The Defiant·
AI-Agent Payments Explained: Mastercard Agent Pay, AP2 and x402

AP2 records spending authority, while x402 carries payment requests. Mastercard’s machine-payment pilot shows why a signed voucher and final settlement are different steps.
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AP2 records spending authority, while x402 carries payment requests. Mastercard’s machine-payment pilot shows why a signed voucher and final settlement are different steps.