Facebook Summarizer API
Turn any Facebook video into an AI summary with key points, topics, and sentiment.
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 shared cache (0 credits on hit); default is always fresh.
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
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
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 the concept of a galaxy cluster, which consists of multiple galaxies grouped together. Specifically, it focuses on a galaxy cluster made up of two sub-clusters of similar mass that are currently interacting and separating in a complex manner. This dynamic relationship is significant for scientific study, as it provides insights into the behavior of galaxies in close proximity to one another. Eventually, these sub-clusters are expected to merge, further contributing to our understanding of galaxy formation and evolution.\n\nAdditionally, the video highlights the phenomenon of gravitational lensing, where the concentrated mass of the cluster bends light due to its gravitational pull. This effect allows astronomers to observe distant and faint background galaxies and stars that would otherwise be invisible, enhancing our ability to study the universe and its structures. The interplay of these two sub-clusters not only illustrates the chaotic nature of cosmic interactions but also serves as a valuable tool for astronomical research.",
"keyPoints": [
"A galaxy cluster consists of multiple galaxies grouped together.",
"The featured cluster contains two sub-clusters of similar mass interacting and separating.",
"The relationship between the sub-clusters is complex but crucial for scientific study.",
"Gravitational lensing occurs due to the cluster's mass, bending and focusing light.",
"This lensing effect allows the observation of faint background galaxies and stars.",
"The merging of the sub-clusters will provide further insights into galaxy evolution."
],
"topics": [
"galaxy cluster",
"gravitational lensing",
"cosmic interactions",
"astronomy",
"galaxy formation",
"space science"
],
"sentiment": "neutral"
}
}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 (e.g. youtube, instagram).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
| Name | Type | Required | Description |
|---|---|---|---|
| url | string | Yes | Public 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. |
| cache | boolean | No | Set true to serve from the 24h response cache. Default false — always fetch fresh data. |
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.
How it works
- 1. Sign up — get 100 free credits, no card required.
- 2. Create a key from your dashboard.
- 3. Send one request to
/v1/facebook/summarizeand 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 shared cache (0 credits on hit); default is always fresh. 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 proxies, rate limits, retries, and authentication for you.
Which AI model powers the summaries?+
Summaries are generated with GPT-4o-mini for a strong balance of quality, speed, and cost, built on top of 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 shared cache (0 credits on hit); default is always fresh. Use it for analytics, monitoring, and content automation.
More Facebook APIs
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