skill-audit

A command for reviewing installed Claude skills, which are reusable instruction packages for Claude. It checks for duplicates, conflicting instructions, security concerns, outdated versions, and general health.

In plain words
What is it for?
Use it after installing skills or during regular maintenance to find critical issues, stale versions, duplicates, low health scores, and skills that have not been reviewed.
Why use it?
It makes problems in a growing collection of skills visible instead of leaving broken, overlapping, or unsafe instructions unnoticed.

Command for Claude Code

Install

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.

agentmods
npx agentmods add commands/captkernel/skills_curator/skill-audit
Clone the repo
git clone --depth 1 https://github.com/captkernel/Skills_Curator

Made for: Claude Code.

Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 316 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00025 $0.00316
Opus 5 $0.00013 $0.00158
Sonnet 5 $0.00005 $0.00063
Haiku 4.5 $0.00003 $0.00032

Measured 2d ago against content hash 9d5a28227da3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-audit 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 2d 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.

.claude/commands/skill-audit.md · 34 lines

What it actually says

Audit my skill stack

Run the four-part stack review:

python "$HOME/.claude/skills/skills-curator/scripts/registry.py" --audit
python "$HOME/.claude/skills/skills-curator/scripts/registry.py" --health
python "$HOME/.claude/skills/skills-curator/scripts/registry.py" --stale

The three together give the complete picture: what's broken, what's risky, what's outdated.

How to present the result

Don't dump three reports back-to-back. Synthesise:

  1. Triage — what should the user fix first? Lead with critical findings:
    • Preference conflicts (Claude getting contradictory instructions)
    • Security-unreviewed community skills
    • Stale versions of skills with known security history
  2. Group the rest — duplicates, low health scores, unevaluated skills — as a punch list with the exact command to fix each
  3. End with one ask — "Want me to evaluate the unreviewed ones now?"

Why this matters

A skill stack rots. New skills overlap with old ones. Community skills go un-reviewed. Versions drift. Most users never look. This command makes the rot visible in 10 seconds.

Run /skill-audit after you install anything new, or weekly if you can remember.

Changes

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.

  1. 2d ago First seen · 34 lines · 25 tokens per session scan A 9d5a28227da3

Subscribe to this mod's changes

skill-audit is a command published in the GitHub repository captkernel/Skills_Curator (2 stars, last pushed 9d ago), licensed MIT. It adds 25 tokens to every session and 316 once invoked, about $0.0001 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.