io.github.cyanheads/whois-mcp-server

io.github.cyanheads/whois-mcp-server

Domain registry records and status, DNS records, and IP/ASN resolution over RDAP and DoH.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "whois-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/whois-mcp-server@0.2.1"
      ],
      "env": {
        "MCP_LOG_LEVEL": "info",
        "RDAP_TIMEOUT_MS": "5000",
        "DOH_TIMEOUT_MS": "3000",
        "RDAP_MAX_RETRIES": "2",
        "DOH_MAX_RETRIES": "2"
      }
    }
  }
}
Environment variables
  • MCP_LOG_LEVELSets the minimum log level for output (e.g., 'debug', 'info', 'warn').
  • RDAP_TIMEOUT_MSHTTP timeout for RDAP requests in milliseconds.
  • DOH_TIMEOUT_MSHTTP timeout for DNS-over-HTTPS requests in milliseconds.
  • RDAP_MAX_RETRIESMax retry attempts on transient RDAP failures.
  • DOH_MAX_RETRIESMax retry attempts on transient DNS-over-HTTPS failures.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
Developer Tools
Version
0.2.1
Registry
active
Published
10/16/2026

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