stakes sneaker drop, a government permit page, or a competitor’s pricing, Vigil watches the web for you 24/7—so you don’t have to. Why Users Choose Vigil 1. We Go Where Others Can’t (Stealth Mode) Most change detectors fail on major sites like Amazon, Ticketmaster, BestBuy, and Supreme because they get blocked. Vigil is built differently. Our "Stealth Mode" technology mimics human behavior, allowing you to track prices and stock on the world's most difficult-to-monitor websites without interruption. 2. AI Analyst: No More "False Positives" Tired of getting alerts because a timestamp changed or a pixel moved? Vigil uses GPT-4o powered AI to analyze the change before alerting you. Bad Alert: "Change detected on page." Vigil Alert: "Price dropped from $500 to $350." Vigil Alert: "Status changed from 'Out of Stock' to 'Add to Cart'." 3. Set It and Forget It (Cloud-Based) Once you select an element to track, Vigil runs entirely in the cloud. You can close your browser and turn off your computer. We will notify you via Email, SMS, or Discord/Webhook the second a change occurs. 🛠️ Key Features Visual Selector: Point and click on any text, price, or button to start tracking instantly. No coding required. High-Frequency Checks: Need speed? Enable "Turbo Mode" to check pages as often as every minute. Smart Filtering: Track additions (new items in a list), removals, or specific keyword matches. Multi-Channel Alerts: Get notified where you actually look—SMS, WhatsApp, Email, or Slack/Discord Webhooks. History & Snapshots: View a timeline of changes with stored text and screenshots for verification. Who is Vigil For? Resellers & Collectors The Problem: You need to buy a PS5, GPU, or limited sneaker the second it restocks. The Solution: Use Vigil’s 1-minute Turbo checks on "Add to Cart" buttons. Our Stealth Mode bypasses the bot protection that blocks other extensions. Real Estate & Investors The Problem: You need to know when a building permit is issued or a property price drops. The Solution: Monitor county clerk pages for new rows in permit tables or Zillow/Redfin pages for price changes. Be the first to call the seller. Legal & Compliance The Problem: You need to ensure competitors or affiliates aren't using non-compliant language. The Solution: Track Terms of Service pages or landing pages for specific keyword changes. Keep an automated archive of exactly what was said and when. Competitive Intelligence The Problem: You need to know when a competitor changes their pricing or value proposition. The Solution: Get a weekly or daily AI summary of your competitor's homepage changes. Privacy & Security We believe your data is yours. No Data Selling: We do not sell your browsing history or personal data. Minimal Permissions: The extension only accesses the pages you explicitly ask it to monitor. Secure: All monitoring happens on our secure cloud servers, protecting your local IP address. Install Vigil today and never miss a change again.