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 ruslanlap/cavemenko --skill cavemenko-compressgit clone --depth 1 https://github.com/ruslanlap/cavemenkoWrote 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/ruslanlap/cavemenko/cavemenko-compress)<a href="https://agentmods.dev/skills/ruslanlap/cavemenko/cavemenko-compress"><img src="https://agentmods.dev/badge/skills/ruslanlap/cavemenko/cavemenko-compress/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/ruslanlap/cavemenko/cavemenko-compress"><img src="https://agentmods.dev/badge/skills/ruslanlap/cavemenko/cavemenko-compress.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 | $0.00041 | $0.00480 |
| Opus 5 | $0.00020 | $0.00240 |
| Sonnet 5 | $0.00008 | $0.00096 |
| Haiku 4.5 | $0.00004 | $0.00048 |
Grade A, and why
cavemenko-compress 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 9d 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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 9d ago First seen · 62 lines · 41 tokens per session scan A c036e6e0094f
cavemenko-compress is a skill published in the GitHub repository ruslanlap/cavemenko (4 stars, last pushed yesterday), with no licence file. It adds 41 tokens to every session and 480 once invoked, about $0.0002 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.
Other skills, from other repositories
genshijin-crew
A guide for deciding when to delegate coding work to three Japanese-style compressed subagents: one for finding code, one for small edits, and one for reviewing changes. It explains when to use them instead of working in the main thread or using a general exploration agent.
genshijin-commit
A guide for writing short Git commit messages in Conventional Commits format, a shared style that labels changes such as features, fixes, tests, and documentation. It supports Japanese and English and emphasizes explaining why a change was made.
genshijin-help
A one-time quick-reference card for the genshijin writing modes and related commands. Genshijin changes prose into shorter, keyword-heavy text to reduce the amount of text an AI must read.
genshijin-review
A compact pull-request review format that writes one actionable finding per line in Japanese or English.
genshijin-stats
A command and hook that displays token usage for the current Claude Code session, along with estimated savings, using session logs. It can also show shared totals or totals for a chosen time period.
genshijin
A communication style that gives very short answers while retaining the technical meaning.