Skill Audit

Skill Audit is a skill for Claude Code, Codex from wrg32786/aigent-os. It costs 53 tokens per session (881 once invoked), scanned A, original, MIT.

A catalogue audit that reviews installed coding-agent skills, their usage, and whether their descriptions still match how they are triggered.

In plain words
What is it for?
It is for reviewing the skill library, deciding what to retire, and identifying new skills to create.
Why use it?
It helps you find unused skills, misleading descriptions, and recurring needs that are not covered by any skill.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Good fit It is for reviewing the skill library, deciding what to retire, and identifying new skills to create.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wrg32786/aigent-os/skill-audit
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.

Any agent
npx skills add wrg32786/aigent-os --skill skill-audit
Clone the repo
git clone --depth 1 https://github.com/wrg32786/aigent-os

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for Skill Audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/wrg32786/aigent-os/skill-audit.svg)](https://agentmods.dev/skills/wrg32786/aigent-os/skill-audit)
Your own site
<a href="https://agentmods.dev/skills/wrg32786/aigent-os/skill-audit"><img src="https://agentmods.dev/badge/skills/wrg32786/aigent-os/skill-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 881 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00053 $0.00881
Opus 5 $0.00026 $0.00441
Sonnet 5 $0.00011 $0.00176
Haiku 4.5 $0.00005 $0.00088

Measured 6d ago against content hash b9d39327c258, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 6d 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.

skills/skill-audit/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Audit

Auditing the skill catalog itself. As the install grows from 5 skills to 50, the catalog goes from "I remember every skill" to "I have no idea what's in here." This skill makes the catalog legible to its owner.

When to use

  • Once a quarter — hygiene pass
  • When Caddy starts surfacing the wrong skill repeatedly (signals a trigger-pattern mismatch)
  • When a new feature feels like it should be a skill but you can't remember if you already built one
  • After importing a skill bundle from another principal (e.g., from a public aigent-OS release)
  • When considering retiring a project area and want to know which skills go with it

What it produces

A markdown report with four sections:

Section 1 — All skills, sorted by last invocation

| Skill | Last used | Total invocations (90d) | Description |
|---|---|---|---|
| /open | today | 47 | Start session, load vault context |
| /close | today | 47 | End session, commit memory |
| /caddy-enroll | 5 days ago | 12 | Add a skill to Caddy index |
| /skill-name | 23 days ago | 3 | Example skill entry |
| /old-experiment | 89 days ago | 1 | DEAD — flagged for retirement |

Section 2 — Dead skills (last used >60 days, <3 total invocations)

These are candidates for retirement. List with:

  • Skill name + path
  • Last-used date
  • Total invocations
  • Recommendation: keep / archive / delete

Section 3 — Caddy mismatch detection

For each skill, compare the trigger keywords in .claude/skill-index.json against the actual prompt patterns that preceded each invocation. Flag mismatches:

⚠️ /channel-audit
   Triggers: "channel status", "YPP progress", "kill a channel"
   Actual prompts that led to invocation: "how are channels doing", "performance check", "review channels"
   Suggested triggers to ADD: "performance check", "review channels", "how are channels doing"

Section 4 — Capability gaps

Heuristic: scan recent prompts (last 30 days) where Caddy fired no hint and the principal manually invoked Read/Bash/Grep instead of a skill. Cluster by keywords. If a cluster has 3+ instances, flag as a capability gap.

Read the full file on GitHub · 83 lines

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. 6d ago First seen · 83 lines · 53 tokens per session scan A b9d39327c258

Subscribe to this mod's changes

Skill Audit is a skill published in the GitHub repository wrg32786/aigent-os (18 stars, last pushed today), licensed MIT. It adds 53 tokens to every session and 881 once invoked, about $0.0003 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 2026-09-01.