The NextGenPSD2 Framework offers a modern, open, harmonised and interoperable set of Application Programming Interfaces (APIs) as the safest and most efficient way to provide data securely. The NextGenPSD2 Framework reduces XS2A complexity and costs, addresses the problem of multiple competing standards in Europe and, aligned with the goals of the Euro Retail Payments Board, enables European banking customers to benefit from innovative products and services (‘Banking as a Service’) by granting TPPs safe and secure (authenticated and authorised) access to their bank accounts and financial data.

The full technical specifications can be found here: https://developer.xs2a.unicreditbank.lu/product (logging into the sandbox is mandatory prior to accessing the full specifications).