CaptapiCaptapi
Google Ad Library
GET /v1/ad-library/google/ad-details

Google Ad Details API

One Google ATC creative by AR…+CR… — text/headline/impressions + countries[] ISO (not an alias of company-ads).

2 credits per request
Try in PlaygroundGet your API key — freeRead the docs
TL;DR
One Google ATC creative by AR…+CR… — text/headline/impressions + countries[] ISO (not an alias of company-ads). The Google Ad Details API (Google Ad Library) is a single authenticated GET request to /v1/ad-library/google/ad-details 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 Google Ad Details API?

Paste a Google Ads Transparency URL with both AR… advertiser and CR… creative IDs. Unlike company-ads list rows, ad-details adds text, headline, landingUrl, and impressions when ATC publishes them. Response id and advertiser.id always match the request — Nike, Inc. / Nike Retail BV / NIKE SRL are different legal entities and are never swapped. countries[] is ISO-3166 alpha-2 (country is a single ISO only when unambiguous). textIsTemplate is true when Dynamic Keyword Insertion macros like {KeyWord:Nike Shoes} appear. Chain: advertiser-search → company-ads?advertiser=AR… → ad-details with that AR + a CR from ads[]. Flat 2 credits native; Apify fallback capped at 5.

What you get

  • text / headline / landingUrl / impressions beyond company-ads rows
  • Strict AR+CR identity (no cross-entity Nike swaps)
  • countries[] ISO codes (not a comma-name string)
  • textIsTemplate for Google Ads DKI macros
  • Flat 2 credits native; Apify cap 5

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/google/ad-details?creative_id=https%3A%2F%2Fadstransparency.google.com%2Fadvertiser%2FAR16735076323512287233%2Fcreative%2FCR13596485266373083137" \
  -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 for this response (matches the endpoint's platform).
  • 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 for the request context. On popular-creators top-level: ISO feed market you queried (e.g. US) — not each creator's home country (see region).
  • mediaMedia attached to the item.

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.

Parameters

NameTypeRequiredDescription
creative_idstringYesGoogle Ads Transparency URL containing AR... advertiser and CR... creative IDs.
countrystringNoTwo-letter ISO country code. Default US.
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 google_ad_library_ad_details 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/google/ad-details and 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 Google 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 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 Google 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 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 Google Ad Library APIs

Google Company Ads APIGoogle Advertiser Search API

Ready to use the Google Ad Details API?

Sign up, grab your key, and make your first call in 60 seconds.

Get started free