Domain Search
Fast domain availability checker that searches across multiple registrars (Porkbun, Namecheap) and protocols (RDAP, WHOIS) to find available domains, compare pricing, get suggestions, and check social media username availability.
What is Domain Search?
Domain Search is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to fast domain availability checker that searches across multiple registrars (porkbun, namecheap) and protocols (rdap, whois) to find available domains, compare pricing, get suggestions, and check social...
Fast domain availability checker that searches across multiple registrars (Porkbun, Namecheap) and protocols (RDAP, WHOIS) to find available domains, compare pricing, get suggestions, and check social media username availability.
This server falls under the Business Applications category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Fast domain availability checker that searches across multip
Use Cases
Maintainer
Works with
Installation
NPM
npx -y domain-search-mcpManual Installation
npx -y domain-search-mcpConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Domain Search
Domain Search MCP is a fast, zero-config domain availability checker that queries multiple registrars (Porkbun, Namecheap) and protocols (RDAP, GoDaddy, WHOIS) in a tiered fallback chain to find available domains across 500+ TLDs. It also checks social media username availability, compares registrar pricing, identifies expiring and auction domains via Sedo, and generates AI-powered brandable domain suggestions using a fine-tuned Qwen 7B model. Developers and entrepreneurs use it to research domain names directly from an AI assistant without switching to browser-based domain registrar tools.
Prerequisites
- Node.js 18 or later installed
- An MCP-compatible client such as Claude Desktop or Claude Code
- Optional: Porkbun API key and secret for Porkbun pricing (PORKBUN_API_KEY, PORKBUN_API_SECRET)
- Optional: Namecheap API key and user credentials for Namecheap pricing (NAMECHEAP_API_KEY, NAMECHEAP_API_USER, NAMECHEAP_CLIENT_IP)
- Optional: Redis instance URL for distributed caching in team environments (REDIS_URL)
Add the server to your MCP client configuration
Open your Claude Desktop config file (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json) and add the domain-search entry. No API keys are required for basic RDAP/WHOIS availability checks.
{
"mcpServers": {
"domain-search": {
"command": "npx",
"args": ["-y", "domain-search-mcp@latest"]
}
}
}Add registrar API keys for pricing data (optional)
To get real-time pricing from Porkbun or Namecheap, add their API credentials to the env block. Without these, availability checks still work via RDAP/WHOIS but pricing will not be returned.
{
"mcpServers": {
"domain-search": {
"command": "npx",
"args": ["-y", "domain-search-mcp@latest"],
"env": {
"PORKBUN_API_KEY": "pk1_...",
"PORKBUN_API_SECRET": "sk1_...",
"NAMECHEAP_API_KEY": "your_namecheap_key",
"NAMECHEAP_API_USER": "your_namecheap_username",
"NAMECHEAP_CLIENT_IP": "your.whitelisted.ip"
}
}
}
}Restart Claude Desktop and verify the tools load
Fully quit and reopen Claude Desktop. The server registers tools including search_domain, bulk_search, suggest_domains_smart, compare_registrars, check_socials, hunt_domains, and others. Ask Claude to check a domain to confirm the connection.
Try a basic domain availability search
Ask Claude to search for domain availability. The search_domain tool queries RDAP first, then falls back to GoDaddy and WHOIS, covering 500+ TLDs automatically.
Run AI-powered domain suggestions
The suggest_domains_smart tool uses a fine-tuned Qwen 7B model to generate brandable domain names based on a project description. No additional API key is required for this feature.
Domain Search Examples
Client configuration
Claude Desktop configuration with optional Porkbun API credentials for pricing data.
{
"mcpServers": {
"domain-search": {
"command": "npx",
"args": ["-y", "domain-search-mcp@latest"],
"env": {
"PORKBUN_API_KEY": "pk1_your_porkbun_key",
"PORKBUN_API_SECRET": "sk1_your_porkbun_secret"
}
}
}
}Prompts to try
Example prompts covering availability checks, AI suggestions, bulk searches, and social handle checks.
- "Check if myawesomestartup.com, .io, and .dev are available"
- "Suggest 10 brandable domain names for a coffee subscription service"
- "Bulk check the names 'launch', 'deploy', 'ship', and 'release' for the .io TLD"
- "Compare Porkbun and Namecheap pricing for registering mybrand.com"
- "Check if the username 'myproject' is available on Twitter, GitHub, and Instagram"
- "Find expiring domains related to 'fintech' that might be investment opportunities"Troubleshooting Domain Search
Domain checks return 'unknown' or timeout frequently
RDAP and WHOIS servers can be slow or rate-limit aggressive querying. Reduce PRICING_API_CONCURRENCY (default 4) and increase PRICING_API_TIMEOUT_MS (default 2500) in the env block. Adding a Redis URL via REDIS_URL will also cache results and reduce repeat lookups.
Namecheap API returns an IP whitelist error
Namecheap's API requires your client IP to be whitelisted in your Namecheap account settings. Set NAMECHEAP_CLIENT_IP to the exact IP address that the server runs from, and add that IP to the whitelist in your Namecheap API access settings.
AI suggestions (suggest_domains_smart) return an error or time out
The AI suggestion tool calls an inference endpoint for the fine-tuned Qwen model. Check ai_health to see the circuit breaker status. If the default endpoint is down, you can point QWEN_INFERENCE_ENDPOINT to a self-hosted Qwen 7B instance and adjust QWEN_TIMEOUT_MS accordingly.
Frequently Asked Questions about Domain Search
What is Domain Search?
Domain Search is a Model Context Protocol (MCP) server that fast domain availability checker that searches across multiple registrars (porkbun, namecheap) and protocols (rdap, whois) to find available domains, compare pricing, get suggestions, and check social media username availability. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Domain Search?
Install via npm with the command: npx -y domain-search-mcp. Then add the server configuration to your AI client's JSON config file (e.g., claude_desktop_config.json or .cursor/mcp.json).
Which AI clients work with Domain Search?
Domain Search works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Domain Search free to use?
Yes, Domain Search is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
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