Real-time LinkedIn Ad Library data, one API call.
Search LinkedIn Ad Library ads and fetch creative details for B2B competitor intelligence.
The LinkedIn Ad Library API from Captapi gives developers reliable access to public LinkedIn 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/linkedin/ad-details?url=https%3A%2F%2Fwww.linkedin.com%2Fad-library%2F" \
-H "Authorization: Bearer capt_live_..."What is the LinkedIn Ad Library API?
Search LinkedIn Ad Library ads and fetch creative details for B2B competitor intelligence. 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 LinkedIn Ad Library API
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 LinkedIn Ad Library API?+
The LinkedIn Ad Library API is a REST API from Captapi that returns public LinkedIn Ad Library data as clean, structured JSON. It covers 2 endpoints — Search Ads, Ad Details — behind one Bearer API key, with no OAuth flow and no infrastructure to build or maintain.
What data can I get from the LinkedIn Ad Library API?+
Search LinkedIn Ad Library ads and fetch creative details for B2B competitor intelligence. 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 LinkedIn 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 LinkedIn Ad Library API cost?+
LinkedIn Ad Library endpoints cost between 2 and 17 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 shared cache (0 credits on hit); default is always fresh.
Can AI agents use the LinkedIn Ad Library API?+
Yes. Every LinkedIn 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 LinkedIn 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 shared cache (0 credits on hit); default is always fresh. Only successful responses consume credits — failed or empty results are never charged.
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Start using the LinkedIn 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.