TikTok Music Posts API

List TikTok videos that use a specific sound — caption, author, exact engagement, canonical hashtags, and mentions, with cursor pagination.

Paste a TikTok music/sound URL and get the public videos that use that sound as structured JSON, straight from TikTok's own music feed (native only — there is no backup path). TikTok serves this feed in short pages of a few videos each, so a call returns what lands within ~35s plus a nextCursor; keep paging to collect more. pagination says where you stand: cursor (more pages — hasMore true), end (TikTok's feed for this sound is exhausted — hasMore false), unavailable (cannot tell — hasMore null, never a false "no more posts"). Coverage is limited to what TikTok's public feed exposes, which can be far below the count shown in the app. Every row has one schema: permalink is always url, author is the full eight-key card, and caption / publishedAt / thumbnailUrl / durationSeconds / mediaUrlsExpireAt / hasWatermark / locationCreated are always keyed. Unread engagement counters are null with *IsApproximate: null — never 0 flagged exact. limit is 1–50 (outside that is a 400). When TikTok's feed refuses us, the answer is 503 UPSTREAM_UNAVAILABLE with Retry-After and the real elapsed time (reason native_unavailable, page_miss or timeout) at 0 credits. Photomode covers are mediaType=photo with a /photo/ permalink. Flat 2 credits per successful call.

Docs: https://captapi.com/apis/tiktok-music-posts