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What is MCP?

The Model Context Protocol (MCP) lets LLMs call LinkupAPI directly — all LinkedIn and B2B intelligence tools become native capabilities of your AI assistant.

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Endpoint

https://mcp.linkupapi.com/mcp
Two ways to authenticate:
  • OAuth 2.1 (recommended) — approve access from the LinkupAPI dashboard, no key to paste. Supported by Claude, ChatGPT, Cursor, Gemini, VS Code, and most modern MCP clients.
  • API key — pass your key via the x-api-key header. Works everywhere, useful for headless setups or clients without OAuth.
Get your API key at app.linkupapi.com.

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Claude (Desktop / Code)

claude mcp add --transport http linkupapi https://mcp.linkupapi.com/mcp
On first use, Claude opens app.linkupapi.com/mcp/authorize in your browser. Sign in and click Authorize — Claude is connected.

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Option 2 — API key

claude mcp add --transport http linkupapi https://mcp.linkupapi.com/mcp --header "x-api-key: YOUR_API_KEY"
Restart Claude — all LinkupAPI tools are now available.

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ChatGPT (Custom Connectors)

In ChatGPT → Settings → Connectors → Add custom connector:
  • Name: LinkupAPI
  • Server URL: https://mcp.linkupapi.com/mcp
  • Authentication: choose OAuth to authorize from the dashboard, or Custom header with x-api-key: YOUR_API_KEY
Save and enable the connector in your chat.

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Cursor

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project): 
{
  "mcpServers": {
    "linkupapi": {
      "url": "https://mcp.linkupapi.com/mcp"
    }
  }
}
Cursor auto-discovers OAuth on first use and opens the LinkupAPI authorize page. To skip OAuth and use an API key, add "headers": { "x-api-key": "YOUR_API_KEY" }.

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Gemini (gemini-cli / Gemini Code Assist)

Add to ~/.gemini/settings.json: 
{
  "mcpServers": {
    "linkupapi": {
      "httpUrl": "https://mcp.linkupapi.com/mcp"
    }
  }
}
Restart Gemini — it triggers the OAuth flow automatically. For API key auth, add "headers": { "x-api-key": "YOUR_API_KEY" }.

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VS Code (GitHub Copilot)

Add to .vscode/mcp.json: 
{
  "servers": {
    "linkupapi": {
      "type": "http",
      "url": "https://mcp.linkupapi.com/mcp"
    }
  }
}
Click Auth above the server entry to trigger OAuth in your browser. Tokens are stored in the OS keychain.

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Windsurf / other clients without OAuth

Windsurf’s Cascade doesn’t implement the MCP OAuth flow natively. Use API key auth: 
{
  "mcpServers": {
    "linkupapi": {
      "url": "https://mcp.linkupapi.com/mcp",
      "transport": "http",
      "headers": {
        "x-api-key": "YOUR_API_KEY"
      }
    }
  }
}
Or wrap the server with mcp-remote to get OAuth via a stdio bridge.

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Verify it works

Ask your LLM: “Validate the email [email protected] using LinkupAPI”. It should call the validate_email tool and return a result.

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Support

Issues? Reach us at [email protected] or via the dashboard support page.