checkout

Get USDC Authorization Message (EVM only)

Changed on

Gets the USDC authorization message to be signed by the customer for dual-source payments. The signed message allows the customer's USDC to be used alongside credit card payment.

This is only necessary for EVM chains when using customer USDC + credit card payment.

post/checkout/evm/usdc-authorization

Request

  • Base URL
    https://api-sandbox.coinflow.cash/api
  • URL
    https://api-sandbox.coinflow.cash/api/checkout/evm/usdc-authorization
  • Auth
    API key in header x-coinflow-auth-session-key

Request body

paymentIdstring

Optional payment ID for generating unique nonce

Response

Ok

messagestring required

EIP-712 message to sign

Changes

  • 81b590227b14Revision changes
    • warning

      deleted the header request parameter x-coinflow-auth-session-key

    • info

      the endpoint scheme security sessionKey was added to the API

  • 66b771d6d31fRevision changes
    • info

      api operation id get-usdc-authorization-message removed and replaced with checkout_GetUsdcAuthorizationMessage