Site Spy is a browser extension that monitors specific webpage elements for changes and exposes updates via RSS feeds, diff views, and notifications. The tool allows users to track individual page elements like prices or stock status rather than entire pages, with support for browser push, email, and Telegram alerts. It also includes an MCP server for AI agent integration and provides detailed change history with visual diffs.
Background
Web page monitoring tools traditionally track entire pages, but Site Spy introduces element-level tracking for more precise change detection. RSS feeds for webpage changes provide an open, standardized way to consume updates across different applications.
- Source
- Hacker News (RSS)
- Published
- Mar 12, 2026 at 12:21 AM
- Score
- 6.0 / 10