Up to 50 (platform, handle) pairs → one canonical Author per row, failed handles refunded.

Batch profile lookup for handle vetting. POST a JSON body with an items array of 1-50 { platform, handle, custom_id? } objects (handle accepts an @handle, a bare handle, or a pasted profile URL); returns one row per item: the canonical Author object (same shape as the single GET profile endpoint), a status of ok / not_found / unsupported / error / deferred, the caller's custom_id echoed, and the credits that row cost: in input order. Per-item isolation: one dead or private handle never fails the batch. Billing is per item at each platform's own credit tier (most platforms 1 credit; LinkedIn 5); only successful rows are charged, everything else is refunded. Supported platforms: instagram, tiktok, youtube, twitter, threads, twitch, snapchat, truthsocial, bluesky, kwai, reddit, telegram, linkedin (a member, or a company page as a linkedin.com/company/… URL), facebook. A LinkedIn lookup that is rate limited is retried once and then answered deferred at no charge: re-request it. Never cached. Optionally streams Server-Sent Events when the client sends Accept: text/event-stream. Send include: "posts" (up to 25 items) to add each handle's first page of posts beside its profile: every ok row gains a posts block with the same post rows, next_cursor and has_more as that handle's own post list endpoint (endpoint names it: instagram profile/posts, tiktok profile/videos, youtube channel/videos, twitter user/tweets, threads user/posts, facebook profile/posts, reddit profile/posts, telegram profile/posts, linkedin profile/posts or company/posts; other platforms answer posts.status: "unsupported"). since on the body and stop_at_id on an item stop each page at a date or at a post you already hold, as on those endpoints, and posts.stopped_at says which. Add posts_limit (1 to 100) to walk each handle's post list until that many posts are held: posts.pages is the pages charged and posts.stopped says why the walk ended (limit, end, window, page_cap). include: "posts,about" also returns activity (last_post_at, posts_30d, posts_90d, media_mix) and stats (avg_likes, avg_comments, engagement_rate) on every row, computed from the posts held. Add comments to include (it implies posts) to read the comments of each handle's top posts: the comments_top_posts posts (default 3) with the most comments among the posts walked (a post without a comment count is ranked by views after them, or rank all by views with comments_select_by: "views") each gain comments with items (the same comment rows as that platform's comment endpoint: instagram, tiktok and facebook post/comments, youtube video/comments, twitter tweet/replies, linkedin post/comments, reddit post/comments, threads post/comments), total (the post's comment count), truncated and next_cursor, up to comments_per_post (default 20) per post; the row's comments block gives status (ok, partial, failed, deferred, empty, unsupported) and the credits. One post that fails never drops the row. The profile in data is unchanged.