Site Spy

Site Spy is a website change monitoring tool that automatically tracks pages for content updates on a schedule you define. It captures snapshots of watched pages, detects differences, and alerts you via browser push notifications, email, or Telegram the moment something changes. A visual diff view highlights additions in green and removals in red, making it easy to see exactly what changed. The tool works via a web dashboard on any device and browser extensions for Chrome and Firefox.

• One-click website tracking — Add any page to your watchlist instantly from the browser toolbar or right-click context menu.
• Element inspector — Pick specific elements on a page (prices, stock status, headlines) to monitor instead of the entire page.
• Visual diff view — Compare live content with previous snapshots using a code-diff-style view with color-coded additions and removals.
• Snapshot timeline — Browse every captured version with timestamps and compare any two snapshots side by side.
• Color-coded tags — Organize tracked websites with Finder-style color labels and filter or search instantly.
• Change notifications — Receive browser push notifications, badge counts, email reports, and Telegram messages when a tracked page changes.
• Flexible check intervals — Set monitoring frequency from every minute to weekly depending on your plan.
• Cross-device sync — Sign in once and access all tracked websites from any browser or device.
• MCP server integration — Connect Site Spy to Claude, Cursor, or any MCP-compatible AI agent to monitor websites and summarize changes directly in your AI chat.
• Web dashboard — Manage all tracked websites from a centralized dashboard accessible on any device including mobile.