Site Spy

Site Spy monitors websites for changes and shows you exactly what's different with visual diffs.

How it works:

1. Add any URL or use the browser extension to click on a specific element (a price, headline, stock status)
2. Site Spy checks on your schedule — from every minute to weekly
3. When something changes, you get an instant notification (browser push, email, or Telegram)
4. Open the visual diff view to see exactly what was added (green) or removed (red)

Key features:

• Element Inspector: Click on any part of a page to track just that section instead of the whole page. Uses Shadow DOM isolation so it never interferes with the website.
• Visual Diff Viewer: Side-by-side and unified diff views with color-coded changes, just like a code diff.
• Snapshot Timeline: Browse every captured version with timestamps and compare any two snapshots.
• Color-Coded Tags: Organize your tracked websites with Finder-style color labels.
• Notifications: Browser push notifications, email alerts, and Telegram messages when changes are detected.
• AI Integration: MCP (Model Context Protocol) server lets AI assistants like Claude and Cursor create watches, check for changes, and summarize diffs.
• Multi-Browser: Chrome extension, Firefox add-on, and web dashboard accessible from any device.

Use cases:

• Track price drops on products you want to buy
• Monitor job boards for new postings
• Watch competitor websites for updates
• Follow government or legal pages for regulation changes
• Keep tabs on news, blogs, or forums