Suncorp Bank Gateway (Mastercard) Payments API
Suncorp Bank's merchant payment gateway, a Suncorp-branded instance of Mastercard Payment Gateway Services (MPGS). It offers merchants a REST/JSON (and NVP) API plus hosted checkout, hosted batch, and mobile SDKs to authorize, capture, refund and tokenize card payments. Documented publicly at suncorp.gateway.mastercard.com/api/documentation (docs live, HTTP 200); the REST API itself is credentialed per-merchant (HTTP 401 without merchant credentials) and Mastercard publishes no downloadable OpenAPI/Swagger for MPGS, so this entry is humanURL-only with no machine-readable spec (partner/merchant-gated).