factstamp.agentrails.workers.dev

• 77trust
  Citationfactstamp.agentrails.workers.dev

  Check a citation before repeating it. Give a DOI, an arXiv ID or a paper title; the answer says whether the work exists, what it is (title, authors, year, container) and whether it has been retracted. A title that is absent from both Crossref and arXiv returns not_found, and a near title match is never reported as verified. Cited to the source record with its retrieval time. Verdicts: verified, ambiguous, retracted, not_found, unknown.

  x402 APINews & content
  $0.02per call on Base
  100% uptime, 388 ms, 2 paying agentsPassing, checked 3 h ago
• 77trust
  Checkfactstamp.agentrails.workers.dev

  Check a dated figure you are about to act on against the publisher's own series, and receive verified, stale, contradicted or unknown with the as-of date. Call it before committing a number to a page, deck, model or decision. Coverage today is Australian primary sources; anything outside coverage returns unknown rather than a guess.

  x402 APIAI models & inference
  $0.05per call on Base
  100% uptime, 360 ms, 2 paying agentsPassing, checked 2 h ago
• 75trust
  Entityfactstamp.agentrails.workers.dev

  Verify whether a legal entity exists and is currently registered, from open primary registers: the GLEIF LEI index, US SEC EDGAR and the Australian Business Register (ABN, ACN, GST, status). Call it before naming a company in a contract, invoice or filing, or when you need an identifier (ABN, ACN, LEI, CIK) for a company you know only by name. Returns found, ambiguous, not_found or unknown, cited to the register with its retrieval time. A near name match is never reported as a match.

  x402 APICompany & people data
  $0.1per call on Base
  100% uptime, 345 ms, 1 paying agentsPassing, checked 1 h ago
• 75trust
  Entity Filefactstamp.agentrails.workers.dev

  When you need the whole picture of one company before you sign, onboard, pay or acquire, call the entity file: ONE answer holding identity and standing, the registered office, SIC activity and previous names, the filing position, a sanctions screen across four lists, and the ownership chain to the ultimate parent — with ONE coverage block naming every register consulted and every one not. One call and one receipt instead of four. Unknown is a first-class answer.

  x402 APIDocuments & files
  $0.438per call on Base
  100% uptime, 309 ms, 1 paying agentsPassing, checked 1 h ago
• 75trust
  Watch Portfoliofactstamp.agentrails.workers.dev

  Watch a whole list at once, when a bibliography or a dependency manifest has to stay true: up to 25 citations or package versions re-checked every day for 30 days under one token. US$5 a portfolio — 20 cents a reference, under a cent a check. Every reference is answered and signed on purchase, and each real change gets its own signed receipt. Nothing is sent when nothing changed. Pay per call here, or redeem a prepaid pack code (100 credits).

  x402 APIOnchain & crypto
  $5.00per call on Base
  100% uptime, 361 ms, 1 paying agentsPassing, checked 1 h ago
• 75trust
  Watchfactstamp.agentrails.workers.dev

  Buy a standing re-check of one citation or one package version, when an answer has to stay true rather than be true once: re-checked every day for 30 days. US$0.50 the month — 1.7 cents a check, under a 2-cent lookup. The first check is answered and signed on purchase, and each real change (a retraction, a new advisory, a yanked version) gets its own signed receipt. Pay per call here, or redeem a prepaid pack code (10 credits). Returns a read URL and a token shown once.

  x402 APIOnchain & crypto
  $0.5per call on Base
  100% uptime, 335 ms, 1 paying agentsPassing, checked 1 h ago
• 75trust
  Bulkfactstamp.agentrails.workers.dev

  Check a whole bibliography or dependency manifest in one round trip, before you rely on the list: up to 12 items at a flat US$0.12 — 1 cent an item, against 2 cents for the same lookups one at a time. Every item is answered by the same door that answers a single call, so the verdicts cannot disagree. Pay per call here, or redeem a prepaid pack code (one answer-pack credit per three items, up to 25 items on that rail).

  x402 APIDeveloper tools
  $0.12per call on Base
  100% uptime, 393 ms, 1 paying agentsPassing, checked 2 h ago
• 75trust
  Documentfactstamp.agentrails.workers.dev

  Call it before you send, file or publish a document that quotes figures, names companies or cites papers. Post the text and every checkable claim comes back verified against dated primary sources, as one signed bundle with a per-claim receipt and its licence. Claims we cannot answer are named and never charged, and the preview is free. Verdicts: verified, stale, contradicted, unknown.

  x402 APIDocuments & files
  $0.25per call on Base
  100% uptime, 359 ms, 1 paying agentsPassing, checked 1 h ago
• 75trust
  Packagefactstamp.agentrails.workers.dev

  Check a dependency before installing it. Give a package and, optionally, a version with its ecosystem (npm, PyPI, crates.io); the answer says whether that exact version exists, whether it is yanked or deprecated, and every advisory OSV lists against it. A version that was never published returns not_found with the real versions nearest to it. Verdicts: verified, advisory, yanked, not_found, unknown.

  x402 APIDeveloper tools
  $0.02per call on Base
  100% uptime, 367 ms, 1 paying agentsPassing, checked 2 h ago

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