simple-whois.app

Type a domain. We'll tell you who has it and when it expires.

Check without the website

From your terminal you get one word back. No browser needed.

$ curl simple-whois.app/yedinet.com
Taken

Make it a one-word command

Add this line to ~/.zshrc or ~/.bashrc, then open a new terminal window.

taken() { curl -s "https://simple-whois.app/$1"; }

From then on:

$ taken yedinet.com
Taken
$ taken my-next-idea.com
Available

Ask your AI assistant

Simple WHOIS is an MCP server, so Claude, Cursor and other AI tools can check domains for you, one at a time or up to 50 at once. Add this address as a remote MCP server:

https://simple-whois.app/mcp

In Claude Code it's one command:

claude mcp add --transport http simple-whois https://simple-whois.app/mcp

Then ask something like "Which of these names are still available as .com?"