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 kevinnft/ai-agent-skills --skill domain-intelgit clone --depth 1 https://github.com/kevinnft/ai-agent-skillsWrote 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/kevinnft/ai-agent-skills/domain-intel)<a href="https://agentmods.dev/skills/kevinnft/ai-agent-skills/domain-intel"><img src="https://agentmods.dev/badge/skills/kevinnft/ai-agent-skills/domain-intel/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/kevinnft/ai-agent-skills/domain-intel"><img src="https://agentmods.dev/badge/skills/kevinnft/ai-agent-skills/domain-intel.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 | $0.00079 | $0.00271 |
| Opus 5 | $0.00039 | $0.00135 |
| Sonnet 5 | $0.00016 | $0.00054 |
| Haiku 4.5 | $0.00008 | $0.00027 |
Grade A, and why
domain-intel 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 8d 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.
What it actually says
Passive domain intelligence using only Python stdlib and public data sources. Zero dependencies. Zero API keys. Works out of the box.
Capabilities
- Subdomain discovery via crt.sh certificate transparency logs
- Live SSL/TLS certificate inspection (expiry, cipher, SANs, TLS version)
- WHOIS lookup — supports 100+ TLDs via direct TCP queries
- DNS records: A, AAAA, MX, NS, TXT, CNAME
- Domain availability check (DNS + WHOIS + SSL signals)
- Bulk multi-domain analysis in parallel (up to 20 domains)
Data Sources
- crt.sh — Certificate Transparency logs
- WHOIS servers — Direct TCP to 100+ authoritative TLD servers
- Google DNS-over-HTTPS — MX/NS/TXT/CNAME resolution
- System DNS — A/AAAA records
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.
- 8d ago First seen · 27 lines · 79 tokens per session scan A 8bc2b85caee7
domain-intel is a skill published in the GitHub repository kevinnft/ai-agent-skills (14 stars, last pushed 1mo ago), licensed MIT. It adds 79 tokens to every session and 271 once invoked, about $0.0004 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 2026-09-03.
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