JUMP TOIntegrationRequirementsGetting StartedWhat You'll NeedInitialise WidgetShow Finance OffersEligibility CheckStart CheckoutComplete CheckoutConfirm PaymentReturning CustomersRefund CustomersSecond LenderAdding NewpayeCommerce ModulesEnvironmentsGoing LiveAPIEndpointsAuthenticate credentialspostInitialise FlexPay WidgetpostVerify & start checkoutpostRetrieve checkoutgetReturns public keygetVerify messagepostReturns statusgetUpdate transactionpatchappendicesAPI Error CodesTile PositionsupportContactAuthenticate credentialspost https://dummy-api.staging.host.com/authUsed by API consumers to authenticate.