Does Google offer a REST or Javascript API for creating and editing slides? I've been able to figure out how to interact with sheets and most of the other services offered as part of Docs/Drive, but haven't had any luck with Slides.
If there is no API, I'd be willing to create files directly myself, but I haven't been able to find any documentation on a Slides file format.
The Google Slides API was launched on 11/9/2016. It provides the ability to read, create, and edit Google Slides presentations.