Domain MCP

Check domain availability across multiple registrars with price comparison — all from Claude

Stop tab-switching between Claude and domain registrars. Check domains conversationally, compare prices across GoDaddy and Namecheap, and get instant purchase links.

You: "Check if example.com, example.io, and example.ai are available"

Claude:
## example.com
✅ **GoDaddy** — $12.99/year — Buy on GoDaddy →
✅ **Namecheap** — $10.98/year — Buy on Namecheap →

## example.io
✅ **GoDaddy** — $39.99/year — Buy on GoDaddy →
❌ **Namecheap:** Already registered

💡 Tip: Compare prices across registrars to find the best deal!

Perfect for: Startup naming · Domain research · Price comparison · Agency client work

Why Use This

Before: Brainstorm with Claude → Tab to GoDaddy → Type domain → Check → Tab to Namecheap → Check again → Back to Claude → Repeat 20 times

After: "Check if these 20 domains are available" → Instant results with price comparison → Keep brainstorming

What You Get

• Multi-registrar support — GoDaddy (recommended) + Namecheap (optional)
• Price comparison — See which registrar has the best price
• 600+ TLDs — .com, .io, .ai, .xyz, .tech, and 595 more
• No proxy server — Direct API calls, zero trust issues
• Purchase links — One-click affiliate-tracked links
• Flexible — Use one or both registrars

Quick Start

1. Get API Credentials

GoDaddy (Recommended — No IP restrictions):

1. Go to https://developer.godaddy.com/keys
2. Create production API key
3. Copy your API Key and API Secret

Namecheap (Optional — Requires IP whitelisting):

1. Enable API access in your Namecheap account
2. Whitelist your IP address
3. Generate API credentials

2. Configure Claude Code

Add to ~/.claude/settings.json:

GoDaddy only (simplest):

{
  "mcpServers": {
    "domains": {
      "command": "npx",
      "args": ["-y", "@birdmania1/domain-mcp"],
      "env": {
        "GODADDY_API_KEY": "your_api_key",
        "GODADDY_API_SECRET": "your_api_secret"
      }
    }
  }
}

Both registrars (price comparison):

{
  "mcpServers": {
    "domains": {
      "command": "npx",
      "args": ["-y", "@birdmania1/domain-mcp"],
      "env": {
        "GODADDY_API_KEY": "your_godaddy_key",
        "GODADDY_API_SECRET": "your_godaddy_secret",
        "NAMECHEAP_API_USER": "your_namecheap_user",
        "NAMECHEAP_API_KEY": "your_namecheap_key",
        "NAMECHEAP_USERNAME": "your_namecheap_user",
        "NAMECHEAP_CLIENT_IP": "your_ip_address"
      }
    }
  }
}

3. Restart Claude Code

4. Try It

Check if startup.io, myapp.com, and getapp.ai are available

Claude calls the MCP server and returns results with pricing from each registrar!

Use Cases

Startup Naming

You: "I'm building a SaaS for restaurant menus. Help me brainstorm domains."

Claude: Let me check some options...

## menusaas.com
✅ GoDaddy — $12.99/year
✅ Namecheap — $10.98/year — Buy on Namecheap → (cheaper!)

## restaurantmenu.io
✅ GoDaddy — $39.99/year
❌ Namecheap: Taken

## menu.app
❌ GoDaddy: Taken
❌ Namecheap: Taken

Price Shopping

You: "Check these 10 domains and tell me which registrar is cheapest for each"

Claude: [Checks all]

Best prices:
- example.com → Namecheap ($10.98 vs GoDaddy $12.99)
- test.io → GoDaddy ($39.99 vs Namecheap $44.88)
- myapp.ai → GoDaddy ($89.99)

Domain Research

You: "Check if any single-word tech domains are available in .ai"

Claude: Checking...

compiler.ai ✅ GoDaddy $89.99
deploy.ai ✅ GoDaddy $89.99
code.ai ❌ Taken everywhere

How It Works

Architecture:

Claude MCP → GoDaddy API (direct) → Results
          → Namecheap API (direct) → Results

1. You ask Claude to check domains (natural language)
2. Claude calls the Domain MCP tool
3. MCP queries GoDaddy API (always) and Namecheap API (if configured)
4. Results return with availability, pricing, and purchase links from each registrar

No proxy server. No man-in-the-middle. Your credentials stay on your machine.

Security & Trust

Why No Proxy?

Unlike some domain checkers, this MCP calls registrar APIs directly from your machine using your own API credentials.

• ✅ No proxy server to trust
• ✅ No data sent to third parties
• ✅ Open source (audit the code yourself)
• ✅ Your credentials never leave your machine

What About Purchase Links?

Purchase links include affiliate tracking to support this project. When you buy a domain via these links:

• You pay the same price (no markup)
• The registrar pays us a small commission
• You get the convenience of instant purchase links

Don't want affiliate tracking? Remove the GODADDY_AFFILIATE_ID and NAMECHEAP_AFFILIATE_ID env vars.

FAQ

Do I need accounts with both registrars?

No — you only need accounts/credentials for the registrars you want to use. GoDaddy alone works great.

Which registrar should I use?

• GoDaddy: Easier setup (no IP whitelisting), reliable API, good pricing
• Namecheap: Slightly cheaper for some TLDs, requires IP whitelist setup
• Both: Best for price comparison!

What's the difference between this and other domain MCPs?

Most domain MCPs either:

1. Use a proxy server (trust issues)
2. Only support one registrar
3. Don't show pricing

This one is multi-registrar, direct API (no proxy), and shows price comparison.

What about rate limits?

GoDaddy: 60 requests/minute Namecheap: 20 requests/minute

Normal usage (checking dozens of domains per session) won't hit limits.

Can I add more registrars?

PRs welcome! The architecture supports adding new registrar clients easily.

Advanced Usage

Get Your Godaddy Affiliate ID

Join the GoDaddy affiliate program at https://www.godaddy.com/affiliate-programs

Add to your config:

"GODADDY_AFFILIATE_ID": "your_affiliate_id"

Get Your Namecheap Affiliate ID

Apply at https://www.namecheap.com/affiliates/

Add to your config:

"NAMECHEAP_AFFILIATE_ID": "your_campaign_id"

Install from Source

For development:

git clone https://github.com/ziggythebot/domain-mcp.git
cd domain-mcp
npm install

Then in ~/.claude/settings.json:

{
  "mcpServers": {
    "domains": {
      "command": "node",
      "args": ["/absolute/path/to/domain-mcp/index.js"],
      "env": {
        "GODADDY_API_KEY": "...",
        "GODADDY_API_SECRET": "..."
      }
    }
  }
}

Contributing

Found a bug? Have a feature request? PRs welcome!

Common improvements:

• Additional registrar support (Porkbun, Hover, etc.)
• Better pricing data
• Bulk domain suggestions

Credits

Built for the Claude AI and MCP community.

Uses:

• GoDaddy API
• Namecheap API

License

MIT

Made by developers tired of tab-switching

⭐ Star this repo if you find it useful