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How to connect Whoisfreaks to Claude

Connect Claude Web, Desktop and Cowork to Whoisfreaks MCP. Get whois info for google.com, check domain registration status for mysite.io, and more using natural language, with authentication handled for you.

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Whoisfreaks is a leading provider of domain WHOIS database and API services. Instantly access comprehensive domain ownership and registration data for research and monitoring.

18 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Whoisfreaks account to Claude via Composio Connect, enabling it to get WHOIS info for google.com, check domain registration status for mysite.io, list recent ownership changes for example.org, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Whoisfreaks with

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Connecting Whoisfreaks to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Whoisfreaks account

Back in Claude, ask it to connect to Whoisfreaks or give it any Whoisfreaks-related task.

For example, ask Claude to:

  • "Get WHOIS info for google.com"
  • "Check domain registration status for mysite.io"
  • "List recent ownership changes for example.org"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Whoisfreaks account is ready to use.

What is the Whoisfreaks Claude Connector, and what's possible with it?

The Whoisfreaks MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Whoisfreaks account. It provides structured and secure access so your agent can perform Whoisfreaks operations on your behalf.

Troubleshooting

1. Why does Claude not use the Composio connector for Whoisfreaks?

The connector can show as connected, but Claude must use it in each Whoisfreaks conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Whoisfreaks again.

2. Why does Claude show an MCP server error before Whoisfreaks connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Whoisfreaks.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Whoisfreaks.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Whoisfreaks authorization link not work?

The Composio connector is one server. Your Whoisfreaks account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Whoisfreaks connection.
  • Composio creates a fresh Whoisfreaks authorization link.
  • Open that link in your browser and finish the Whoisfreaks sign-in.

4. Why do Whoisfreaks actions fail after they worked before?

The Whoisfreaks connection can expire or lose permission.

  • Ask Claude to inspect the Whoisfreaks connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Whoisfreaks account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Whoisfreaks.
  • If the action still fails with a permission error, check that the connected account has that permission in Whoisfreaks itself.

5. How do I switch to a different Whoisfreaks account?

Claude can manage the Whoisfreaks connection for you.

  • Ask Claude to disconnect or delete the current Whoisfreaks account.
  • Ask Claude to connect Whoisfreaks again.
  • Open the new Composio authorization link for Whoisfreaks.
  • Sign in with the other Whoisfreaks account in the browser.
  • After the account connects, ask Claude to retry the Whoisfreaks task.

6. Why is my Whoisfreaks connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Whoisfreaks connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Whoisfreaks tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Whoisfreaks.
TOOLS

Supported Tools

Every Whoisfreaks action and event your agent gets out of the box.

ASN WHOIS Lookup

Tool to retrieve comprehensive ASN WHOIS information including ownership, network infrastructure, and IP address ranges.

Bulk DNS Lookup

Tool to process multiple domains or IPs simultaneously, returning all DNS records in a single request (max 100).

Bulk Domain Availability Check

Tool to check availability of multiple domains in one request (max 100 domains).

Bulk WHOIS Lookup

Tool to query WHOIS information for up to 100 domains in a single request.

DNS Live Lookup

Tool to perform real-time DNS record resolution for network diagnostics and configuration verification.

Check Domain Availability

Tool to check if a domain is available for registration with optional suggestions.

Get Domain Files Status

Tool to check availability and update status of domain data files including newly registered, expired, and dropped domains.

IP Geolocation Lookup

Tool to retrieve geographic location information for an IP address including country, city, coordinates, ISP, and security details.

IP WHOIS Lookup

Tool to retrieve comprehensive WHOIS information for an IP address including organization, ISP, and network details.

Security Threat Lookup

Tool to check if an IP address is associated with malicious activity, security threats, or appears on blocklists.

SSL Certificate Lookup

Tool to fetch live SSL certificate with full secure cert chain, validity dates, and issuer information.

Subdomain Lookup

Tool to discover all subdomains associated with a domain name.

WHOIS Historical Lookup

Tool to access historical domain records from comprehensive database with up to 100 records per page.

WHOIS Live Lookup

Tool to fetch real-time WHOIS domain registration data directly from authoritative WHOIS servers.

WHOIS Live Lookup V2

Tool to fetch real-time WHOIS domain data using v2.

WHOIS Reverse Lookup By Company

Tool to search for domains registered by a specific company or organization using reverse WHOIS lookup.

WHOIS Reverse Lookup by Email

Tool to search for domains registered with a specific email address.

WHOIS Reverse Lookup By Owner

Tool to search for domains registered by a specific owner name using reverse WHOIS lookup.

FRAMEWORKS

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Claude Code logo

Claude Code

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OpenAI Agents SDK logo

OpenAI Agents SDK

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Claude Agent SDK logo

Claude Agent SDK

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Codex logo

Codex

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OpenClaw logo

OpenClaw

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Hermes logo

Hermes

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Atomic Agent logo

Atomic Agent

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Google ADK logo

Google ADK

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LangChain logo

LangChain

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Vercel AI SDK logo

Vercel AI SDK

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Mastra AI logo

Mastra AI

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LlamaIndex logo

LlamaIndex

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CrewAI logo

CrewAI

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Pydantic AI logo

Pydantic AI

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AutoGen logo

AutoGen

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FAQ

Frequently asked questions

With a standalone Whoisfreaks MCP server, the agents and LLMs can only access a fixed set of Whoisfreaks tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Whoisfreaks and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Whoisfreaks tools.

Yes, absolutely. You can configure which Whoisfreaks scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Whoisfreaks data and credentials are handled as safely as possible.

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