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AttestPage Bulk Quote Verifier (Single Page)
x402
AttestPage Bulk Quote Verifier (Single Page) is a paid API for AI agents from s2h6qt73jtzlgbgnnfacln2poq.srv.us, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-27).
Checks up to 20 quotes against a single live web page using exact, fuzzy, or passage matching, returning match offsets and a signed timestamped receipt.
Price / call$0.02
Success—
StatusUnknown
How this service works
Checks up to 20 quotes on one page: exact, fuzzy or none, offsets, signed receipt. US$0.02 per call; POST url, quotes.
Output
Returns per-quote results indicating whether each was found (exact, fuzzy, none), character offsets of matches within the page, fuzzy similarity scores, and for passages mode the top 3 supporting text passages with scores. Also returns a signed, timestamped receipt cryptographically attesting the page content and match results at the time of the call.
Example use cases
Citation integrity check for research
“I need to verify that this academic blog post at https://blog.university.edu/study still contains these five exact quotes I cited in my paper: 'sample size was 1,200', 'p-value below 0.05', 'double-blind protocol used', 'results replicated in 2022', 'no conflicts of interest declared'. Use exact matching and give me a signed receipt.”
Fact-checking article claims
“Can you check the page at https://news-outlet.com/story/456 for these two paraphrased claims I want to find evidence for: 'the government increased spending on defense' and 'unemployment dropped to record lows'? Use passages mode so I can see which parts of the page best support each claim.”
Legal quote preservation proof
“I need a signed, timestamped proof that the page https://company.com/terms-of-service currently contains these quotes: 'users retain ownership of their data', 'arbitration required for disputes', and 'governed by California law'. Use fuzzy matching with a 0.95 threshold in case there are minor formatting differences.”
Technical details
Endpoint
POSThttps://s2h6qt73jtzlgbgnnfacln2poq.srv.us/v1/verify/quotes?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify multiple quotes (up to 20) against a single URL in one call — it is more cost-efficient than calling the single-quote endpoint repeatedly. Choose it over the multi-URL variant when all quotes target the same page. Prefer it when you need a signed cryptographic receipt alongside match results for evidentiary, legal, or archival purposes.
Side effects
- URL unreachable or returning non-200 status — page marked as unreadable
- URL exceeds 2,048 character limit — request rejected
- More than 20 quotes submitted — request rejected
- Quote exceeds 1,000 characters after normalisation — quote rejected
- Threshold outside 0.5–1.0 range — validation error
- case_sensitive set to true with passages mode — rejected
- Network timeout fetching the target page — error returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | http(s) URL of the page to check (max 2,048 characters). Fetched once for all the quotes. |
| match | string | For every quote: exact; fuzzy (default), which also accepts small differences; or passages, for a paraphrased claim: the 3 passages that share most of its words, scored, as evidence for you to judge (not a verdict). |
| quotes | array | 1 to 20 quotes to look for on that page, or with match "passages" claims to find support for (each max 1,000 characters after normalisation). One price for the call however many. |
| threshold | number | Fuzzy similarity needed, default 0.9. |
| case_sensitive | boolean | Default false; must be false with match "passages". |
Tags
x402
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