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 agentmods add skills/s0ld13rr/pentestcode/dnsnpx skills add s0ld13rr/pentestcode --skill dnsgit clone --depth 1 https://github.com/s0ld13rr/pentestcodeWhat 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 | $0.00059 | $0.00452 |
| Opus 5 | $0.00030 | $0.00226 |
| Sonnet 5 | $0.00012 | $0.00090 |
| Haiku 4.5 | $0.00006 | $0.00045 |
Grade A, and why
svc-dns 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 yesterday.
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
DNS Attack Reference
Zone Transfer (AXFR)
dig AXFR <domain> @<ns_server>
host -t AXFR <domain> <ns_server>
dnsrecon -d <domain> -a
DNS Enumeration
# Record types
dig <domain> ANY +noall +answer
dig <domain> A +short
dig <domain> AAAA +short
dig <domain> MX +short
dig <domain> NS +short
dig <domain> TXT +short
dig <domain> SOA +short
dig <domain> SRV +short
# Reverse DNS for IP range
dnsrecon -r <cidr>
# Brute force subdomains
dnsrecon -d <domain> -D /usr/share/seclists/Discovery/DNS/subdomains-top1million-5000.txt -t brt
dnsenum <domain>
fierce --domain <domain>
Subdomain Takeover
# Check for dangling CNAME records
dig CNAME <subdomain>
# If CNAME points to unclaimed resource (S3, Heroku, GitHub Pages, Azure) → takeover
# Automated check
subjack -w subdomains.txt -t 20 -o takeover_results.txt
nuclei -t takeovers/ -l subdomains.txt
DNS Cache Poisoning
# Check if recursion is open
dig @<target> example.com +recurse
# Test cache snooping (non-recursive query for cached records)
dig @<target> <popular_domain> +norecurse
DNS Tunneling Detection
# Unusually long subdomains or high query volume to single domain
# Tools: iodine, dnscat2 for establishing DNS tunnels
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.
- yesterday First seen · 61 lines · 59 tokens per session scan A 4d88c94e3b9a
svc-dns is a skill published in the GitHub repository s0ld13rr/pentestcode (566 stars, last pushed 11d ago), licensed MIT. It adds 59 tokens to every session and 452 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 2026-08-30.
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