TradeRails
Trade and logistics identifier checks: GTIN/GS1 barcodes, SSCC-18, ISO 6346 container numbers, IMO numbers, GS1 element strings, HS-code triage. Deterministic, signed, priced at the floor.
x402 verified · Verified on /v1/gtin/checkdigit · $0.004 · $0.004–$0.05 USDC/request · 9 endpoints · Verification · base network · x402 protocol
How to call this API
Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.