Cashplus Payment Initiation API
Open Banking Payment Initiation Service Provider (PISP) API conformant to the OBIE Read/Write API Standard, supporting domestic payments, domestic scheduled payments, and domestic standing orders with the customer approving each payment via PSD2 strong customer authentication over FAPI OAuth2/OIDC and mutual-TLS. The harvested OpenAPI is the shared OBIE standard the bank conforms to, not a bank-proprietary contract.