Site Spy

Site Spy is a website change monitoring tool that uses AI smart filters to watch webpages and send alerts about changes that matter. It is described as tracking any webpage and letting users specify what matters, such as price drops, new listings, when tickets go on sale, job alerts, competitor monitoring, stock availability, and news or content changes.

Its feature set includes AI auto-filtering of noise, an AI chat assistant for setting up monitors and configuring filters, and a web dashboard for managing tracked sites. Site Spy also offers one-click website tracking from a browser toolbar or right-click menu, an element inspector for monitoring specific page elements, visual diff highlighting, a snapshot timeline with side-by-side comparison of snapshots, color-coded tags, browser push notifications, badge counts, email reports, Telegram messages, RSS change feeds, screenshot capture with before-and-after comparison, cross-device sync, and connections to Claude, Cursor, and other MCP-compatible AI agents. The page also states that AI agents can monitor websites, get natural-language notifications, compare snapshots, summarize changes, and manage watches from chat.

Delivery is through a web dashboard and browser extensions for Chrome and Firefox. The service is shown with a free account flow, and the pricing section lists a free forever plan and paid plans. The free tier includes 2 watched URLs, a 1 hour minimum recheck, 5 snapshots per watch, 30 days of snapshot history, 3 manual rechecks per day, email, Telegram, and browser push notifications, 90+ webhook integrations, API access limited to 100 requests per day with read-only access, MCP read-only access, visual diff history, RSS change feeds, browser extension, and a web dashboard. Paid plans shown are €4 per month for 25 watched URLs with faster checks and fuller API access, and €8 per month for 100 watched URLs with 1 minute minimum rechecks, 1 year of snapshot history, and AI change summaries.

Site Spy describes itself as a free account service and says no credit card is needed to sign up. It is a website change monitoring product with AI-assisted filtering and alerting, rather than a general-purpose productivity app.