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domain-availability-skill

Agent skill: check domain name availability across TLDs via the free domainee.dev API — no API key needed

Resetnak/domain-availability-skillcommunitylistedunreviewed
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Set up

Skills are installed by placing their folder where your agent loads skills.

Download ZIP from GitHub Open the repository

The download comes from github.com/Resetnak/domain-availability-skill itself, not from our server, so what you get is exactly what its author published.

Install instructions come from the README

Skills do not use an MCP config. Follow the steps in the README below.

README

synced Oct 23, 2026

domain-availability-skill

Agent skill: check if a name is free — domain TLDs, npm package, and GitHub username, in one go. No API key required.

License: MIT skills.sh Agent Skill No API key Stars this month

The tiny problem that eats 20 minutes every time you name something: is the domain free, is the npm name taken, is the GitHub handle available? Ask your coding agent once, get all three.

you:   I'm naming a new tool "coolstartup" — is it available?
agent: checking domain, npm, and GitHub...

       .com  ❌ taken       npm     ✅ free
       .io   ✅ available   GitHub  ✅ free
       .dev  ✅ available
       .ai   ✅ available
       ...

       want me to check any other TLDs?

Why

  • Zero setup — no API key, no config, just the skill.
  • Checks the whole naming decision, not just the domain — TLDs, npm package name, and GitHub username/org together when you're naming a project; just the domain when that's all you asked. PyPI and crates.io are one ask away if you name that ecosystem.
  • Multi-TLD in one call — the default set (com, io, dev, app, co, net, org, me, ai, xyz) or any TLDs you name.
  • Interactive — asks once whether to widen the TLD search, doesn't nag.
  • Handles the edge cases — unrecognized TLDs, per-TLD registry timeouts, and whole-request timeouts are documented and retried sanely, not silently mis-reported.
  • Honest about what it doesn't do — social handles (X, Instagram, ...) have no free unauthenticated availability API, so the skill says so instead of guessing from a scrape.

Install

npx skills add Resetnak/domain-availability-skill

Or copy skills/checking-domain-availability/ straight into your agent's skills directory (e.g. ~/.claude/skills/).

How it works

See skills/checking-domain-availability/SKILL.md — three free, keyless GET requests:

  • Domain TLDs: domainee.dev/api/v1/tools/domain-availability-checker (30/min, 500/day per IP)
  • npm: registry.npmjs.org/<name> (404 = free)
  • GitHub: api.github.com/users/<name> (404 = free, 60/hour unauthenticated)

License

MIT — see LICENSE.

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