isdomainok-domain-naming

isdomainok-domain-naming is a skill for Claude Code, Codex from coconut971/isdomainok. It costs 68 tokens per session (1,108 once invoked), scanned A, original, MIT.

A naming assistant that creates and ranks names for projects, products, companies, apps or brands while checking whether their internet domain names are available.

In plain words
What is it for?
Use it to brainstorm names, compare domain endings, screen registered or costly domains and produce a verified shortlist.
Why use it?
It helps turn a creative shortlist into options backed by real domain availability, registration prices and preferred domain endings.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to brainstorm names, compare domain endings, screen registered or costly domains and produce a verified shortlist.

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Install with agentmods
npx agentmods add skills/coconut971/isdomainok/isdomainok-domain-naming
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add coconut971/isdomainok --skill isdomainok-domain-naming
Clone the repo
git clone --depth 1 https://github.com/coconut971/isdomainok

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for isdomainok-domain-naming

README.md
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Your own site
<a href="https://agentmods.dev/skills/coconut971/isdomainok/isdomainok-domain-naming"><img src="https://agentmods.dev/badge/skills/coconut971/isdomainok/isdomainok-domain-naming/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for isdomainok-domain-naming

Your own site · 80×15
<a href="https://agentmods.dev/skills/coconut971/isdomainok/isdomainok-domain-naming"><img src="https://agentmods.dev/badge/skills/coconut971/isdomainok/isdomainok-domain-naming.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,108 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.01108
Opus 5 $0.00034 $0.00554
Sonnet 5 $0.00014 $0.00222
Haiku 4.5 $0.00007 $0.00111

Measured 11d ago against content hash 373a1b230c08, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

isdomainok-domain-naming scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/isdomainok-domain-naming/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

IsDomainOK Domain Naming

Use this skill to turn naming work from brainstorming into a verified shortlist.

Core rule

Do not recommend a name as a strong final candidate until its relevant domains have been checked.

The language model should do the creative work. IsDomainOK should do the factual domain work. Do not add a separate LLM API call inside the workflow.

Preferred workflow

  1. Understand the naming brief:
    • what is being named;
    • desired language and tone;
    • length constraints;
    • important keywords or concepts;
    • forbidden words or styles;
    • preferred TLDs;
    • registration budget if any.
  2. Generate a broad candidate pool, normally 20 to 50 distinct names.
  3. Remove obvious duplicates, spelling traps, confusing pronunciations, and names that violate the brief.
  4. Send the remaining names to IsDomainOK in one batch.
  5. Prefer screen_names when the MCP server is available.
  6. Keep the raw availability sources separate. Do not hide a conflict result.
  7. Rank the surviving names using both creative quality and domain evidence.
  8. Present a compact shortlist with factual domain status and price information.

MCP tools

When IsDomainOK MCP is connected, prefer these tools:

  • about_isdomainok — confirm capabilities and whether GoDaddy credentials are configured without exposing the token.
  • check_domain — inspect one exact domain.
  • check_name — inspect one base name across several TLDs.
  • screen_names — batch-filter generated names and return the best domain candidates.

For naming tasks, screen_names is usually the best first tool after brainstorming.

Example intent:

  • names: 30 generated brand names
  • tlds: com, ai, io
  • max_registration_price: user budget when supplied
  • currency: currency requested by the user
  • allow_possible: false by default

CLI fallback

If MCP is unavailable, use the CLI:

isdomainok nameone nametwo namethree --tlds com ai io --json

If a GoDaddy token is configured, normal checks can include registrar availability and indicative registration/renewal prices automatically.

Read the full file on GitHub · 144 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 144 lines · 68 tokens per session scan A 373a1b230c08

Subscribe to this mod's changes

isdomainok-domain-naming is a skill published in the GitHub repository coconut971/isdomainok (2 stars, last pushed 26d ago), licensed MIT. It adds 68 tokens to every session and 1,108 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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