Facebook
GET /v1/facebook/summarize

Facebook Summarizer API

Turn any Facebook video into an AI summary with key points, topics, and sentiment.

4 credits per request
TL;DR
Turn any Facebook video into an AI summary with key points, topics, and sentiment. The Facebook Summarizer API (Facebook) is a single authenticated GET request to /v1/facebook/summarize that responds with clean JSON and costs 4 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 Summarizer API?

The Facebook Summarizer API lets you generate an AI summary with key points and topics for Facebook summarizer with a single REST call. No OAuth, no infrastructure to maintain, and no platform SDKs — send the request, get clean structured JSON back. Pass cache=true to serve from the 24h cache (0 credits on hit); default is always fresh. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d.

What you get

  • 2–3 paragraph AI summary
  • 4–8 bullet key points and detected topics
  • Overall sentiment and tone
  • Built on the transcript under the hood

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/facebook/summarize?url=https%3A%2F%2Fwww.facebook.com%2FNASA%2Fposts%2Fpfbid0TBwRTPkxfaLhYBjfsK1xApVksSVHddNrpqUqcqNsKxVvKjqT6dAG8HnxWGA3odp5l" \
  -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",
    "url": "https://www.facebook.com/NASA/posts/pfbid0TBwRTPkxfaLhYBjfsK1xApVksSVHddNrpqUqcqNsKxVvKjqT6dAG8HnxWGA3odp5l",
    "summary": "The video discusses a galaxy cluster composed of two sub-clusters that are in a complex process of interaction and separation. This dynamic relationship is described as 'messy,' highlighting the chaotic nature of their gravitational interactions. Eventually, these sub-clusters are expected to merge, providing valuable insights into the region's structure and behavior.\n\nAdditionally, the video explains the phenomenon of gravitational lensing, where the intense mass of the cluster bends light due to its gravity. This effect magnifies and enhances the brightness of distant objects, allowing astronomers to observe galaxies and stars that would otherwise be too faint to detect. The interplay of these cosmic forces not only illustrates the complexity of galaxy clusters but also serves as a powerful tool for astronomical research.",
    "keyPoints": [
      "A galaxy cluster consists of multiple galaxies grouped together.",
      "The discussed cluster contains two sub-clusters with similar mass in a complex interaction.",
      "The relationship between the sub-clusters is described as messy and complicated.",
      "Gravitational lensing occurs due to the cluster's concentrated mass, bending light.",
      "This lensing effect allows for the observation of faint background galaxies and stars."
    ],
    "topics": [
      "galaxy cluster",
      "sub-clusters",
      "gravitational lensing",
      "astronomy",
      "cosmic interaction"
    ],
    "sentiment": "neutral"
  }
}

Billing metadata is returned in response headers: X-Captapi-Credits (credits charged), X-Captapi-Cache (hit or miss), and X-Captapi-Request-Id (include it when contacting support). Where the response has a source field, it names the path that served the data: native, extended, cache or asr. 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 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.
  • summaryAI-generated summary of the content.
  • keyPointsThe most important takeaways.
  • topicsDetected topics and themes.
  • sentimentOverall tone (positive, neutral, negative).

Parameters

NameTypeRequiredDescription
urlstringYesPublic Facebook video or post URL. 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.

Authentication: send your key as Authorization: Bearer capt_live_.... A typical call costs 4 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_summarize 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/facebook/summarize and parse the JSON response.

Use cases

Content Triage

Decide what's worth watching without watching it.

Newsletters & Digests

Auto-generate summaries for roundups and emails.

Research

Condense long videos into key points at scale.

SEO

Generate descriptions and meta content from videos.

Social

Draft captions and posts from video content.

Frequently asked questions

What does the Facebook Summarizer API do?+

The Facebook Summarizer API lets you generate an AI summary with key points and topics from a public Facebook video using one GET request to /v1/facebook/summarize. It returns clean JSON — no OAuth or infrastructure setup required.

How many credits does the Facebook Summarizer API cost?+

Each successful call costs 4 credits. Pass cache=true to serve from the 24h cache (0 credits on hit); default is always fresh. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d. Failed or empty results are never charged.

Do I need a Facebook 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 access, rate limits, retries, and authentication for you.

Which AI model powers the summaries?+

Summaries are generated by an AI model from the transcript.

Is the Facebook Summarizer 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. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d. Use it for analytics, monitoring, and content automation.

More Facebook APIs

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Facebook Summarizer API — Captapi