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Domain Search

Find available domain names fast

Domain Search generates domain name ideas from any keyword and checks real-time availability across the TLDs you care about. Skip the manual hunting — get a ranked shortlist of available names in one step.

Whether you're naming a startup, launching a side project, or finding the right domain for a client, this tool surfaces creative candidates and immediately tells you which ones are actually available to register. You can also paste in a list of domains you already have in mind and verify them all at once.

What you can do

  • search_domains — generate and rank domain candidates from a keyword, checking availability across chosen TLDs
  • check_domains — verify registration status for up to 100 specific domains you already have in mind

Who it's for

Founders, marketers, and developers naming products, brands, or projects. Also useful for domain investors checking availability in bulk.

How to use it

  1. Call search_domains with your keyword or brand phrase and optionally specify TLDs like .com, .io, or .ai.
  2. Review the ranked results — available domains are surfaced first.
  3. Use check_domains to do a final availability check on your shortlist before heading to a registrar.

Getting started

Call search_domains with your brand keyword to get started. Always confirm availability directly with a registrar before purchasing.

Search Domains

Generate and rank domain candidates from a keyword or brand phrase, then check registration status for each candidate across selected TLDs.

Returns: Ranked domain candidates with availability checks, registrar metadata, and reasoning for each generated name
Check Domains

Check explicit domain names and return structured registration intelligence including source, status, registrar, and availability.

Returns: Structured registration status for each provided domain, including availability, registrar metadata, and lookup source diagnostics
Brainstorm Domains

Use an LLM to invent brandable, made-up second-level domain names from a brief, then check availability across the requested TLDs. Produces coined words (Loom, Quill, Stripe-style) instead of concatenations.

Returns: Ranked, brandable domain candidates with availability and per-name LLM rationale. Spend is one LLM call (~$0.001) plus one WHOIS lookup per candidate domain.
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v0.042026-05-08
  • Added brainstorm_domains — paid skill that uses an LLM to invent brandable, made-up second-level names (Stripe-, Loom-, Quill-style) and then runs availability checks across the requested TLDs. Use this when search_domains feels too template-driven.
v0.032026-05-08
  • Multi-word queries now generate variants for each token as an independent seed instead of collapsing "foo bar baz" into "foobarbaz" — naming brainstorms get a full variant tree per keyword. Candidate pool expanded from 40 to 60 to fit the additional variants.
v0.022026-03-22
  • Added subtitle, expanded description, and agent instructions
v0.012026-03-20
  • Initial release

Connect ToolRouter to use Domain Search in Claude, ChatGPT, Copilot, and more — no code required.

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What you can do with Domain Search

Find Available Domain Names

Search for available domain names that match your brand, project, or business idea.

  1. Ask Claude: "Search for available domains matching my brand name using domain-search"
  2. Claude runs search_domains and returns available options across TLDs
  3. Review the results and compare pricing for each option
  4. Pick your preferred domain and register it with your registrar

Search Domain Name Variations

Explore variations of a domain name including hyphens, abbreviations, and alternative TLDs.

  1. Ask Claude: "Search for variations of this domain name using domain-search" and provide your keyword
  2. Claude searches multiple variations and returns availability for each
  3. Compare the options by availability, pricing, and memorability
  4. Select and register your preferred variation

Discover Premium Domain Names

Find premium and high-value domain names available for purchase at registrar marketplaces.

  1. Ask Claude: "Search for premium domains related to my keyword using domain-search"
  2. Claude returns available premium listings with pricing
  3. Review the options and compare value against your budget
  4. Decide whether a premium domain is worth the investment for your brand
Browse all 6 Domain Searchguides →

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Frequently Asked Questions

Does it generate ideas or just check names I already have?

It does both. You can generate domain ideas from a keyword and also verify a shortlist you already have.

Can I compare different TLDs?

Yes. Availability checks run across TLDs so you can compare options side by side.

Is the output ranked or just a raw list?

The tool returns ranked candidates together with real-time registration checks, so the best-looking names rise to the top.

Is it useful for brandable launches?

Yes. It is a fast way to move from a keyword to available domain ideas when you are naming a new product or project.