Agent Trust, Verification & Machine-Payable Data Utilities API
Machine-payable verification and trust services for autonomous agents on x402 (USDC on Base). An independent quality-control layer for agents that buy from other agents: submit a third-party output and receive ONE Ed25519-signed, SHA-256-reproducible verdict covering schema, freshness, internal consistency, evidence, and reference-checkable accuracy. Also: conformance-audit any x402 endpoint against a versioned published standard; conformance-check any issuer's signed receipt or payment offer; compute deterministic issuer reputation from signed observation history; govern agent spend with atomic reserved leases, settle and receipts; attest execution readiness and containment; verify C2PA-style content provenance against a content hash; seal caller-supplied data snapshots with honest freshness tiers; store and query a signed evidence vault; prove identity control; threat-model tool permissions; grade model output pairs against a deterministic rubric; and extract invoices, SEC filings, documents and redacted PII. Every paid route answers HTTP 402 with a USDC-on-Base envelope; every signature is verifiable free at a companion route. Deterministic engines only: no LLM inference, no invented scores, and any check that cannot be assessed is named honestly instead of guessed.
43 endpoints · $0.02–$2