I have a game developed with the Alexa Skill Kit for the Amazon Echo (Starlanes). I've got my own leaderboard, and I'm thinking about adding achievements. However I'd rather use GameCircle and spend my time improving gameplay instead of re-inventing the wheel. However when I looked into GameCircle, it only appears to be available in libraries specifically for targeted mobile devices. My Alexa Skill is implemented in Java and runs on a server. Is there a REST (or standalone Java) API for GameCircle that I missed? If it's not available in this format, then this is a feature request to do so. It will be a lot simpler if I can keep my entire application inside the Amazon ecosystem.