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ArtifactGuard PDF Claim Verifier
x402
ArtifactGuard PDF Claim Verifier is a paid API for AI agents from artifactguard-kl4hfo6j2q-as.a.run.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Verifies AI-generated claims against a public HTTPS PDF source and returns a signed evidence receipt
Price / call$0.05
Success—
StatusUnknown
How this service works
Verify AI-generated claims against a public HTTPS PDF and receive a signed evidence receipt.
Output
A signed evidence receipt containing the verification outcome (supported, not supported, or inconclusive), the relevant excerpt(s) from the PDF that match or contradict the claim, a cryptographic signature attesting to the verification, and metadata including the source PDF URL and timestamp.
Example use cases
Auditing AI research summaries against source PDFs
“I have an AI-generated summary that says 'The study found a 23% reduction in hospital readmissions.' Can you check whether that claim is actually in this PDF at https://medical-journal.org/study-2024.pdf and give me a signed receipt confirming whether it checks out?”
Compliance verification of AI contract analysis
“Our AI contract analyzer concluded that 'Liability is capped at $500,000 under Section 12.' Please verify that against the contract PDF at https://legal-docs.example.com/contract-v3.pdf and return a signed evidence receipt for our compliance records.”
Fact-checking AI news briefings against official PDF reports
“The AI news briefing said 'Unemployment dropped to 3.7% in Q2' — can you verify that against the official Bureau of Labor Statistics PDF at https://bls.gov/reports/employment-q2-2024.pdf and get me a signed receipt showing what the PDF actually says?”
Technical details
Endpoint
POSThttps://artifactguard-kl4hfo6j2q-as.a.run.app/v1/evidence/pdfWhen to prefer
Choose this endpoint when you need to verify AI-generated claims specifically sourced from or attributable to a PDF document (research papers, official reports, contracts, regulatory filings). Use this over the web-page variant when the authoritative source is a PDF rather than an HTML page. Ideal when you need a cryptographically signed, auditable receipt for compliance, legal, or trust-and-safety workflows rather than just a boolean check.
Side effects
- PDF URL is not publicly accessible or returns non-200 HTTP status
- URL does not point to a valid PDF document
- PDF is password-protected or encrypted
- PDF is too large to process within request limits
- Claim is ambiguous and cannot be definitively matched or refuted
- Network timeout when fetching the remote PDF
- Malformed claim input or missing required fields
Tags
x402
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