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.
npx skills add kemalabuteliyte/domain-whois-mcp --skill domain-lookupgit clone --depth 1 https://github.com/kemalabuteliyte/domain-whois-mcpWrote 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.
[](https://agentmods.dev/skills/kemalabuteliyte/domain-whois-mcp/domain-lookup)<a href="https://agentmods.dev/skills/kemalabuteliyte/domain-whois-mcp/domain-lookup"><img src="https://agentmods.dev/badge/skills/kemalabuteliyte/domain-whois-mcp/domain-lookup/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.
<a href="https://agentmods.dev/skills/kemalabuteliyte/domain-whois-mcp/domain-lookup"><img src="https://agentmods.dev/badge/skills/kemalabuteliyte/domain-whois-mcp/domain-lookup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00069 | $0.00669 |
| Opus 5 | $0.00034 | $0.00334 |
| Sonnet 5 | $0.00014 | $0.00134 |
| Haiku 4.5 | $0.00007 | $0.00067 |
Grade A, and why
domain-lookup 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.
How it starts
The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Domain Lookup
Use the domain-whois-mcp tools to answer questions about domain names.
When to Use
- User asks about domain registration info (registrar, dates, nameservers, status)
- User wants to check if a specific domain is available
- User wants to check multiple domains at once
- User asks about a TLD's WHOIS or RDAP servers
- User needs raw WHOIS data for debugging or IP/ASN queries
- User wants to know which protocol (WHOIS/RDAP) is available for a TLD
If the user is brainstorming a project name, route to the project-name-finder skill instead.
Tool Selection Guide
| User Intent | Tool | Key Parameters |
|---|---|---|
| "Who owns example.com?" | whois_lookup |
domain |
| "Is example.com available?" | domain_check |
domain, method=auto |
| "Check these 10 domains" | bulk_domain_check |
domains, concurrency |
| "RDAP info for example.com" | rdap_lookup |
domain |
| "What WHOIS server handles .xyz?" | tld_info |
tld |
| "Send raw WHOIS to specific server" | whois_raw |
query, server |
| "Which TLDs support RDAP?" | rdap_bootstrap_info |
filter (optional) |
| "Find WHOIS server for .tr" | find_whois_server |
domain |
Usage Patterns
Quick availability check
Use domain_check with method auto. It tries RDAP first (faster), falls back to WHOIS.
Bulk availability across TLDs
bulk_domain_check({
domains: ["brand.com", "brand.io", "brand.dev", "brand.ai", "brand.co"],
concurrency: 5
})
Full registration details
whois_lookup for WHOIS text + parsed fields, rdap_lookup for structured JSON.
Unknown or exotic TLD
Call tld_info first, then pick the appropriate lookup tool based on what it reports.
Response Interpretation
- Status codes like
clientTransferProhibited,serverDeleteProhibitedindicate registry locks DNSSEC: signedDelegationmeans the domain uses DNSSEC- Expiration dates help identify domains that may become available soon
- Referral following means the tool automatically got thick WHOIS from the registrar
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.
- 11d ago First seen · 66 lines · 69 tokens per session scan A 8557edf15f79
domain-lookup is a skill published in the GitHub repository kemalabuteliyte/domain-whois-mcp (0 stars, last pushed 4mo ago), licensed MIT. It adds 69 tokens to every session and 669 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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