The Voten API is organized around REST. It can be used to build non-automated, high-quality apps and services that interact with Voten platform. Needless to say, the platform itself is open-source, meaning you can send PRs and open issues in case needed.
After our second beta release in January, our most focus is on completing the public API to move on to the mobile apps. In case there's something you need from this API but hasn't implemented yet, or if you think it requires any kind of modification, just discuss it at #votendev channel.
There's a limit of 120 hits per minute; which is more than enough to create any kind of application.
What exactly can I build using the API?
We're already using this very same API for our web client, and we're about to start mobile apps on top of it. Thus there's pretty much a lot you can build with it.
However, if there's something you need that the current API does not satisfy, you may submit a request for it to #votendev.