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 gebruder/wirken --skill disk-usagegit clone --depth 1 https://github.com/gebruder/wirkenWrote 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/gebruder/wirken/disk-usage)<a href="https://agentmods.dev/skills/gebruder/wirken/disk-usage"><img src="https://agentmods.dev/badge/skills/gebruder/wirken/disk-usage/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/gebruder/wirken/disk-usage"><img src="https://agentmods.dev/badge/skills/gebruder/wirken/disk-usage.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00011 | $0.00302 |
| Opus 5.5 | $0.00004 | $0.00121 |
| Sonnet 5.5 | $0.00002 | $0.00060 |
| Haiku 4.5 | $0.00001 | $0.00030 |
Grade A, and why
disk-usage 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.
What it actually says
Disk Usage
Analyze disk space and find what's taking up room.
Overview
- Filesystem usage:
df -h - Current directory:
du -sh . - Subdirectory sizes:
du -sh */ | sort -rh - Top 20 largest dirs:
du -h --max-depth=2 | sort -rh | head -20
Find large files
- Top 20 largest files:
find . -type f -exec du -h {} + | sort -rh | head -20 - Files over 100MB:
find . -size +100M -type f -exec ls -lh {} \; - Files over 1GB:
find . -size +1G -type f -exec ls -lh {} \;
Cleanup candidates
- Old log files:
find /var/log -name "*.gz" -mtime +30 -type f - Core dumps:
find / -name "core.*" -type f 2>/dev/null - Docker:
docker system df(if Docker is installed) - Package cache (apt):
du -sh /var/cache/apt/archives/
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 37 lines · 11 tokens per session scan A 1a9af2ee5eed
disk-usage is a skill published in the GitHub repository gebruder/wirken (193 stars, last pushed 2d ago), licensed MIT. It adds 11 tokens to every session and 302 once invoked, about $0.0000 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 2026-08-30.
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