Earlier this year, Google informed the world of its API go to market strategy surrounding Project Glass. Google has initiated its strategy with a private beta for the API, as well as an API name: Google Mirror API. The Mirror API, now in beta, will allow developers to create experiences for Google Glass. Google gave a live demonstration and overview of Project Glass and the Mirror API at SXSW.
Payleven, the Square equivalent for the world outside of the US, has launched an API to complement its mobile payment device. Prior to the API, use of Payleven's mobile payment device required downloading the Payleven app (similar to Square's current model). However, the API allows developers to integrate Payleven's functionality within third party apps.