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Whois MCP

Whois MCP

Public
modelcontextprotocol-servers/whois-mcp

Enables AI agents to perform WHOIS lookups via Model Context Protocol, retrieving domain, IP, ASN registration details, ownership, status, and expiration information seamlessly.

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May 30, 2025
Updated Jun 4, 2025

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Whois MCP

Model Context Protocol server for whois lookups.

Overview

This MCP server allows AI agents like Claude Desktop, Cursor, Windsurf,.. etc to perform WHOIS lookups and retrieve domain details.

Purpose You can directly ask the AI to check if a domain is available, who owns it, when it was registered, and other important details. No need to go to browser and search.

What is a WHOIS Lookup? A WHOIS lookup is the process of querying a WHOIS database to retrieve registration details about a domain name, IP address, or autonomous system. It helps users find out who owns a domain, when it was registered, when it expires, and other important details.

What Information Can a WHOIS Lookup Provide?

When you perform a WHOIS lookup, you can retrieve details such as:

  • Domain Name – The specific domain queried
  • Registrar Name – The company managing the domain registration (e.g., GoDaddy, Namecheap)
  • Registrant Details – The name, organization, and contact details of the domain owner (unless protected by WHOIS privacy)
  • Registration & Expiry Date – When the domain was registered and when it will expire
  • Name Servers – The DNS servers the domain is using
  • Domain Status – Active, expired, locked, or pending deletion
  • Contact Information – Administrative, technical, and billing contacts (if not hidden)

Available Tools

ToolDescription
whois_domainLooksup whois information about the domain
whois_tldLooksup whois information about the Top Level Domain (TLD)
whois_ipLooksup whois information about the IP
whois_asLooksup whois information about the Autonomous System Number (ASN)

Using with Cursor

Installation - Globally

Run the MCP server using npx:

npx -y @mcp-server/whois-mcp@latest

In your Cursor IDE

  1. Go to Cursor Settings > MCP
  2. Click + Add New MCP Server
  3. Fill in the form:
    • Name: Whois Lookup (or any name you prefer)
    • Type: command
    • Command: npx -y @mcp-server/whois-mcp@latest

Installation - Project-specific

Add an .cursor/mcp.json file to your project:

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

Usage

Once configured, the whois tools will be automatically available to the Cursor AI Agent. You can:

  1. The tool will be listed under Available Tools in MCP settings
  2. Agent will automatically use it when relevant
  3. You can explicitly ask Agent to send notifications

Using with Roo Code

Access the MCP settings by clicking "Edit MCP Settings" in Roo Code settings or using the "Roo Code: Open MCP Config" command in VS Code's command palette.

{ "mcpServers": { "whois": { "command": "npx", "args": [ "-y", "@mcp-server/whois-mcp@latest" ] } } }
  1. The whois capabilities will be available to Roo Code's AI agents

Development

# Install dependencies pnpm install # Build pnpm build

Debugging the Server

To debug your server, you can use the MCP Inspector.

First build the server

pnpm build

Run the following command in your terminal:

# Start MCP Inspector and server with all tools
npx @modelcontextprotocol/inspector node dist/index.js

License

MIT

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