Startup Name Check
Is that name's domain taken?
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.
What you can ask
- Is acme.com available?
Example path
MCP connector
- Server URL
https://names.openkrill.app/mcp- Login
- None
- Protocol
- MCP 2026-07-28
- Instructions
Startup Name Check: Is that name's domain taken?. Use when the user asks whether a domain, startup name or business name is available or taken. Pass names as the user wrote them, or full domains such as acme.com to check only that domain; set tlds when the user wants specific endings ("a .com" means tlds ["com"]). When asked to find an available domain, brainstorm up to five candidate names and check them together. Always say the result is indicative and not a reservation, and that trademarks were not checked. Give the source and asOf date. When registrationCost is present, state that cost and that it is not a charge. A status of unsupported means the ending has no public registration data; unavailable means the lookup did not answer, so say the result is unknown. Never guess who owns a domain, and never offer to register, buy or reserve one. This server allows 60 tool calls a minute per network and 5,000 a day for all callers together; the day count resets at 00:00 UTC. If a tool fails, gives a wrong answer, or a tool you need is missing, call with one short message (kind, message, tool); reads the answer.
Tools
Reads data2
Changes data1
Skills
None in the store listings or on the server