Kwai User Posts API

Kwai profile posts — caption ("" when none), engagement, mp4 + transcript (~1 credit/post).

Pass a Kwai profile URL or @handle and get that creator's public posts as clean JSON. Each post: id/url, text (the post caption only — empty string when none; never Kwai's SEO title / "Áudio original criado por …" boilerplate), hashtags[] (always present — [] when the caption has no tags), publishedAt, durationSeconds, thumbnailUrl, videoUrl with videoType ("mp4" or "hls"), mediaUrlsExpireAt parsed from the signed CDN tag=, engagement{views,likes,comments,shares}, and transcript when Kwai's JSON-LD auto-captions are present (duplicate merged tracks are deduped). Author{id,username,displayName,avatar,url} is returned once at the top — not repeated on every row. Envelope uses url (the requested profile) — same key as /kwai/post and /kwai/profile. HARD PAGE LIMIT: Kwai's public web only SSR-embeds a first-page window of posts (typically a handful — observed ~6 on large accounts), not the full postCount from /kwai/profile. hasMore/nextCursor page within that window; hasMore=false means the window is exhausted, not that the account has no more posts upstream. ~1 credit per post returned (min 2; default limit 20 → ~20 credits). Transcript is included when Kwai publishes it — not a separate transcription bill. Shares _normalize_post with /kwai/post.

Docs: https://captapi.com/apis/kwai-user-posts