Whois MCP Server

What does “Whois” MCP Server do?

The Whois MCP (Model Context Protocol) Server acts as a bridge between AI assistants and the WHOIS database, enabling seamless domain information lookups within development environments. Designed for integration with tools like Claude Desktop, Cursor, and Windsurf, it empowers AI agents to fetch domain registration data, ownership details, registrar information, and domain status without leaving the IDE or workflow. This eliminates the need to manually search for domain data in a browser, simplifying tasks such as checking domain availability, validating ownership, or gathering technical contacts. By connecting AI-powered agents directly to the WHOIS lookup process, the Whois MCP Server streamlines workflows for developers, security researchers, and anyone needing domain intelligence as part of their automated or agentic processes.

List of Prompts

List of Resources

List of Tools

• whois_domain
  Looks up WHOIS information about a given domain name, providing details such as registrant, registrar, and domain status.
• whois_tld
  Retrieves WHOIS information about a Top Level Domain (TLD).
• whois_ip
  Performs a WHOIS lookup for a specified IP address, revealing ownership and allocation details.
• whois_as
  Looks up WHOIS information about an Autonomous System Number (ASN), aiding in network and routing analysis.

Use Cases of this MCP Server

• Domain Availability & Registration Checks
  Instantly verify if a domain is registered or available directly within your development workflow, streamlining the process of acquiring new domains.
• Security & Compliance Audits
  Retrieve ownership and registrar information to verify domain legitimacy, useful for threat intelligence, compliance checks, or investigating suspicious domains.
• Network Infrastructure Analysis
  Use ASN and IP lookups to map network relationships, enhance incident response, and understand the hosting details behind domains.
• Automated Domain Monitoring
  Integrate WHOIS lookups into CI/CD pipelines or agentic workflows to monitor for changes in domain registration or status.
• Technical Support & IT Operations
  Quickly surface domain registration and contact data to troubleshoot DNS or web hosting issues.

How to set it up

Windsurf

Claude

Cursor

1. Prerequisite: Ensure Node.js is installed.
2. Run the MCP Server:

   npx -y @bharathvaj/whois-mcp@latest
   

3. In Cursor IDE:
   • Go to Cursor Settings > MCP
   • Click + Add New MCP Server
   • Fill in:
     • Name: Whois Lookup (or any name)
     • Type: command
     • Command: npx -y @bharathvaj/whois-mcp@latest
4. Alternatively: Add a .cursor/mcp.json to your project:

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

5. Save and restart Cursor. The tools will appear automatically.

Cline

Securing API Keys

How to use this MCP inside flows

Using MCP in FlowHunt

To integrate MCP servers into your FlowHunt workflow, start by adding the MCP component to your flow and connecting it to your AI agent:

Click on the MCP component to open the configuration panel. In the system MCP configuration section, insert your MCP server details using this JSON format:

{
  "whois": {
    "transport": "streamable_http",
    "url": "https://yourmcpserver.example/pathtothemcp/url"
  }
}

Once configured, the AI agent is now able to use this MCP as a tool with access to all its functions and capabilities. Remember to change “whois” to the actual name of your MCP server and replace the URL with your own MCP server URL.

Overview

Our opinion

The Whois MCP server is focused and functional for its domain-lookup purpose, with clear tool definitions and integration instructions for Cursor. However, it lacks advanced MCP concepts like resources, prompt templates, and configuration for securing API keys. Its setup is easy for supported environments, but documentation for platforms beyond Cursor is missing.

Rating: 5/10 – Good for its specific use case, but limited in extensibility and documentation breadth.

MCP Score