Site Spy monitors pages and alerts you when a selected price, slot or headline changes. Free plan, paid tiers from €9/month. Features and pricing reviewed.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
Site Spy is a website change monitoring tool that watches web pages and alerts you when the part you care about changes. It targets people tracking prices, appointment spots, restocks, competitor pages and new listings, and it runs as a web dashboard with Chrome and Firefox extensions.
Its core idea is selection. Rather than flagging every edit to a page, Site Spy follows only the price, slot or headline you point at. The website describes the product as independently built by Vitaly Kuprin.
Setup takes three steps. You create an account and paste a URL, then click a price, slot or headline on the saved page, or drag a box around an area. Site Spy then checks the page on the schedule you choose and sends an alert when the selected content changes.
You do not write scripts or learn selectors. A phrase mode lets you name text such as 'Sold out' and get notified once when it clears. When something changes, a visual diff shows what was added, edited or removed, and you can compare any two snapshots.
Beyond element and area selection, Site Spy keeps a history of every change and lets you go back to earlier snapshots. Watches can be grouped with color tags, and a single dashboard lists every page with its status, last check and last change. Check intervals range from every 5 minutes on Pro to once a week.
Alerts go out by email, Telegram, browser push or webhooks on every plan. Pro and Agency add AI summaries of changes, screenshots and visual diffs. Developers can use RSS feeds, a REST API and an MCP server that connects Claude, Cursor and other MCP-compatible assistants.
Site Spy is a website change monitoring tool. It checks pages on a schedule you set and alerts you when the part of a page you selected changes. It works through a web dashboard and Chrome and Firefox extensions.
Site Spy has a free plan and paid plans at €9/month (Starter), €25/month (Pro) and €149/month (Agency). Yearly billing is shown at 20% off. Prices are in EUR.
Yes. The Free plan covers 5 pages and 150 checks a month with no credit card. It includes email, Telegram and browser push alerts, the browser extensions, and API, MCP and RSS access.
Yes, and that is the intended way to use it. You click an element or drag a box around an area, and only changes inside that selection alert you. A phrase mode can also watch for specific text such as 'Sold out'.
Site Spy sends alerts by email, Telegram, browser push or webhooks. All of these channels are included on every plan.
Yes. It provides an MCP server for Claude, Cursor and other MCP-compatible assistants, which can create watches, compare snapshots and summarize changes. A built-in AI chat can also set up monitors.
Yes. You can try Pro features free for 5 days from your dashboard once your email is verified. No card is needed.
The site says all three let you point at what to watch. Site Spy adds a phrase mode that emails once when a line disappears, a built-in AI chat, visual diffs, MCP integration, browser extensions and a free plan.