{"protocol":"x402","enabled":true,"compatible":true,"flow":["client requests resource","server may return 402 Payment Required with machine-readable terms","client pays using supported rail","client retries with payment proof","server returns resource and InfraPulse may issue signed receipt"],"seller_type":"service + trust layer","positioning":{"payment_transport":"x402-style payment-required flow","infrapulse_role":"trust, metering, receipts, approval policy, and verification"}}