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 pashki975/thm-claude-kit --skill thm-trainergit clone --depth 1 https://github.com/pashki975/thm-claude-kitWrote 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/pashki975/thm-claude-kit/thm-trainer)<a href="https://agentmods.dev/skills/pashki975/thm-claude-kit/thm-trainer"><img src="https://agentmods.dev/badge/skills/pashki975/thm-claude-kit/thm-trainer/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/pashki975/thm-claude-kit/thm-trainer"><img src="https://agentmods.dev/badge/skills/pashki975/thm-claude-kit/thm-trainer.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 | $0.00089 | $0.01429 |
| Opus 5.5 | $0.00036 | $0.00572 |
| Sonnet 5.5 | $0.00018 | $0.00286 |
| Haiku 4.5 | $0.00009 | $0.00143 |
Grade A, and why
thm-trainer 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 1mo 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 — 92 lines — stays where its author put it; the contents beside it link to each section on GitHub.
THM Trainer — how to drive a room
A coaching guide, not a solutions list. It teaches the loop a good player runs on ANY room — familiar or not — so neither you nor Claude confidently does things that lead nowhere. The commands and agents are just tools this loop reaches for.
The loop
- CLASSIFY -> what is this room teaching? what's the goal (flag string vs shell)?
- OBSERVE -> the lightest thing that fits the class; don't over-scan
- HYPOTHESIZE-> "the way in is probably X, because Y" (one sentence, out loud)
- TEST -> one focused action whose result decides the next move
- DECIDE -> new info -> loop; goal met -> STOP; no new info -> reclassify
Underneath it all: every action should change what you do next. If a scan wouldn't change your plan, don't run it.
Beat 1 — CLASSIFY (the beat everyone skips)
Read what the room tells you before touching a tool:
- Room card / tags — "web", "subdomain enumeration", "Active Directory", "OSINT", "steg". The strongest signal. Read it first, every time.
- Title — "Takeover" -> subdomain/DNS takeover. Names hint.
- Task text — a domain name means DNS/vhost work; a downloadable file means offline analysis.
- a .pcap / capture file -> network-forensics skill + /pcap (tshark)
- Difficulty — "easy" usually means one technique, one insight. Don't over-engineer. Then name the GOAL: flag string (many recon/web/OSINT rooms — no shell needed) vs user+root shell (full compromise) vs a specific answer. Write it in notes.md before scanning.
For Claude: state the classification and goal in your first message, before any tool. If the category isn't given, infer it from the card or ask — don't default to a port scan.
Beat 2 — OBSERVE (enough, not everything)
Match the observation to the class. A port scan is the default for a service box, not always the right first move. Signal -> first observation:
- domain name (foo.thm) -> /etc/hosts, vhost fuzz, cert SANs (/web-recon)
- 80/443 + a real website -> browse it, view source, dirs, params (/enum-web)
- 88 + 389 + 445 -> Active Directory (/enum-ad)
- 22 + a versioned service -> version -> CVE lookup
- a downloadable file -> file/strings/exiftool/binwalk (/steg)
- a .pcap / capture file -> network-forensics skill + /pcap (tshark)
- "find the answer to..." -> OSINT / careful reading
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.
- 1mo ago First seen · 92 lines · 89 tokens per session scan A 5d3f32e1a55b
thm-trainer is a skill published in the GitHub repository pashki975/thm-claude-kit (2 stars, last pushed 2mo ago), licensed MIT. It adds 89 tokens to every session and 1,429 once invoked, about $0.0004 per session on Opus 5.5. 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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