Whois MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add whois-mcp-server -- npx -y @cyanheads/whois-mcp-server

{
  "mcpServers": {
    "whois-mcp-server": {
      "args": [
        "-y",
        "@cyanheads/whois-mcp-server"
      ],
      "command": "npx"
    }
  }
}

[mcp_servers.whois-mcp-server]
command = "npx"
args = ["-y", "@cyanheads/whois-mcp-server"]

{
  "mcpServers": {
    "whois-mcp-server": {
      "args": [
        "-y",
        "@cyanheads/whois-mcp-server"
      ],
      "command": "npx"
    }
  }
}

{
  "mcpServers": {
    "whois-mcp-server": {
      "args": [
        "-y",
        "@cyanheads/whois-mcp-server"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: MCP_HTTP_HOST (The hostname for the HTTP server.), MCP_HTTP_PORT (The port to run the HTTP server on.), MCP_HTTP_ENDPOINT_PATH (The endpoint path for the MCP server.), MCP_PUBLIC_URL (Public origin override for deployments behind a TLS-terminating reverse proxy (e.g. https://mcp.example.com).), MCP_AUTH_MODE (Authentication mode to use: 'none', 'jwt', or 'oauth'.), MCP_LOG_LEVEL (Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').), RDAP_TIMEOUT_MS (HTTP timeout for RDAP requests in milliseconds.), DOH_TIMEOUT_MS (HTTP timeout for DNS-over-HTTPS requests in milliseconds.), RDAP_MAX_RETRIES (Max retry attempts on transient RDAP failures.), DOH_MAX_RETRIES (Max retry attempts on transient DNS-over-HTTPS failures.). The author declared them in the registry entry; get the values from the project itself.