Open L2 API (OLA) project is an Amadis initiative aiming to normalize how to interact with any L2 stacks. It is aligned on Nexo standard, in particular on Nexo Fast. OLA provides a simple set of primitives that fits into Nexo’ payment application’s logic. Its specification has been led in conjunction with Arkos project proposing a generic payment library independent from platform, merchant, and acquirer contexts.
See OLA API or Developer’s Guide.