{"service":"agent-drug-verify","description":"Pay-per-call FDA drug product lookup for AI agents (x402). POST /verify with an NDC or drug name; pay $0.10 in USDC on Base per call.","payment":{"protocol":"x402 v2","network":"eip155:8453","price_per_call":"$0.10","mode":"mainnet"},"data_source":"FDA NDC Directory (public domain, 21 U.S.C. § 360)","endpoints":{"POST /verify":"{ndc?: string, name?: string} - one of ndc or name is required","GET /coverage":"index coverage + build info","GET /openapi.json":"OpenAPI 3.1 document","GET /.well-known/x402":"x402 resource manifest"},"disclaimer":"Informational only, not medical advice. FDA data quality is the labeler's responsibility per 21 CFR 207.39. Verify critical information against official FDA sources."}