estimate_x402_outbound_payment

Mutates state: Creates a durable outbound intent; moves no funds

{
  "x402_url": "https://example.com/paid-resource",
  "request": { "method": "GET" },
  "pay_with": {
    "asset": { "type": "fiat", "symbol": "USD" },
    "payment_instrument": "bank_transfer"
  }
}

The tool fetches the exact external request, validates a supported Worldchain USDC requirement, and returns an intent ID, fiat funding amount, fees, pay-to address, and confirmation deadline. Current public execution supports live fiat on-ramp funding only.

Overview

Setup and configuration

Tool reference

Agent guides

Advanced

Troubleshooting

estimate_x402_outbound_payment