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Quadratik

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Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http quadratik 'https://quadratikmcp-production.up.railway.app/' --header 'X-API-Key: <Your Quadratik API key. Get one at https://quadratik.com → Account Settings → API Keys. Optional for searching (results will have masked emails/phones), required for saving, exporting, and list management.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "quadratik": {
            "type": "http",
            "url": "https://quadratikmcp-production.up.railway.app/",
            "headers": {
                "X-API-Key": "<Your Quadratik API key. Get one at https://quadratik.com → Account Settings → API Keys. Optional for searching (results will have masked emails/phones), required for saving, exporting, and list management.>"
            }
        }
    }
}

Frequently asked questions

What is Quadratik?

Search and manage 220M+ B2B contacts. Filter by title, industry, location, and more.

How do I install Quadratik?

It runs as a remote server. In Claude Code: claude mcp add --transport http quadratik 'https://quadratikmcp-production.up.railway.app/' --header 'X-API-Key: <Your Quadratik API key. Get one at https://quadratik.com → Account Settings → API Keys. Optional for searching (results will have masked emails/phones), required for saving, exporting, and list management.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Quadratik need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Is Quadratik open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Quadratik?

It is published by quadratik-ai. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.