Claude Web

This guide details how to add Instant Domain Search's MCP to Claude's web-based chat.

Requirements

While Instant Domain Search's MCP is free, you'll need access to Claude Pro or Claude Team to use Claude's custom connectors.

How It Works

The Instant Domain Search MCP connects Claude directly to our real-time domain APIs, the same infrastructure that powers instantdomainsearch.com.

The MCP exposes three powerful tools to Claude:

  1. search_domains — Check bulk availability across multiple TLDs instantly
  2. generate_domain_variations — Get intelligent alternatives with pronounceable prefixes, suffixes, and semantic variations
  3. check_domain_availability — Verify any list of domains with definitive yes/no answers from authoritative sources

Setup Guide

Setting up the Instant Domain Search MCP takes less than two minutes:

Step 1: Open Claude Settings

Navigate to your Claude settings at claude.ai/settings/profile.

Step 2: Access Connectors

Click on "Connectors" in the left sidebar or go directly to claude.ai/settings/connectors.

Claude web settings — Connectors tab

Step 3: Add Custom Connector

Click the "Add custom connector" button. Fill in the following details:

  • Name: Instant Domain Search (or your preferred name)
  • URL: https://api.instantdomainsearch.com/mcp/streamable-http
  • Leave "Advanced settings" as default (no API key needed!)
Adding the Instant Domain Search custom connector in Claude web

Click "Add" to confirm. You can now go into a normal chat to prompt the MCP.

Step 4: Start Using It

To start using the MCP, you'll need to first prompt Instant Domain Search in the chat. This is as simple as asking:

Help me find a domain name for my Brooklyn matcha cafe

Before it queries Instant Domain Search, it will ask for permission. We recommend clicking "Allow always".

Claude asking permission to use the Instant Domain Search MCP

After you allow the permissions, it will start using the MCP connection directly in the chat.

Claude using the MCP to recommend available domains in chat

Privacy & Security

Your searches through the MCP are private and secure:

  • We query authoritative registries directly (Verisign, PIR, etc.)
  • Your domain history never gets shared with retail registrars; only when you click referral links to purchase
  • No risk of domain front-running or price manipulation
  • No API keys or authentication required

Need help?

Contact our team at hello@instantdomainsearch.com.

Next Steps

Start a new conversation with Claude and try commands like:

  • "Find me an available .com domain for a coffee shop"
  • "Check if myawesomeidea.com is available"
  • "Generate variations of 'techstartup' that are available"

The Instant Domain Search MCP transforms Claude into your intelligent domain research assistant — no browser tabs required.