SparkLabs API in progress:
wasteof uses post requests for auth and posting and commenting, i know this 100%. Get requests are used for retrieval of post, comment, user and more information.
that literally shows my point, it uses GET to get data about the currently logged in user, which you need a token for in the headers
Logs you into an account. (Returns an authorization token)
POST /session
After you do this, you can GET the info about already logged in user(that login used POST. I quoted its docs)