Google Advertiser Search API
Find Google Ads Transparency AR… entities — ranked multi-result (1 credit when found; empty is free).
Search advertisers on Google Ads Transparency and get ranked AR… entities with name, url, optional country/adsCount. Brand queries are expanded (nike → Nike, Inc. + regional entities) so country=US prefers the parent company over NIKE SRL. adsCount of 20000 is Google's own display ceiling, not a precise inventory count. Pass advertisers[0].id into /google/company-ads?advertiser=AR… to complete the chain. resolution is not-in-library when advertisers is empty, null when rows exist. Flat 1 credit when advertisers are returned; totalReturned=0 is 0 credits.
Docs: https://captapi.com/apis/google-ad-library-advertiser-search
Request
- Base URL: https://api.captapi.com
- URL: https://api.captapi.com/v1/ad-library/google/advertiser-search
- Auth: one of:
- HTTP bearer
- API key in header X-API-Key
Query parameters
Brand, domain, or advertiser name (min 2 characters). Expanded + ranked so US prefers Inc. over SRL.
Two-letter ISO country code used for ranking (e.g. US). Default US. Non-ISO codes are a definitive 400 INVALID_COUNTRY.
Max items to return (default 10, max 50). Flat 1 credit when results are returned; 0 credits when totalReturned is 0.
Set true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh.
Response
Success. The data object for this endpoint.
Changes
No recorded changes to this operation across all 3 revisions of this API.