What is Http 402?
Http 402 explained for crypto payment merchants using Zateway.
Http 402 is an important payments concept. Zateway helps merchants apply it with non-custodial USDT/USDC checkout on Polygon, Solana, Base, BSC, Arbitrum, Optimism, 1% flat fees, and direct-to-wallet settlement.
Why Http 402 matters
Teams evaluating Http 402 usually care about fee drag, settlement speed, and custody risk. Zateway removes intermediary holds so http 402 workflows settle on-chain.
Using Http 402 with Zateway
Create a payment session or payment link, let customers pay in USDT/USDC, verify HMAC webhooks, then fulfill. This operationalizes Http 402 without taking custody of merchant funds.
Implementation checklist
Use sandbox keys first, pick low-fee chains (Polygon/Solana/Base), store tx hashes for audit, and monitor confirmed vs settled states for Http 402-related flows.