The API uses JSON to serialize data. You don't need to specify `.json` at the
end of an API URL.
All of the API endpoints that use the `POST`, `PUT` or `PATCH` method support params in the request body, with `Content-Type``application/x-www-form-urlencoded`, `multipart/form-data` or `application/json`.
## Authentication
Most API requests require authentication, or will only return public data when
