{"service":"agent-tariff-lookup","description":"Pay-per-call US import duty (HTS) lookup for AI agents (x402). POST /lookup with an HTS code or a product description; pay $0.08 in USDC on Base per call. Returns base General (MFN) and Column 2 rates from the official USITC Harmonized Tariff Schedule.","payment":{"protocol":"x402 v2","network":"eip155:8453","price_per_call":"$0.08","mode":"mainnet"},"data_source":"USITC Harmonized Tariff Schedule export (hts.usitc.gov) — public domain","endpoints":{"POST /lookup":"{hts: string} code lookup, or {query: string} description search","GET /coverage":"index coverage + build info","GET /openapi.json":"OpenAPI 3.1 document","GET /.well-known/x402":"x402 resource manifest"},"disclaimer":"Reference lookup only — not legal, customs, or trade advice. Rates shown are the base HTS rates of duty (General / Column 2) from the USITC Harmonized Tariff Schedule. Additional duties may apply and are NOT included: Section 301 (China) tariffs, Section 232 tariffs, IEEPA / reciprocal tariffs, antidumping and countervailing duties (AD/CVD), and Chapter 99 special provisions can substantially change the total duty owed. Confirm classification and total duty with CBP or a licensed customs broker before importing."}