# Startup Name Check

Check if a .com is still free for your business name. It is free, with no sign-up and no key.

## What it does

Check whether the domain for a startup, product or business name is already registered before you fall in love with it.

Ask "is acme.com available?", "check if this startup name is taken" or "find an available .com for my bakery name".

Startup Name Check turns a name into a domain label, then asks Cloudflare Registrar's domain-check API whether that domain can be registered and what it costs. When that API is not configured, or does not cover the ending, it asks the registry's public RDAP service instead.

It checks up to five names or domains at a time across .com, .net, .org, .ai, .app and .dev by default, or the endings you choose.

For a taken domain it shows the registration, expiry and last-change dates when the registry publishes them. It never returns who owns it or any contact details.

When Cloudflare Registrar answers for an available domain, the answer includes the registration and renewal cost. That figure is not a charge and does not reserve the name.

Results are indicative: they show the status at that moment and do not reserve a name. Premium or reserved names can be unavailable or cost more.

Trademarks are not searched, so run a trademark check before you commit to a name.

It stores nothing about you: answers are cached for up to five minutes, and the only lasting record is a daily count of calls per tool.

- Checks whether a name's domain is registered in .com, .net, .org, .ai, .app and .dev
- Checks a full domain such as acme.com on its own
- Compares up to five candidate names in one answer
- Shows registration and expiry dates for domains that are taken, when the registry publishes them
- Shows the registration and renewal cost when Cloudflare Registrar returns one
- Never returns owner or contact details

## Who it is for

Anyone who asks an AI assistant a question like this one: “Find an available .com for my bakery name.”

Roles that use it at work: Startup founder.

Role guides that use it: [Startup founder](https://tools.openkrill.app/for/startup-founder).

## Price

Startup Name Check is free to use. There is no sign-up, no account and no API key. Calls are limited to 60 calls a minute per network and 5000 calls a day per server, shared by all callers. Repeat questions are answered from a cache.

## Tools it offers

- `check_domain_availability`: Check name and domain availability

## Connect

The MCP server is `https://names.openkrill.app/mcp` (streamable HTTP). It needs no key.

Claude Code, in one command:

```
claude mcp add --transport http names https://names.openkrill.app/mcp
```

Hermes Agent, in one command that answers its two setup questions (no key, enable all tools):

```
printf 'n\ny\n' | hermes mcp add names --url https://names.openkrill.app/mcp
```

Or add these lines to `~/.hermes/config.yaml`, under an existing `mcp_servers:` key if the file has one. Start a new Hermes session after either step.

```
mcp_servers:
  names:
    url: https://names.openkrill.app/mcp
```

Any other agent: give it this page's Markdown address, `https://tools.openkrill.app/tools/names.md`, and ask it to connect Startup Name Check.

Install guides, each checked with a real call: [Startup Name Check in ChatGPT](https://tools.openkrill.app/integrations/names/chatgpt), [Startup Name Check in Claude](https://tools.openkrill.app/integrations/names/claude), [Startup Name Check in Cursor](https://tools.openkrill.app/integrations/names/cursor), [Startup Name Check in VS Code](https://tools.openkrill.app/integrations/names/vscode), [Startup Name Check in Pi](https://tools.openkrill.app/integrations/names/pi).

## Job recipes for agents

Step-by-step recipes that walk an agent through a job with this server's tools:

- Check name and domain availability, with `check_domain_availability`

[Download the recipes as SKILL.md](https://tools.openkrill.app/skills/names-jobs/SKILL.md). Save it as `names-jobs/SKILL.md` in your agent's skills folder. A connected MCP client gets the same recipes from `prompts/list` on the gateway, `https://api.openkrill.app/gateway/mcp`.

It is listed under Websites, domains and email in the [full tool list](https://tools.openkrill.app/tools). The same facts in plain text are in [llms.txt](https://tools.openkrill.app/llms.txt).

Source: the Startup Name Check listing, version 1.1.1. As of 2026-10-18.