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 khendzel/skills-janitor --skill janitor-reportgit clone --depth 1 https://github.com/khendzel/skills-janitorWrote 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/khendzel/skills-janitor/janitor-report)<a href="https://agentmods.dev/skills/khendzel/skills-janitor/janitor-report"><img src="https://agentmods.dev/badge/skills/khendzel/skills-janitor/janitor-report/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/khendzel/skills-janitor/janitor-report"><img src="https://agentmods.dev/badge/skills/khendzel/skills-janitor/janitor-report.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 90 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00055 | $0.01368 |
| Opus 5 | $0.00028 | $0.00684 |
| Sonnet 5 | $0.00011 | $0.00274 |
| Haiku 4.5 | $0.00006 | $0.00137 |
Grade B, and why
janitor-report scanned grade B with 1 finding 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 11d 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.
Enumerates other installed skillsmediumAgent snooping
Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.
**Solution**: The plugin is installed under a different root. Locate it with `ls ~/.claude/skills` or check the plugin cache, then run the scripts from their actual location. How it starts
The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Health Report
Generate a comprehensive health report combining inventory, quality checks, duplicate detection, and broken skill findings.
Overview
One report covering every place a skill lives: user, project, codex, plugin, and source scopes. Plugin skills appear with their full invocation name (e.g. marketing-skills:image, figma:figma-use) — these were invisible to the v1.2 report. The scan JSON also includes an agents array (subagents from ~/.claude/agents — their descriptions are always-loaded too) and per-plugin update_available (installed commit vs marketplace HEAD) — surface stale plugins and heavy agents in the report.
Modes:
/janitor-report(default) — full health check: inventory + lint + duplicates + broken/janitor-report --brief— inventory only (replaces the old/janitor-audit)
Prerequisites
- Claude Code with the skills-janitor plugin installed (provides
scripts/scan.sh,lint.sh,detect_dupes.sh) - bash 3.2+ (the stock macOS bash works; no external dependencies)
- Read access to
~/.claude/skills,~/.claude/agents, and installed plugin metadata - No authentication or API keys required — the scripts read local files only
Instructions
Step 1: Run the scripts
Full report:
bash ~/.claude/skills/skills-janitor/scripts/scan.sh
bash ~/.claude/skills/skills-janitor/scripts/lint.sh
bash ~/.claude/skills/skills-janitor/scripts/detect_dupes.sh
Brief mode (inventory only):
bash ~/.claude/skills/skills-janitor/scripts/scan.sh
Step 2: What each script covers
- Inventory (scan.sh) — all skills across scopes, symlink status, frontmatter fields, line counts;
agentsandplugins(withupdate_available) arrays;broken_symlinkscount. - Quality checks (lint.sh) — Critical: broken symlinks, missing SKILL.md, missing frontmatter. Warning: missing/empty name or description, description too short/long, missing version. Info: no body content, no Gotchas section, large files.
- Duplicate detection (detect_dupes.sh) — name collisions (two distinct skills with the same qualified name at different paths) and description overlap (Jaccard similarity >30%), with cross-scope user-vs-plugin pairs explicitly surfaced (e.g.
marketing-seo-audit(user) ↔marketing-skills:seo-audit(plugin)).
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.
- 11d ago First seen · 118 lines · 55 tokens per session scan B f1c95282601e
janitor-report is a skill published in the GitHub repository khendzel/skills-janitor (117 stars, last pushed 1mo ago), licensed MIT. It adds 55 tokens to every session and 1,368 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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