Return the curated, grouped sections shown on a channel page — titled shelves of videos, playlists, shorts, or featured channels, in the channel's own order. This is the grouped-page view, distinct from the flat /channel/videos and /channel/playlists lists.

Use channel (@handle, URL, or UC... ID). tab selects which page: featured (default, the Home page), podcasts, or releases — the latter two exist only on channels that have them (an empty results list otherwise).

Freshness: cached for 5 minutes.

Credit cost: 1 credit per request.