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Structured Data Extract Change Watch
x402
Structured Data Extract Change Watch 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).
Monitors a URL's JSON-LD structured data and reports whether it changed since the last check, including which fields changed and their before/after values.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for structured data extract: 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 structured data extractor changes. $0.01 per check.
Output
Returns the current JSON-LD structured data extracted from the URL, a boolean 'changed' flag indicating whether it differs from the previous check (stored up to 90 days), a list of exactly which fields changed with their before and after values, and a timestamp of when the data was last seen.
Example use cases
E-commerce price change detection
“Watch the JSON-LD on https://shop.example.com/item/456 and alert me if the price or availability fields in the structured data have changed since you last checked.”
Competitor SEO schema monitoring
“Check whether the schema.org markup on my competitor's homepage https://rival.com has changed at all — I want to know which structured data fields were added, removed, or modified.”
Scheduled product listing audit
“Run a structured data change check on https://listings.example.com/property/789 and tell me if the JSON-LD has been updated, including the exact before and after values for any fields that changed.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/watch/site/jsonldWhen to prefer
Choose this endpoint when you need to detect changes in JSON-LD/schema.org structured data specifically, rather than general page content or HTML changes. It is ideal for scheduled monitoring workflows where you want field-level diff reporting (before/after values) rather than just a raw snapshot. Prefer it over generic web scrapers when tracking SEO-relevant structured data like product prices, availability, review ratings, or business details encoded in JSON-LD.
Side effects
- URL is unreachable or returns non-200 status — check fails with an error
- No previous result stored (first call) — returns current data with no comparison baseline
- Page has no JSON-LD structured data — returns empty result
- 90-day snapshot has expired — previous result unavailable, comparison cannot be made
- Malformed JSON-LD on the target page — extraction may fail or return partial data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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