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Facebook Ad Library
GET /v1/ad-library/facebook/ad-transcript

Facebook Ad Transcript API

Get a Meta Ad Library ad's creative text — headline, body, CTA, and landing URL as a transcript-style payload.

2 credits per request
Try in PlaygroundGet your API key — freeRead the docs
TL;DR
Get a Meta Ad Library ad's creative text — headline, body, CTA, and landing URL as a transcript-style payload. The Facebook Ad Transcript API (Facebook Ad Library) is a single authenticated GET request to /v1/ad-library/facebook/ad-transcript that responds with clean JSON and costs 2 credits. Pass cache=true for a free 24h cache hit; default is always fresh. Start with 100 free credits — no credit card.

What is the Facebook Ad Transcript API?

Paste a Meta Ad Library ad URL or ad ID and get the creative copy as structured transcript text (headline, body, CTA, landing URL). Flat 2 credits per call.

What you get

  • Full transcript text with start/end timestamps when available
  • Auto-detected language and segment count
  • AI audio transcription fallback when no captions exist
  • Clean JSON ready for search, subtitles, or AI pipelines

Try it

Open in Playground

Fill in the parameters below and copy a ready-to-run request, or open the live Playground to run it against your account (no API key paste).

Parameters

Sign in to run live
curl "https://api.captapi.com/v1/ad-library/facebook/ad-transcript?url=https%3A%2F%2Fwww.facebook.com%2Fads%2Flibrary%2F%3Fid%3D317161109571794" \
  -H "Authorization: Bearer capt_live_..."
# or: -H "x-api-key: capt_live_..."

Edit the parameters and the code updates instantly. Switch languages and hit copy.

Example response

{
  "success": true,
  "data": {
    "platform": "facebook_ad_library",
    "url": "https://www.facebook.com/ads/library/?id=317161109571794",
    "adId": "317161109571794",
    "transcript": "headline: Voting Information Center\nbody: The Voting Information Center—one-tap voting registration information from election experts and authorities in one place.\ncta: Learn more\nlandingUrl: http://facebook.com/votinginformationcenter",
    "transcriptSegments": [
      {
        "speaker": "headline",
        "text": "Voting Information Center",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "body",
        "text": "The Voting Information Center—one-tap voting registration information from election experts and authorities in one place.",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "cta",
        "text": "Learn more",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "landingUrl",
        "text": "http://facebook.com/votinginformationcenter",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      }
    ],
    "wordCount": 25,
    "segments": 4,
    "advertiser": {
      "id": "108824017345866",
      "name": "Meta",
      "url": "https://www.facebook.com/Meta/",
      "logo": "https://scontent-dfw5-2.xx.fbcdn.net/v/t1.6435-9/119568341_200337161527884_7846459746434232698_n.png?stp=dst-png_s60x60&_nc_cat=100&ccb=1-7&_nc_sid=c53f8f&_nc_ohc=ZqrAiU5uA1sQ7kNvwHsXpf9&_nc_oc=AdqVVq_tCCm9QfdHEQa5d82UKJTt9DT4LxrW9m95vTx7VJLcyuQH74gIZv0WeiJgIfo&_nc_zt=23&_nc_ht=scontent-dfw5-2.xx&_nc_gid=oKi5rqU7-78Y6XFLpAVqvA&_nc_ss=79289&oh=00_AQDIgONmGu5lj1i0jpr_nH9fjb7afatDtlB-wsXtBQNtZQ&oe=6A8F324E"
    }
  }
}

Billing metadata is returned in response headers: X-Captapi-Credits (credits charged), X-Captapi-Cache (hit or miss), and X-Captapi-Source. Failed requests (4xx/5xx) are never charged. See the full list of error codes in the error reference.

Response structure

A successful call returns success, cached, creditsUsed, and a data object with the following fields:

Top-level fields

  • platformPlatform identifier for this response (matches the endpoint's platform).
  • urlCanonical URL of the item.
  • adIdAd id. Example: "317161109571794".
  • transcriptComplete text transcript (file-upload endpoints). Timed caption/ASR endpoints use text instead.
  • wordCountTotal number of words in the transcript (file-upload endpoints).
  • segmentsTimed caption/ASR: array of {text,startMs,endMs}. File-upload video-transcript: segment count. Sponsor endpoints: sponsor segment list.

Transcript segments

Each item in transcriptSegments contains:

  • speakerSpeaker label for the segment.
  • textText content.
  • startStart time in seconds.
  • durationDuration when present — prefer durationSeconds (number) and durationText on endpoints that expose both.
  • timestampHuman-readable timestamp (MM:SS format).

Advertiser

The advertiser object contains:

  • idStable platform ID for the item.
  • nameName of the item or account. On profile endpoints: deprecated alias of displayName (one release).
  • urlCanonical URL of the item.
  • logoLogo image URL.

Parameters

NameTypeRequiredDescription
urlstringYesMeta Ad Library ad URL or ad ID. The URL platform must match this endpoint's platform. Do not pass cross-platform URLs, e.g. YouTube to TikTok, Instagram to Facebook, LinkedIn to X/Twitter, or Pinterest to Rumble.
cachebooleanNoSet true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh. Envelope includes cached + cachedAt on hits.

Authentication: send your key as Authorization: Bearer capt_live_.... A typical call costs 2 credits. Pass cache=true for a free 24h cache hit; default is always fresh.

Using an AI agent? This endpoint is the MCP tool facebook_ad_library_ad_transcript via @captapi/mcp. Set it up →

How it works

  1. 1. Sign up — get 100 free credits, no card required.
  2. 2. Create a key from your dashboard.
  3. 3. Send one request to /v1/ad-library/facebook/ad-transcript and parse the JSON response.

Use cases

Accessibility

Provide captions and transcripts for hearing-impaired users.

Content Analysis

Analyze spoken content for keywords, topics, and sentiment.

Search & Discovery

Make video content searchable by text.

Content Creation

Extract quotes and key phrases from videos.

Language Learning

Provide text alongside audio for language learners.

Research

Analyze large volumes of video content efficiently.

SEO

Extract text content for search engine optimization.

Frequently asked questions

What does the Facebook Ad Transcript API do?+

The Facebook Ad Transcript API lets you extract the full, timestamped transcript from a public Facebook Ad Library ad using one GET request to /v1/ad-library/facebook/ad-transcript. It returns clean JSON — no OAuth or infrastructure setup required.

How many credits does the Facebook Ad Transcript API cost?+

Each successful call costs 2 credits. Pass cache=true to serve from the 24h cache (0 credits on hit); default is always fresh. Hits include cached + cachedAt. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d. Failed or empty results are never charged.

Do I need a Facebook Ad Library API key or OAuth?+

No. A single Captapi key works across every platform Captapi supports — YouTube, TikTok, Instagram, Facebook, Twitter/X, Reddit, Threads, Bluesky, Pinterest, LinkedIn, Rumble, Spotify, Kwai, and more. We handle proxies, rate limits, retries, and authentication for you.

Is the Facebook Ad Transcript API suitable for production use?+

Yes. It is a stable REST endpoint with predictable JSON and automatic retries. Pass cache=true to serve from the 24h cache (0 credits on hit); default is always fresh. Hits include cached + cachedAt. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d. Use it for analytics, monitoring, and content automation.

More Facebook Ad Library APIs

Facebook Ad Library Search APIFacebook Company Ads APIFacebook Ad Library Search Companies APIFacebook Ad Details API

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