MCP Domain Availability Server

A Model Context Protocol (MCP) server for checking domain availability and pricing using the GoDaddy OTE (Operational Test Environment) API.

Features

• Check domain availability and pricing via GoDaddy OTE sandbox
• Support for multiple TLD suffixes
• Fast and Full check modes
• Support for bulk domain checking
• Rate limiting (60 calls per minute)
• Normalized pricing in dollars with 2 decimal places
• Consistent field naming and data structures
• Period normalization (stored in months, displayed in years)

Installation

Using uv (Recommended)

# Install dependencies
uv add "mcp[cli]"

# Run with MCP Inspector for testing
DOMAIN_API_KEY="your-key:your-secret" mcp dev domain_availability/server.py

Manual Installation

pip install -e .

Configuration

Environment Variables

• DOMAIN_API_KEY: Your GoDaddy OTE API credentials in format "key:secret" (required)

Note: The server uses GoDaddy OTE (sandbox) API by default: https://api.ote-godaddy.com

GoDaddy OTE Setup

1. Sign up for GoDaddy Developer account

2. Get OTE (sandbox) API credentials

3. Set the environment variable: DOMAIN_API_KEY="your-ote-key:your-ote-secret"

MCP Configuration

Add this to your MCP client configuration (e.g., Claude Desktop's claude_desktop_config.json):

{
  "mcpServers": {
    "domain-availability": {
      "command": "uv",
      "args": ["run", "mcp-domain-availability"],
      "env": {
        "DOMAIN_API_KEY": "your-ote-key:your-ote-secret"
      }
    }
  }
}

Usage

Development & Testing

# Start MCP Inspector for testing
DOMAIN_API_KEY="your-key:your-secret" mcp dev domain_availability/server.py

This will start the MCP Inspector at http://localhost:6274 for interactive testing.

Tools Available

The server provides one tool: check_domain_availability

Parameters

Option 1: Direct domain list

• domains: Array of domain names to check (e.g., ["example.com", "example.org"])

Option 2: Base name with TLD suffixes

• base_name: Base domain name (e.g., "example")
• tld_suffixes: Array of TLD suffixes (e.g., [".com", ".org", ".net", ".io"])

Optional

• checkType: "FAST" or "FULL" (default: "FAST")
• FAST: Optimized for speed
• FULL: Optimized for accuracy

Examples

Check specific domains

{
  "domains": ["example.com", "example.org", "example.net"],
  "checkType": "FAST"
}

Check base name with multiple TLDs

{
  "base_name": "myawesomesite",
  "tld_suffixes": [".com", ".org", ".net", ".io", ".dev", ".app"],
  "checkType": "FULL"
}

Response Format

Text Response:

Domain Availability Check Results:

✅ AVAILABLE DOMAINS:
  • example.com - $12.99 USD for 1 year (Definitive)
  • example.org - $8.99 USD for 2 years (Preliminary)

❌ UNAVAILABLE DOMAINS:
  • example.net - Not available - Domain already registered

JSON Response (normalized fields):

{
  "domains": [
    {
      "domain_name": "example.com",
      "is_available": true,
      "price_dollars": 12.99,
      "currency_code": "USD",
      "is_definitive": true,
      "registration_period_months": 12
    },
    {
      "domain_name": "example.net",
      "is_available": false,
      "price_dollars": 0.00,
      "currency_code": "USD",
      "is_definitive": true,
      "registration_period_months": 12,
      "error_message": "Domain already registered"
    }
  ],
  "errors": []
}

Data Normalization

Price Normalization

• Input: GoDaddy API returns prices in micro-units (1/1,000,000 of currency)
• Output: Converted to dollars with 2 decimal places
• Example: 12000000 micro-units → $12.00 USD

Period Normalization

• Storage: Period stored in months for consistency
• Display: Converted to years for user-friendly display
• Example: 12 months → "1 year", 24 months → "2 years"

Field Naming

Consistent, explicit field names:

• domain_name (instead of domain)
• is_available (instead of available)
• price_dollars (instead of price)
• currency_code (instead of currency)
• is_definitive (instead of definitive)
• registration_period_months (instead of period)
• error_message (instead of error)

API Integration

This server integrates with GoDaddy OTE API:

• Base URL: https://api.ote-godaddy.com
• Endpoint: GET /v1/domains/available?domain={domain}
• Headers: Authorization: sso-key {key}:{secret}
• Rate Limit: 60 requests per minute

Authentication Format

Authorization: sso-key your-key:your-secret

Error Handling

The server handles various error conditions:

• Missing API key
• Invalid domains
• API rate limits (429) - with retry guidance
• Partial responses (203)
• Authentication errors (401, 403)
• Server errors (500)
• Network timeouts

Development

Setup Development Environment

# Clone and setup
git clone 
cd mcp-free-domain
uv add "mcp[cli]"

# Run tests
pytest

# Start development server
DOMAIN_API_KEY="test-key:test-secret" mcp dev domain_availability/server.py

Testing with MCP Inspector

1. Set your OTE credentials: DOMAIN_API_KEY="your-key:your-secret"

2. Run: mcp dev domain_availability/server.py

3. Open browser at http://localhost:6274

4. Use the session token displayed in terminal if prompted

5. Test the check_domain_availability tool

License

MIT License

Support

For issues and questions, please create an issue in the repository.