Site Spy - Track website changes and see exactly what updated
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Site Spy monitors websites for changes automatically. Add any page from the browser extension (Chrome & Firefox) or web dashboard, and get notified the moment content updates. See exactly what changed with visual diffs — additions in green, removals in red. Track specific elements like prices or headlines with the built-in element inspector. Color-coded tags, snapshot timelines, and MCP server integration for AI assistants. Free plan included — no credit card needed
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Hey PH! I'm Vitaly, the solo dev behind Site Spy.
I built this because I was tired of manually checking websites for updates — price drops, job postings, documentation changes. Existing tools were either too expensive ($25-100/mo) or Chrome-only with clunky UIs.
Site Spy is different in three ways:
1. Element Inspector — Don't track the whole page. Click on a specific price tag, headline, or stock status and monitor just that element.
2. MCP Server for AI — Connect Site Spy to Claude, Cursor, or any MCP-compatible AI assistant. Your AI can monitor sites and summarize changes. No other monitoring tool has this.
3. Works everywhere — Chrome extension, Firefox add-on, and a full web dashboard that works on mobile too.
The free plan gives you 5 watches with no time limit. I'd love your feedback — what would make this more useful for you?