Greynoise MCP Server: Install & Setup

Install Greynoise in Claude Code

Claude Code

claude mcp add greynoise -e GREYNOISE_API_KEY=... -- npx -y mcp-greynoise

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "greynoise": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-greynoise"
      ],
      "env": {
        "GREYNOISE_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Greynoise MCP server do?

MCP server for GreyNoise API - Check if IPs are internet background noise or targeted attacks

Is the Greynoise MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Greynoise run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Greynoise to Claude Code?

Run: claude mcp add greynoise -e GREYNOISE_API_KEY=... -- npx -y mcp-greynoise

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