x402

x402 is 100% of the design: settlement after the gate, and a per-resolve meter on the registry's truth tools. An order intent settles in USDC on Base; the receipt is signed and carries the reason code and the rule-set version the gate returned.

The payments door of the family is peptides-x402.ai: the settlement door and the meter. The registry's truth tools are metered there per resolve. The hub carries no wallet; a key here is a signature.