post
https://secure.mintpayments.com/mpay/v5/surcharge
Calculate surcharge and additional fees that will be applied to a transaction.
This endpoint is optional in the payment workflow. Use it when you need to display
surcharges to the customer before processing the payment. If your payment process
does not accommodate this step, you can directly call the 'purchase' endpoint which
will automatically calculate and apply surcharges.
The response contains all additional fees and extra charges that will be added to
the total cost of the transaction.