ChangeDetection.io (official)

changedetection.io is the open source website change detection and web page monitoring tool, and this is its official MCP server. Connect Claude, ChatGPT, Cursor, VS Code or any MCP client to your monitors and ask about web page changes in plain language: what changed, when it changed, and what it means. What you can ask - "What changed on my competitor pages this month?" - every change across many monitors between two dates, as diffs, in one call (get_changes) - "When did the price drop to 319?" or "When was this text first on the page?" - search every snapshot of a page's history (find_change) - "Which new tour dates, products or headlines were added, and when?" - a timeline of every line added or removed (line_timeline) - "What on my wishlist is back in stock, and is anything cheap right now?" - stock and price tracking with price history: lowest, median, highest and the last price change (restock_status) - "Show me the page as it looked last Tuesday" - snapshot text, HTML, diffs and screenshots (get_snapshot, get_diff, get_history, get_screenshot) - "Why aren't my monitors being checked?" - queue, workers and failing monitors (get_system_info) What it can do for you (with write access) - Add web pages to monitor, one at a time or in bulk, with CSS/XPath filters, trigger text, conditions, browser steps and AI change intent - Set up price drop and back-in-stock alerts on product pages - Organise monitors into groups (tags), recheck, pause and unpause them - Set up notifications to Slack, Discord, Telegram, Microsoft Teams, email, ntfy and 140+ other services, and send a test notification Typical workflows - Competitor and pricing intelligence: weekly reports of what changed on competitors' pricing, product and terms pages - Shopping: track products for restocks and price drops, ask which are cheapest now - Compliance and legal: date when a policy, terms or regulation page changed, with the exact diff - Research and news: follow a topic across pages over months or years - Developers: watch changelogs, release notes, API docs and status pages Security and permissions - Sign in with OAuth 2.1 (PKCE, Dynamic Client Registration and Client ID Metadata Documents), or an access token - A None / Read / Write permission grid per connection for monitors, groups, notifications, browser steps and system info, plus tokens limited to selected groups - Read-only mode for assistants that should only look - Text from monitored pages is treated as untrusted data, never as instructions Hosted or self-hosted Use the hosted service, where every account gets its own MCP endpoint, or run changedetection.io yourself for free (Apache-2.0) with Docker or pip and switch on the MCP server under Settings AI MCP. Streamable HTTP transport. Learn more and connect: https://changedetection.io/MCP Source code: https://github.com/dgtlmoon/changedetection.io

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