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extract-h2-as-json-watch
x402
extract-h2-as-json-watch is a paid API for AI agents from page.intel.rallylive.ca, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).
Monitors a webpage's H2 headings for changes and returns current H2 data, a changed flag, before/after diffs, and last-seen timestamp.
Price / call$0.02
Success—
StatusUnknown
How this service works
Change watch for extract h2 as json: runs the check, compares it with the result from your previous call for the same url (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.
Output
Returns a JSON object containing the current H2 headings extracted from the page, a boolean 'changed' field indicating whether they differ from the previous call for the same URL, a list of fields that changed with before and after values, and a timestamp of when the state was last seen. The previous state is retained for 90 days.
Example use cases
Competitor product page headline tracker
“Watch https://competitor.com/products and let me know whenever their H2 headings change — I want to see what changed, the before and after text, and when it was last checked.”
News site section heading monitor
“Check https://bbc.com/news to see if any H2 headings have changed since your last visit, and return the current headings along with any differences you find.”
Documentation site structure alert
“Monitor https://docs.myplatform.com/api for any changes to H2 headings — if something changed, show me the before and after values so I can see what sections were added or renamed.”
Technical details
Endpoint
GEThttps://page.intel.rallylive.ca/watch/page/h2/json?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to detect changes specifically in H2 headings of a webpage over time, rather than a one-off extraction. It is ideal for scheduling recurring checks, as it maintains a 90-day history per URL and returns structured diffs showing exactly what changed and when. Prefer it over a plain H2 extraction endpoint when your goal is change alerting or audit trails.
Side effects
- URL is unreachable or returns non-200 status — check may fail or return empty H2 data
- No prior snapshot exists for the URL — first call establishes baseline, 'changed' will be false
- Page has no H2 headings — returns empty array with changed false
- Prior snapshot expired after 90 days — treated as a new baseline
- Rate limiting or payment failure for the $0.02 USDC per-call fee
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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