{"service":"device-clearance-verify","description":"Pay-per-call FDA 510(k) clearance verification for AI agents (x402). POST /verify with a K-number or device name; pay $0.05 in USDC on Base per call. 510(k) is clearance, not FDA approval.","payment":{"protocol":"x402 v2","network":"eip155:8453","price_per_call":"$0.05","mode":"mainnet"},"data_source":"openFDA 510(k) bulk (CC0 public domain)","endpoints":{"POST /verify":"{k_number?: string, device?: string} - 510(k) K-number or device/applicant name","GET /coverage":"index coverage + build info","GET /openapi.json":"OpenAPI 3.1 document","GET /.well-known/x402":"x402 resource manifest"},"disclaimer":"Informational only, not legal or regulatory advice. A 510(k) clearance means FDA found the device substantially equivalent to a predicate — it is NOT an FDA approval. Absence from this index does not mean a device is unlawful; devices may be 510(k)-exempt, cleared under other pathways, or in the weekly export lag. Verify critical information against FDA sources."}