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Check domain availability across 500+ TLDs. Single and bulk checks with UI.
About
Check domain availability across 500+ TLDs. Single and bulk checks with UI.
Security Report
Valid MCP server (2 strong, 3 medium validity signals). 1 known CVE in dependencies (1 critical, 0 high severity) Imported from the Official MCP Registry. Trust signals: trusted author (15/15 approved). 1 finding(s) downgraded by scanner intelligence.
5 files analyzed · 2 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-stucchi-domain-check": {
"args": [
"domain-check-mcp"
],
"command": "uvx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
domain-check-mcp
MCP server for checking domain name availability. Supports 500+ TLDs via RDAP, with WHOIS fallback for .de and .cn.
Installation
uvx domain-check-mcp
Usage in .mcp.json
{
"mcpServers": {
"domain-check": {
"command": "uvx",
"args": ["domain-check-mcp"]
}
}
}
Tools
- check_domain — Check if a domain name is available for registration
Example
check_domain("example.com")
Returns:
{
"domain": "example.com",
"available": false,
"status": "registered"
}
Supported TLDs
Via RDAP (500+)
All major gTLDs and many ccTLDs with RDAP support, sourced from the IANA RDAP Bootstrap:
.com, .net, .org, .info, .app, .dev, .io, .xyz, .site, .shop, .uk, .fr, .nl, .pl, .consulting, .cloud, .tech, .blog, .store, .online, and many more.
Via WHOIS
| TLD | WHOIS Server |
|---|---|
| .de | whois.denic.de |
| .cn | whois.cnnic.cn |
| .fj | www.whois.fj |
| .gs | whois.nic.gs |
| .bayern | whois.nic.bayern |
| .cat | whois.nic.cat |
| .eus | whois.nic.eus |
| .radio | whois.nic.radio |
| .scot | whois.nic.scot |
| .sport | whois.nic.sport |
How it works
- Extracts the TLD from the domain name
- Routes to the appropriate adapter (RDAP or WHOIS)
- RDAP: HTTP lookup — 404 means available, 200 means registered
- WHOIS: TCP port 43 lookup — pattern matching on the response
- Returns a structured result with availability status
Development
git clone https://github.com/stucchi/domain-check-mcp.git
cd domain-check-mcp
python -m venv .venv
source .venv/bin/activate
pip install -e ".[dev]"
pytest
License
MIT
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