API POST endpoint to refresh your credentials. Access this endpoint at https://docs.nexiopay.com/reference/refreshcredentials

API POST endpoint to refund a credit or debit card transaction. Access this endpoint at https://docs.nexiopay.com/reference/refundtransaction

API POST endpoint to refund a transaction using an alternative payment method (APM). Access this endpoint at https://docs.nexiopay.com/reference/refunda...

API POST endpoint to register webhooks for a specific merchant ID, payout account ID, or account ID. These webhooks are callbacks for transactions, payouts,...

API POST endpoint to securely process an alternative payment method (APM) transaction without a browser, such as for merchant-initiated transactions. Ac...

API POST endpoint to process a card transaction through the API. Access this endpoint at https://docs.nexiopay.com/reference/runcardtransaction

API GET endpoint to return an iframe that can be used to securely run a credit or debit card transaction. Access this endpoint at https://docs.nexiopay....

API POST endpoint to securely process an echeck transaction without a browser. Access this endpoint at https://docs.nexiopay.com/reference/runechecktran...

API GET endpoint to return an iframe that can be used to securely process an echeck transaction. Access this endpoint at https://docs.nexiopay.com/refer...

API POST endpoint to securely save a card token using the API or using your own form. Access this endpoint at https://docs.nexiopay.com/reference/saveca...