FiatLink: A Lightning-Fiat Standard For Bitcoin On and Off Ramps

FiatLink is a free and open source API specification for bitcoin on and off ramps. The goal of this project is to provide a unified API specifications for Fiat on-ramps to create interoperability and easier integration of multiple on and offramps into apps.

https://www.nobsbitcoin.com/breez-introduces-fiatlink/