FastDomainCheck MCP Server
A Model Context Protocol for checking domain name registration status in bulk.
What is FastDomainCheck MCP Server?
FastDomainCheck MCP Server is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to model context protocol for checking domain name registration status in bulk.
A Model Context Protocol for checking domain name registration status in bulk.
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- A Model Context Protocol for checking domain name registrati
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx fastdomaincheck-mcp-serverConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use FastDomainCheck MCP Server
FastDomainCheck MCP Server is a Go-based tool that enables AI assistants to check domain name registration status in bulk using dual WHOIS and DNS verification. It exposes a single `check_domains` tool that accepts up to 50 domain names per request and returns whether each domain is registered or available, making it useful for entrepreneurs researching brand names or developers automating domain availability workflows.
Prerequisites
- Claude Desktop, Claude Code, or another MCP-compatible client
- The FastDomainCheck binary downloaded from the GitHub releases page, or Python with uvx for the Python version
- Execute permissions on the downloaded binary (chmod +x on macOS/Linux)
- Network access for WHOIS and DNS lookups
Download the pre-built binary
Go to https://github.com/bingal/FastDomainCheck-MCP-Server/releases and download the binary for your operating system. The server is written in Go and ships as a self-contained executable with no runtime dependencies.
Make the binary executable (macOS/Linux)
After downloading, grant execute permissions to the binary so it can be launched by your MCP client.
chmod +x FastDomainCheck-MCP-ServerAlternatively, use the Python version via uvx
If you prefer not to use the binary, you can run the Python distribution with uvx. No installation required — uvx downloads and runs the package automatically.
uvx fastdomaincheck-mcp-serverConfigure your MCP client
Add the server to your claude_desktop_config.json. Use the binary path for the native Go version, or uvx for the Python version. No API keys or environment variables are required.
{
"mcpServers": {
"fastdomaincheck": {
"command": "/path/to/FastDomainCheck-MCP-Server",
"args": []
}
}
}Restart your MCP client and test domain checks
Restart Claude Desktop or your IDE. You can now ask your AI assistant to check domain availability in bulk. The server checks both WHOIS records and DNS resolution for accurate results.
FastDomainCheck MCP Server Examples
Client configuration
Claude Desktop configuration using the pre-built binary. Replace the path with the actual location of the downloaded executable on your system.
{
"mcpServers": {
"fastdomaincheck": {
"command": "/usr/local/bin/FastDomainCheck-MCP-Server",
"args": []
}
}
}Prompts to try
Example prompts for checking domain availability using the check_domains tool.
- "Check if acmecorp.com, acmecorp.io, and acmecorp.co are available for registration"
- "I'm launching a SaaS product called 'Flowly' — check all common TLDs: flowly.com, flowly.io, flowly.app, flowly.dev"
- "Are these domains registered: nextwave.com, nextwave.io, nextwave.co, nextwave.net?"
- "Check domain availability for my startup name ideas: vaultly, vaultio, and vaultapp across .com and .io"Troubleshooting FastDomainCheck MCP Server
Binary not found or permission denied error
Ensure the binary path in your config exactly matches the downloaded file location, and that you ran chmod +x on it. On macOS you may also need to allow it in System Preferences > Security & Privacy after the first blocked launch attempt.
Inaccurate results for some domains
The server uses dual WHOIS and DNS verification, but some registrars have non-standard WHOIS responses. Results are most reliable for .com, .net, .org, and major country-code TLDs. Newly registered or recently expired domains may show inconsistent results due to DNS propagation delays.
Rate limiting or WHOIS lookup failures for large batches
The server supports a maximum of 50 domains per request. If WHOIS servers rate-limit your queries, split your domain list into smaller batches of 10-20 domains and make multiple requests with a short pause between them.
Frequently Asked Questions about FastDomainCheck MCP Server
What is FastDomainCheck MCP Server?
FastDomainCheck MCP Server is a Model Context Protocol (MCP) server that model context protocol for checking domain name registration status in bulk. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install FastDomainCheck MCP Server?
Follow the installation instructions on the FastDomainCheck MCP Server GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with FastDomainCheck MCP Server?
FastDomainCheck MCP Server works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is FastDomainCheck MCP Server free to use?
Yes, FastDomainCheck MCP Server is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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