io.github.cyanheads/whois-mcp-server
Domain registry records and status, DNS records, and IP/ASN resolution over RDAP and DoH.
Target client
run in your project directory
claude mcp add whois-mcp-server -e MCP_LOG_LEVEL=<MCP_LOG_LEVEL> -e RDAP_TIMEOUT_MS=<RDAP_TIMEOUT_MS> -e DOH_TIMEOUT_MS=<DOH_TIMEOUT_MS> -e RDAP_MAX_RETRIES=<RDAP_MAX_RETRIES> -e DOH_MAX_RETRIES=<DOH_MAX_RETRIES> -- npx -y @cyanheads/whois-mcp-server
setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok LangChain
Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs
This listing does not declare its tools. Connect the server and your client will discover them on the handshake.