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mcp/harbor
Claude Desktop

whois mcp server for Claude Desktop

io.github.cyanheads/whois-mcp-server

Domain registration, availability, DNS records, and IP/ASN resolution via RDAP and DNS-over-HTTPS.

client:Claude Desktop transport:stdio runtime:npm

Install whois mcp server in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "whois-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/whois-mcp-server"
      ],
      "env": {
        "MCP_LOG_LEVEL": "<MCP_LOG_LEVEL>",
        "RDAP_TIMEOUT_MS": "<RDAP_TIMEOUT_MS>",
        "DOH_TIMEOUT_MS": "<DOH_TIMEOUT_MS>",
        "RDAP_MAX_RETRIES": "<RDAP_MAX_RETRIES>",
        "DOH_MAX_RETRIES": "<DOH_MAX_RETRIES>"
      }
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs

whois mcp server in other clients

whois mcp server MCP server