Google Ad Details API
Get a Google Ads Transparency ad — creative, advertiser, and delivery fields as structured JSON.
GET request to /v1/ad-library/google/ad-details that responds with clean JSON and costs 17 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 Google Ad Details API?
The Google Ad Details API lets you fetch full metadata and key stats for Ad Library google ad details 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
- Google Ad Details fields as clean structured JSON
- IDs, URLs, and titles where the platform exposes them
- Engagement or popularity signals when available
- Stable IDs for joining with other endpoints
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/ad-library/google/ad-details?creative_id=https%3A%2F%2Fadstransparency.google.com%2Fadvertiser%2FAR16735076323512287233%2Fcreative%2FCR10754779872199966721" \
-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": "google_ad_library",
"id": "CR08395356613392728065",
"url": "https://adstransparency.google.com/advertiser/AR18378488041124659201/creative/CR08395356613392728065",
"text": "Discover {KeyWord:Nike Shoes} Online At Nike.com. Shop The Official Nike Site.",
"headline": "{KeyWord:Nike Vomero}",
"landingUrl": "nike.com",
"adFormat": "text",
"firstShown": "2025-09-19T13:04:37.000Z",
"lastShown": "2026-07-23T06:18:08.000Z",
"impressions": "7000-8000",
"country": "Malta, United Arab Emirates, Cyprus, Belgium, United Kingdom, Czechia, Hungary, United States, Iceland, Ireland, Italy, Sweden, India, Spain, Greece, Croatia, Bulgaria, Portugal, Denmark, Lithuania, Poland, Netherlands, Germany, Australia, Norway, France, Romania",
"advertiser": {
"id": "AR18378488041124659201",
"name": "Nike Retail BV",
"url": "https://adstransparency.google.com/advertiser/AR18378488041124659201"
},
"media": []
}
}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).idStable platform ID for the item.urlCanonical URL of the item.textText content.headlineProfile headline.landingUrlLanding page the ad links to.adFormatFormat of the ad creative.firstShownWhen the ad was first shown.lastShownWhen the ad was last shown.impressionsEstimated ad impressions.countryCountry name (e.g. Mexico, United States).mediaMedia attached to the item.
Advertiser
The advertiser object contains:
idStable platform ID for the item.nameName of the item or account.urlCanonical URL of the item.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| creative_id | string | Yes | Google Ads Transparency URL containing AR... advertiser and CR... creative IDs. |
| country | string | No | Two-letter ISO country code. Default US. |
| 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 17 credits. Pass cache=true for a free 24h cache hit; default is always fresh.
google_ad_library_ad_details via @captapi/mcp. Set it up →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/ad-library/google/ad-detailsand parse the JSON response.
Use cases
Analytics
Track views, likes, and engagement over time.
Competitor Monitoring
Benchmark the performance of other creators.
Dashboards
Power reporting and BI with real metadata.
Content Curation
Filter and rank videos by performance.
Frequently asked questions
What does the Google Ad Details API do?+
The Google Ad Details API lets you fetch full metadata and key stats from a public Ad Library ad using one GET request to /v1/ad-library/google/ad-details. It returns clean JSON — no OAuth or infrastructure setup required.
How many credits does the Google Ad Details API cost?+
Each successful call costs 17 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 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 Google Ad Details 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 Ad Library APIs
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