MCP server · Research

Domain Availability MCP server

Let your AI check whether a website name is free across many endings like .com, .io and .ai.

This is a small helper that lets your AI check if a website name is still available. You ask in normal words, and it looks up the name for you. It is handy if you are starting a business, a blog or a side project and need a name that is not taken yet.

What is an MCP server? The 30-second version

On its own, your AI can only chat with you. An MCP server is a small helper program that gives your AI one new skill. This helper gives it a connection to domain registries, the places that keep track of who owns which website name. So when you ask about a name, your AI can go and check it for you.

What this MCP server does

You ask your AI something like: is mysite.com available? Your AI passes that question to this helper. The helper then asks the official registry for that ending, using a system called RDAP, and falls back to older lookups when needed. It comes back with a simple answer: available, taken, or undetermined, which means nobody could confirm it either way. You see the result right in your chat, plus a short summary and how long the check took.

Flow diagram: you ask your AI “Is mysite.com available?”, the Domain Availability MCP server connects it to Website name registry, and you get back available, taken, or unsure.

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What you can do with it

Check if one exact website name is available
Check one name across many endings at once
Get suggestions grouped by popular, country or newer endings
See which names are taken and which are still free
Spot names that could not be confirmed, so you do not trust a wrong answer
Compare options before you buy a name

Try asking your AI

“Is mysite.com available?”
“Check the name startup across all endings”
“Is awesome.io taken?”
“Show me which endings are free for the name brightleaf”

What it gives back to you

You get a clear answer in the chat: available, taken, or undetermined. If you asked about many endings, you get lists sorted into available, unavailable and undetermined, plus a short summary by category. It also shows how long the check took and which source answered. Nothing is changed anywhere, it is all read-only.

Before you start

What you need

The Claude desktop app
Python 3.10 or newer (3.12 recommended)
The uv package manager (a small free tool; the page shows a one-line install command)
An internet connection

Good to know

The results are read-only and nothing is changed, but a name marked available can still be bought by someone else a moment later, and some endings come back as undetermined, which is not the same as free.

Install it with your AI

Add Domain Availability MCP server to your AI, no technical skills needed

You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.

Sign in to get the install prompt

Members get a ready-made prompt that lets the Claude desktop app check Domain Availability MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.