YouTube Search Hashtag API reference

Hashtag to search for without the # symbol

Search for all types of content or only shorts

Set to engagement, channel, or both (engagement,channel) to fill more of every row in this one call. engagement fills post.engagement.views, .likes and .comments, post.content.duration_seconds, author.id and post.author.display_name where the row lacks them, and replaces a date derived from a label such as "4 months ago" with the exact publish time (removing post.ext.published_precision). channel puts the channel's subscriber count on post.ext.author_followers (YouTube's own figure, which it rounds to three significant figures above 1,000) and fills the channel's post.author.display_name, .avatar_url and .username where missing. Send both to cover rows that arrive without a channel id: the video join supplies it and the channel join then uses it. Each join adds 0.2 to 0.7 seconds on a fresh page (one lookup per 50 ids, never more than 8 seconds).

Exact publish dates are on by default and free. Set to false to skip the lookup: rows then carry the supplier's date estimate (a day-granular or coarser label truncated to midnight UTC), marked by post.ext.published_precision and post.ext.published_label, and the listing title, marked by post.ext.title_maybe_translated.

Only rows published on or after this date: YYYY-MM-DD (midnight UTC) or an ISO 8601 timestamp. Rows older than it are left off each page. This list is not in date order, so the walk does not stop at the date: keep following next_cursor, and each page costs what a page costs even when every row on it is filtered out. A row with no date is kept.

Only rows published on or before this date: YYYY-MM-DD (that whole UTC day is included) or an ISO 8601 timestamp. Newer rows are left off each page and the walk does not stop, so older pages follow. A row with no date is kept.

Keep only rows with at least this many views (post.engagement.views). A row whose view count is unknown is discarded, so every returned row meets the floor.

Keep only rows published within this many days (post.published_at), 1 to 3650. A row with no date is discarded.

views: return the kept rows ordered by view count, highest first, across every page walked. Rows without a view count go last.

1 to 5 (default 1). Walk up to this many pages in one call and return the rows from all of them (after any filter). Each page walked is billed as one call to this endpoint; the whole walk counts once against your rate limit.

The pagination.next_cursor from the previous page, sent back unchanged. Omit it for the first page.

Set to 1 to get the price of this call without making it: data.dry_run carries credits_min and credits_max. Nothing is charged.