402Proof Adds x402 Pay-Per-Call Payments on XRP Ledger and Xahau

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Script Master Labs has published a starter kit showing how APIs can accept per-call x402 payments in XRP or XAH on the XRP Ledger and Xahau. The kit routes payments through its 402Proof facilitator, which verifies and settles native Payment transactions on-chain. Access is partner-keyed, with keys issued to known sellers scoped to their wallet, origin, asset and amount limits. Fees differ by network: on XRPL a $0.01 per-settlement fee accrues to a merchant ledger with loyalty discounts, while on Xahau a flat 0.01 XAH fee is collected in a second payer-signed transaction. The company says 402Proof is currently the only Xahau x402 facilitator it could find, though the rail remains early.

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