Facebook Post & Reel Details API

Facebook post or Reel — caption, engagement, author id, video{} playback, and music when Facebook exposes them.

Paste a Facebook post or Reel URL and get clean JSON: caption (no description twin), publishedAt, fetchedAt, engagement (likes / comments / views / shares always keyed — null when unknown or not a video; never invent shares:0), author (including stable author.id when present), and video{} as the only playback block (id / url / sdUrl / hdUrl / width / height / captionsUrl). durationSeconds and thumbnailUrl stay on the post for cards. No flat videoUrl / videoSdUrl twins. feedbackId is base64("feedback:" + id) — the token /facebook/comments accepts; fully derivable from id. music when Facebook exposes it. Each keyed likes/comments/shares/views count carries *IsApproximate (false when the count is null). facebook.com/share/<id> links (the mobile Share button — /share/, /share/p/, /share/r/, /share/v/) are resolved automatically: a cheap redirect first, then a full page render that reads Facebook's own og:url/canonical; the share→canonical mapping is cached 30 days so a repeat paste is instant. 400 UNRESOLVED_SHARE_LINK only when Facebook refuses to reveal the canonical URL — never 14–23s of NOT_FOUND for a shape we did not parse. A page URL is 400 WRONG_RESOURCE_TYPE. A fetch or parse miss is 503 FACEBOOK_UNAVAILABLE (retryable) — we do not 404 a URL unless Facebook itself answered 404. Note: for some Reels, the view count on the individual post page can be null or lower than the public Reels grid badge — use Facebook Profile Reels and match by post id if you need that badge count. Flat 2 credits per call.

Docs: https://captapi.com/apis/facebook-details