giftcard_buy API — Pay Per Call with USDC on Base
Buy a digital gift card code (Foot Locker, Target, AMC, 1000+ brands) with USDC on Base. Search the catalog free with ?q=, then pay face value + fee via x402 — code delivered instantly. Part of the x402 Gateway — dynamic per call, settled in USDC on Base. No accounts, no API keys: agents pay per request via the x402 protocol.
How payment works
Send a POST to ` without a payment header and the API replies 402 Payment Required with an x402 challenge (payTo address, USDC amount, Base network). A paying agent signs the USDC payment and retries with the X-PAYMENT header — settlement is verified on-chain in seconds and the API response returns with an X-PAYMENT-RESPONSE` receipt.
Example call
Browse every pay-per-call API on the all APIs page, or inspect the machine-readable service card and OpenAPI spec.