x402 payment facilitator operated by Ultravioleta DAO. Verifies x402 payment authorizations (EIP-3009 and the equivalent primitive on each non-EVM family) and settles them on-chain, so payers spend no gas. Serves 21 mainnet payment networks and 18 testnets across seven chain families, six stablecoins and five payment schemes. It charges no fee and never answers HTTP 402: it is the settlement layer other x402 services point at. Also serves ERC-8004 Trustless Agents identity and reputation, and the Bazaar catalog of x402-priced resources.