This client library is a Java Library for the Postmaster API. The Postmaster API is a platform that helps developers integrate parcel shipping into applications or websites. Postmaster supports domestic and international shipping.
Uber today opened the UberRUSH API to all developers. Using the API, developers can integrate UberRUSH, the transportation company's on-demand delivery service, into their applications to handle pick-up and delivery of pre-paid goods. In January of this year, Uber launched a private UberRUSH API.
As various services like Facebook deal with competitors by packing more functionality into their apps, those apps are increasingly experiencing usability issues. In the old days of the API economy, outside developers could leverage a service's APIs to build something better. But those days are gone.