A documentação da API está disponível em inglês.

YouTube APIs

4 endpoints returning YouTube data as JSON. They use the same API key, response envelope and credits as the rest of the API (see the API reference), and each request costs 1 credit.

EndpointDescription
/youtube/channelGet a YouTube channel's profile, videos, Shorts, playlists and posts.
/youtube/commentsRead public YouTube video comments with pagination.
/youtube/searchSearch YouTube videos, channels, playlists and Shorts.
/youtube/videoGet a public YouTube video title, description, channel, and view count.