Thought I'd make a quick info thread for people trying to get their hands on the API. Things are in early stages right now, and most resources are undocumented, but this should give you a good head start. I'm working on documentation over at http://docs.kitsu17.apiary.io/. Note that most of the resources aren't in the documentation yet, and the
/api/17 namespace does not exist. Only
/api/edge is available for now. I also have some generated Paw and Postman files. The API follows the JSONAPI standard, which you can read up on here.
As for authentication right now its standard Resource Owner Password OAuth (scroll down a bit to the Password section). The endpoint is
https://kitsu.io/api/oauth/token, and you can use the following public credentials until app registration is available. These are also included in the environment variables for the Paw/Postman files.
If you're trying to get a head start on something that isn't in the docs yet, you can see the list of routes in this spreadsheet where I'll be highlighting rows as I document them. Feel free to ask me if you have any questions.