confirm_x402_outbound_payment

Mutates state: Yes
Confirmation: confirmed_by_user=true

{
  "x402_outbound_intent_id": "x402_...",
  "pay_with": {
    "asset": { "type": "fiat", "symbol": "USD" },
    "payment_instrument": "bank_transfer"
  },
  "confirmed_by_user": true,
  "client_quote_id": "quote_..."
}

Call only after showing the external USDC requirement, exact fiat amount, fees, pay-to address, and confirm_before. Follow the returned on-ramp instruction exactly. Do not construct a payment signature locally.

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confirm_x402_outbound_payment