usdc tag

Publications

Ordered by date created, newest first. Page 1 of 1; 3 publications total.

How an x402 payment works, step by step, from a real 402 response 2026-10-21 · article
Decode a live x402 v2 challenge header by header: the 402, PAYMENT-REQUIRED, the signed EIP-3009 authorization, settlement and the receipt.
What an x402 seller should do that the spec doesn't require 2026-10-21 · article
Eight seller behaviors beyond the x402 spec, each running on a live endpoint: refuse before charging, recover purchases, pin payees, one catalog.
Per-byte x402 pricing: deterministic workload bands in atomic USDC 2026-10-14 · article
How a seller prices x402 calls by canonical JSON size: $0.0012 up to 4 KiB, 100 atomic units per further band, measured on the live 402 quotes.