Payment Envelope Validate
payment_envelope_validateRead-onlyIdempotent
Validate a captured x402 402 payment envelope (PAID $0.25)
VALUE: Whether a signed payment envelope is well-formed, unexpired and for the right resource — catch a bad payment before it settles.
PRICE: $0.25 USDC per call.
HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the X-PAYMENT header, then retry the same call. An unpaid call returns a payment_required payload with the amount, asset, network and payTo already filled in. The synthex-x402 SDK (PyPI and npm) does the 402 -> sign -> retry loop in one call.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| envelope | No | ||
| now_epoch | No | ||
| resource_url | No |