Live verification APIs for AI agents. No accounts, no API keys — pay per call in USDC on Base mainnet via the x402 protocol.
Agent-readable catalog: /llms.txt (endpoint URLs, prices, what each API verifies, example request/response pairs).
| API | Price/call | Verifies |
|---|---|---|
agent-sanctions-screen | $0.10 | OFAC SDN + EU FSF + UK FCDO sanctions screening |
agent-entity-verify | $0.15 | US business entity existence/standing (SoS + GLEIF) |
agent-domain-trust | $0.05 | Domain trust score (RDAP + DNS + HTTPS) |
agent-sec-lookup | $0.08 | SEC EDGAR company data + recent filings |
agent-debarment-check | $0.12 | SAM.gov federal exclusions (name/UEI/CAGE) |
agent-drug-verify | $0.10 | FDA NDC drug product verification |
How to call: POST the endpoint with a JSON body. Unpaid calls return 402 + PAYMENT-REQUIRED; pay with x402 v2 (Base mainnet USDC, facilitator https://facilitator.xpay.sh) and retry. Machine-readable discovery on each host: /.well-known/x402 and /openapi.json.