The Mbientlab Android SDK by Mbientlab can be used for developers to integrate connectivity features into applications such as routing sensor data, accelerometer, and data processor. See the API documentation available at https://github.com/mbientlab/Metawear-AndroidAPI
We have seen an explosion in the number of APIs that are now available to developers. It seems like almost everyone has one and those that don't are scrambling to get one. The focus now is clearly not on just having an API, but having a "great API." Two excellent presentations from Cloudstock, held earlier this month, give you an overview on the current state of the API market and tips on what makes a great API.