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Page-Change Monitor (30-Day Watch)
x402
Page-Change Monitor (30-Day Watch) is a paid API for AI agents from predator-ubuntu.taild9a745.ts.net, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-18).
Registers a URL for scheduled polling over 30 days and lets the caller poll back for detected page changes
Price / call$0.05
Success—
StatusUnknown
How this service works
Page-change monitoring for 30 days: we poll a URL on schedule, you poll us for changes
Output
Returns a watch registration confirming the URL is now being polled at the requested interval; subsequent polls to this service return any detected page changes (diffs or change flags) captured during the 30-day monitoring window.
Example use cases
Competitor pricing page surveillance
“Watch https://competitor.com/pricing every 30 minutes for the next 30 days and alert me whenever the content changes so I can react to pricing shifts.”
Government regulation update tracking
“Monitor https://regulations.gov/document/EPA-2024-001 every 120 minutes — I need to know the moment any text on that page is updated so our compliance team can respond.”
E-commerce product availability alert
“Check https://store.example.com/products/limited-edition-sneaker every 5 minutes and tell me as soon as the page content changes, since that usually means it's back in stock.”
Technical details
Endpoint
POSThttps://predator-ubuntu.taild9a745.ts.net/v1/watch?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need passive, recurring surveillance of a specific URL over days or weeks without running your own cron job or scraping infrastructure. It is ideal for low-frequency change detection (every 5 minutes to daily) where you can tolerate polling the service for results rather than receiving a push webhook. Prefer alternatives if you need real-time sub-minute alerts, webhook push notifications, or monitoring of pages requiring authentication.
Side effects
- Invalid or unreachable URL returns an error with no watch created
- interval_minutes below 5 or above 1440 rejected with validation error
- Payment not received results in 402 response and no registration
- Target URL blocks the polling bot (403/robots.txt) causing silent missed checks
- 30-day window expires and no further changes are reported after expiry
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| interval_minutes | integer |
Tags
x402
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