LinkedIn Ad Library MCP Server

An MCP server that connects AI assistants to LinkedIn's Ad Library API. Search any advertiser's sponsored content, job postings, and influencer partnerships — directly from Claude or any MCP-compatible client.

Use Cases

Competitor Ad Analysis — See what ads your competitors are running, where they're targeting, and how much reach they're getting. Compare messaging strategies across markets.

Creative Benchmarking — Discover which ad formats (video, image, document, carousel) competitors use most. Analyze copy patterns and CTAs across your industry.

Hiring Signal Tracking — Monitor sponsored job postings to spot competitors scaling teams, entering new markets, or launching new products based on the roles they're hiring for.

Influencer & Thought Leader Discovery — Find which brands are running thought leader ads (paid endorsements) and identify creator partnerships in your space.

Tools

Tool	What it does
search_ads	Search sponsored ads — returns advertiser, ad type, impressions, country distribution, targeting
search_jobs	Search sponsored job postings — returns title, organization, location, description
search_paid_endorsements	Search thought leader ads — returns post URLs

Example Prompts

Once connected, try asking your AI assistant:

"Show me all LinkedIn ads mentioning Klarna in the last month"

"Compare the ad targeting strategy of Stripe vs Adyen in Europe"

"What job roles is Revolut sponsoring on LinkedIn right now?"

"Find thought leader ads in the BNPL space"

"Analyze the top 50 fintech ads by impression volume and summarize the messaging patterns"

"Which countries is PayPal targeting with their LinkedIn campaigns?"

Prerequisites

1. A LinkedIn Developer App with the Ad Library product enabled
2. A LinkedIn OAuth access token (expires every 60 days)

Getting Your Access Token

Fastest way — use LinkedIn's built-in token generator:

1. Go to LinkedIn Token Generator
2. Select your app
3. Select any scope (e.g., openid)
4. Click Request access token
5. Copy the token

Alternative — manual OAuth flow:

1. Add a redirect URI in your app's Auth tab
2. Visit:

   https://www.linkedin.com/oauth/v2/authorization?response_type=code&client_id=YOUR_CLIENT_ID&redirect_uri=YOUR_REDIRECT_URI&scope=openid&state=random123
   

3. Authorize → copy the code parameter from the redirect
4. Exchange it:

   curl -X POST https://www.linkedin.com/oauth/v2/accessToken \
     -d grant_type=authorization_code \
     -d code=AUTH_CODE \
     -d client_id=YOUR_CLIENT_ID \
     -d client_secret=YOUR_SECRET \
     -d redirect_uri=YOUR_REDIRECT_URI
   

Setup

git clone https://github.com/confortistefano/linkedin-ads-library-mcp.git
cd linkedin-ads-library-mcp
npm install
npm run build

Connect to Claude Code

Add to your MCP settings (.claude/settings.json or project settings):

{
  "mcpServers": {
    "linkedin-ads": {
      "command": "node",
      "args": ["/path/to/linkedin-ads-library-mcp/dist/index.js"],
      "env": {
        "LINKEDIN_ACCESS_TOKEN": "your-token-here"
      }
    }
  }
}

Connect to Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "linkedin-ads": {
      "command": "node",
      "args": ["/path/to/linkedin-ads-library-mcp/dist/index.js"],
      "env": {
        "LINKEDIN_ACCESS_TOKEN": "your-token-here"
      }
    }
  }
}

Docker

echo "LINKEDIN_ACCESS_TOKEN=your-token" > .env
docker compose up -d

Server available at http://localhost:3001/mcp.

API Reference

This server wraps LinkedIn's Ad Library API (version 202503):

Endpoint	Method	Tool
/rest/adLibrary	FINDER q=criteria	search_ads
/rest/jobLibrary	FINDER q=criteria	search_jobs
/rest/paidEndorsementPosts	FINDER q=searchCriteria	search_paid_endorsements

Rate Limits

LinkedIn doesn't publish specific rate limits. What we know:

• Limits are per-app, per-day, reset at midnight UTC
• HTTP 429 = limit reached, wait until reset
• Email alert at 75% usage
• Check your limits: Developer Portal → your app → Analytics tab

Environment Variables

Variable	Default	Description
LINKEDIN_ACCESS_TOKEN	required	OAuth access token
MCP_TRANSPORT	stdio	Transport mode: stdio or http
MCP_PORT	3000	HTTP server port
HOST	127.0.0.1	HTTP server bind address
RATE_LIMIT	100	Max requests per minute (HTTP mode)

Development

LINKEDIN_ACCESS_TOKEN=your-token npm run dev    # Dev mode with hot reload
npm run build                                    # Compile TypeScript
LINKEDIN_ACCESS_TOKEN=your-token npm start       # Production

Disclaimer

This is an unofficial, community-built tool. Not affiliated with or endorsed by LinkedIn. Users are responsible for complying with LinkedIn's API Terms of Use and must provide their own Developer App credentials.

License

MIT