Porkbun Domain Availability MCP Server

A Model Context Protocol (MCP) server that provides tools to check domain availability using the Porkbun API v3.

Features

• Single Domain Check: Check the availability of a single domain name

• Bulk Domain Check: Check availability of multiple domains (up to 10 at once)

• Rate Limiting: Respects Porkbun's rate limits with built-in delays

• Error Handling: Comprehensive error handling with detailed messages

Related MCP server: Domain Checker

Tools

1. check_domain_availability

Checks the availability of a single domain name and returns detailed pricing information.

Parameters:

• domain (string): The domain name to check for availability

Returns:

• Domain availability status

• Pricing information

• Premium domain status

• First-year promotions

• Renewal and transfer pricing

• Rate limit information

2. bulk_check_domains_availability

⚠️ WARNING: Checks the availability of multiple domain names at once. Due to Porkbun API rate limits (1 check per 10 seconds), this tool has a very long runtime. For example: 5 domains = ~50 seconds, 10 domains = ~100 seconds (1.7 minutes). The bulk tool provides better user experience and consolidated results compared to making multiple single domain check calls.

Parameters:

• domains (array): Array of domain names to check (maximum 10)

Returns:

• Bulk results with availability status for each domain

• Pricing information for available domains

• Individual error messages for failed checks

Prerequisites

• Node.js (v18 or later recommended)

• Porkbun API credentials (generate here)

Setup

1. Install Dependencies

npm install

2. Configure API Credentials

Set your Porkbun API credentials using environment variables or a .env file:

Option A: Environment Variables

export PORKBUN_API_KEY="your_api_key"
export PORKBUN_SECRET_API_KEY="your_secret_key"

Option B: Create a .env file

Create a .env file in the project root directory:

PORKBUN_API_KEY=your_api_key
PORKBUN_SECRET_API_KEY=your_secret_key

Option C: Custom .env Location

Pass a custom path when running the server:

node build/index.js --dotenv-path /path/to/your/.env

Building

Compile the TypeScript code:

npm run build

This creates the executable JavaScript file in the build/ directory.

Running the Server

Standard Start

npm start

Custom .env Path

node build/index.js --dotenv-path /path/to/your/.env

Development Mode

npm run dev

The server communicates using the MCP stdio transport (standard input/output).

Usage with Claude Desktop

To use this server with Claude Desktop, add the following configuration to the "mcpServers" section of your claude_desktop_config.json:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "porkbun-domain-availability": {
      "command": "node",
      "args": [
        "/absolute/path/to/mcp-porkbun-domain-availability/build/index.js",
        "--dotenv-path",
        "/absolute/path/to/mcp-porkbun-domain-availability/.env"
      ]
    }
  }
}

Replace the placeholder paths with the actual absolute paths on your system. Save the configuration file and restart Claude Desktop.

API Information

This server uses the Porkbun API v3. For more information about the API:

• Porkbun API Documentation

• Domain Check Endpoint

Rate Limiting

The Porkbun API has rate limits for domain checks. This server:

• Implements automatic delays between requests (10 second)

• Limits bulk checks to 10 domains maximum

• Provides rate limit information in responses

Error Handling

The server provides detailed error messages for:

• Missing or invalid API credentials

• Network connectivity issues

• API rate limit violations

• Invalid domain names

• Server errors

License

MIT License - see project repository for details.