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Webpage Snippet Change Watcher
x402
Webpage Snippet Change Watcher is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Runs a change-detection check on a webpage snippet URL and returns whether it changed since the last call, with before/after diffs and timestamps
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for webpage snippet: runs the check and compares it with the result from your previous call for the same url (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when lightweight web page snippet changes. $0.01 per check.
Output
Returns the current content of the webpage snippet, a boolean 'changed' flag indicating whether it differs from the previous call, a list of fields that changed with their before and after values, and a timestamp of when the snippet was last seen. Previous results are stored for 90 days per URL.
Example use cases
Price drop alert on product page
“Watch https://store.example.com/product/widget for me and tell me when the price or availability text changes — I want to know the before and after values as soon as it updates.”
Competitor announcement monitoring
“Check https://competitor.com/news every day and alert me the moment any new content appears on that snippet, showing me exactly what changed.”
Job board vacancy tracking
“Monitor https://jobs.example.com/openings for me on a schedule and tell me when new listings appear or any existing ones change, including what the page said before versus now.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/watch/page-snippetWhen to prefer
Use this endpoint when you need lightweight, scheduled change detection on a specific webpage snippet without scraping the entire page. It is ideal for polling tasks where you want a stateful before/after comparison automatically managed server-side (90-day history), avoiding the need to store previous snapshots yourself. Prefer it over full-page scrapers when you only care about whether a targeted section changed, not a full content extraction.
Side effects
- URL is unreachable or returns a non-200 status
- No previous result exists for this URL (first call returns changed=false or null baseline)
- Snippet selector yields no content on the page
- Rate limiting or payment failure prevents the check
- Page content is behind authentication or anti-bot measures
- Result older than 90 days has been purged, resetting the baseline
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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