Real-time Google Ad Library data, one API call.
Search Google Ads Transparency Center advertisers and pull company ads or creative details.
The Google Ad Library API from Captapi gives developers reliable access to public Google Ad Library data without building or maintaining scrapers — send one authenticated request and get clean, structured JSON back.
curl "https://api.captapi.com/v1/ad-library/google/company-ads?advertiser=..." \
-H "Authorization: Bearer capt_live_..."What is the Google Ad Library API?
Search Google Ads Transparency Center advertisers and pull company ads or creative details. Every endpoint is a single authenticated GET request that responds with predictable JSON, so the data drops straight into dashboards, AI pipelines, RAG systems, and no-code automations. AI agents can call the same endpoints as MCP tools via @captapi/mcp.
Endpoints
What you can do with the Google Ad Library API
Company Ads
GET /v1/ad-library/google/company-ads
List an advertiser's Google Ads Transparency creatives — AR chain, cursor, dates, sort (2 credits).
2 credits
Ad Details
GET /v1/ad-library/google/ad-details
One Google ATC creative by AR…+CR… — text/headline/impressions + countries[] ISO (not an alias of company-ads).
2 credits
Advertiser Search
GET /v1/ad-library/google/advertiser-search
Find Google Ads Transparency AR… entities — ranked multi-result (1 credit).
1 credit
How it works
- 1. Sign up — get 100 free credits, no card required.
- 2. Create a key from your dashboard.
- 3. Call any endpoint above with
Authorization: Bearer capt_live_...and parse the JSON response. Passcache=trueto reuse a prior response from the 24h cache at no cost.
Frequently asked questions
What is the Google Ad Library API?+
The Google Ad Library API is a REST API from Captapi that returns public Google Ad Library data as clean, structured JSON. It covers 3 endpoints — Company Ads, Ad Details, Advertiser Search — behind one Bearer API key, with no OAuth flow and no infrastructure to build or maintain.
What data can I get from the Google Ad Library API?+
Search Google Ads Transparency Center advertisers and pull company ads or creative details. Each endpoint is a single GET request that responds with predictable JSON fields, so the data is ready for dashboards, AI pipelines, and automations.
Do I need a Google Ad Library developer account or OAuth?+
No. You only need a Captapi key (capt_live_...), sent as an Authorization: Bearer header. The same key works across all 32 platforms Captapi supports. We handle proxies, rate limits, retries, and parsing for you.
How much does the Google Ad Library API cost?+
Google Ad Library endpoints cost between 1 and 2 credits per call, depending on the endpoint and how many results you request. New accounts start with 100 free credits (no credit card). 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.
Can AI agents use the Google Ad Library API?+
Yes. Every Google Ad Library endpoint is exposed as a tool in the official MCP server (@captapi/mcp) for Claude, Cursor, and VS Code, and is also available through the @captapi/cli CLI, an n8n community node, a Make.com app, and an Apify Actor.
Is the Google Ad Library API suitable for production use?+
Yes. It is a stable REST API with predictable JSON, automatic retries, and upstream fallbacks. 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. Only successful responses consume credits — failed or empty results are never charged.
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Start using the Google Ad Library API in sixty seconds
Sign up, grab your API key, and make your first request. 100 credits on the house — no credit card.