Whois MCP

Overview

The Whois MCP server provides a lightweight, AI‑friendly interface for performing WHOIS lookups directly from any Model Context Protocol (MCP) compatible assistant. By exposing a set of command‑style tools—, , , and —developers can ask an AI to query registration databases for domains, top‑level domains (TLDs), IP addresses, or autonomous system numbers (ASNs). The server returns rich metadata such as registrant information, registrar details, registration and expiry dates, name servers, status flags, and contact roles. This eliminates the need to open a web browser or manually run command‑line utilities, streamlining workflows that involve domain research, security assessments, or compliance checks.

What Problem Does It Solve?

Domain ownership and status information is a cornerstone of many development, security, and marketing tasks. Traditional methods require visiting WHOIS websites or using separate CLI tools, which interrupts the AI‑driven workflow and can lead to fragmented data sources. The Whois MCP consolidates these lookups into a single, reproducible API that any MCP client can invoke with natural language prompts. This reduces context switching and enables assistants to provide instant, authoritative domain details in the same conversation where they are needed.

Key Features and Capabilities

• Unified WHOIS Access: One server exposes all common lookup types—domain, TLD, IP, and ASN—through a consistent command interface.
• Rich Data Output: The response includes registrant, registrar, registration dates, expiry, name servers, status flags, and contact roles, mirroring the depth of a standard WHOIS query.
• Natural Language Integration: AI assistants can interpret user intent (“Is example.com available?”) and automatically select the appropriate tool without explicit command syntax.
• Cross‑Platform Compatibility: Works seamlessly with Cursor IDE, Claude Desktop, Roo Code, and any MCP‑enabled environment, allowing developers to embed domain lookup capabilities wherever they develop.

Real‑World Use Cases

• Security Audits: Quickly verify ownership and status of domains used by a target or competitor, aiding in threat intelligence gathering.
• Domain Acquisition: Assist brand managers by checking availability and expiration data while drafting acquisition proposals within the same chat.
• Compliance & Governance: Validate that all company domains are properly registered and up‑to‑date during internal audits.
• DevOps Automation: Trigger domain status checks as part of CI/CD pipelines or infrastructure provisioning scripts, ensuring DNS configurations are valid before deployment.

Integration with AI Workflows

Once the server is registered in an MCP client, its tools appear automatically under “Available Tools.” AI agents can invoke them contextually—e.g., when a user mentions a domain name—or explicitly through prompts like “Check the WHOIS info for github.com.” The server’s responses are returned as structured data that can be rendered in the assistant’s UI or passed to downstream processing steps, such as populating a spreadsheet or triggering alerts if a domain is about to expire.

Unique Advantages

• Zero Configuration for End Users: Developers can add the server with a single command, and assistants start using it immediately without manual tool setup.
• Consistent Output Format: All WHOIS queries return data in the same JSON schema, simplifying parsing and downstream integration.
• Extensibility: The MCP framework allows additional tools (e.g., reverse DNS, zone file retrieval) to be added later without changing the core server logic.

In summary, the Whois MCP server equips AI assistants with instant, authoritative domain information, turning a traditionally manual lookup into an automated, conversational capability that fits naturally into modern development and security workflows.