The content type of the audio. Currently the API delivers audio/mpeg, audio/ogg, and audio/webm.
Details about the pronunciation audio.
The gender of the voice actor.
Vocabulary being pronounced in kana.
A unique ID shared between same source pronunciation audio.
A unique ID belonging to the voice actor.
Humanized name of the voice actor.
Description of the voice.
The location of the audio.
Information pertaining to pronunciation audio for a vocabulary subject.
See
https://docs.api.wanikani.com/20170710/#subjects