Google Ad Library

GET /v1/ad-library/google/ad-details

Google Ad Details API

Google publishes spend and impression ranges only for election ads; commercial advertisers omit both. isActive is true when lastShown is within 7 UTC days.

2 credits per request

Try in Playground Get your API key — free Read the docs

TL;DR

Google publishes spend and impression ranges only for election ads; commercial advertisers omit both. isActive is true when lastShown is within 7 UTC days. 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?

Google publishes spend and impression ranges only for election ads in regions that require disclosure; commercial advertisers omit both. isActive is derived from lastShown — true when the creative was seen within 7 UTC days. Paste a Google Ads Transparency URL with both AR… advertiser and CR… creative IDs. This is ID lookup, not a richer scrape: same commercial SearchCreatives payload as a company-ads row. Response id and advertiser.id always match the request. Flat 2 credits native; Apify fallback capped at 5.

What you get

Lookup by AR… + CR… without paging company-ads
Same commercial field set as a list row (spend/impressions omitted — election-ads only)
isActive derived from lastShown ≤ 7 UTC days
Strict AR+CR identity (no cross-entity Nike swaps)
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

creative_id*stringGoogle Ads Transparency URL containing AR... advertiser and CR... creative IDs.countryoptionalstringTwo-letter ISO country code. Default US.cacheoptionalbooleanSet true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh.

API keyoptionalPaste your key to get a ready-to-run snippet. It stays in your browser.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 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:

idId of this advertiser item.
nameName of this advertiser item.
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 (0 credits on hit). Default false — always fetch fresh.

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. 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-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. 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. 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 API Google Advertiser Search API

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