Clear Channel has launched an API for its iHeartRadio service that will open it up to external developers. This follows similar moves from Rdio and Spotify in recent times, with the latter having APIs for web and mobile developers, as well as its recently-launched apps platform. Developers using the iHeartRadio API will be able to tinker with features including live radio broadcasts, personal radio stations and social features. “Opening our API will unlock exciting opportunities to enrich the unique, combined live and custom radio experience that only iHeartRadio provides,” says president Brian Lakamp in a statement. The company is showing off case studies of its API on its developer site, including Xbox 360, Toyota Entune, Yahoo TV and Grace Digital. It’s currently unclear what restrictions there are, if any, on commercial use of the API and subsequent revenue sharing.