Public proof · synthetic fixtures · offline only

Extraction claims
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A dependency-free reference extractor and deterministic acceptance benchmark for a bounded x402 extraction product. No buyer repository, credentials or production access were used.

30 / 30fixture cases passed
180 / 180expected fields matched
32 / 32Node tests passed
Stable output contract

Six inspectable fields

The reference implementation returns title, description, canonical URL, page language, deduplicated public HTTP(S) links and the number of valid JSON-LD records.

Coverage includes metadata precedence, relative URLs, languages, JSON-LD, entities, Unicode, duplicate links, invalid structured data and missing values.

{
  "title": "string or null",
  "description": "string or null",
  "canonical": "absolute URL or null",
  "language": "string or null",
  "links": ["public https URL"],
  "structuredDataCount": 0
}

Reproduce the result

Download the complete source snapshot, run npm test and npm run report, or inspect the generated JSON report directly. SHA-256 receipts bind the published artifacts.

report.json
3EE45690CF8780E0CE15C5ECF4416AD8715A054B760413ABC6BEF803012764D1
source.zip
5FC099DC99A94449DE5B6195E2C53CBF7957C8FFFDF7043F9D086C78B1A35AF6
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