cc-usage-audit

cc-usage-audit is a skill for Claude Code, Codex from greatSumini/cc-system. It costs 172 tokens per session (1,235 once invoked), scanned A, original, MIT.

An audit method for analyzing a developer’s Claude Code prompt history, including usage patterns, working principles, and the surrounding development process.

In plain words
What is it for?
Use it to extract user prompts from project transcripts, group and measure their topics, identify development principles with quotations, and produce a prioritized audit of the supporting process.
Why use it?
It replaces vague impressions with counts and direct examples from actual prompts. It also exposes weaknesses in the project’s automation, checks, and workflow.

Skill for Claude CodeCodex

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 skills/greatsumini/cc-system/cc-usage-audit
Any agent
npx skills add greatSumini/cc-system --skill cc-usage-audit
Clone the repo
git clone --depth 1 https://github.com/greatSumini/cc-system

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 cc-usage-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/greatsumini/cc-system/cc-usage-audit.svg)](https://agentmods.dev/skills/greatsumini/cc-system/cc-usage-audit)
Your own site
<a href="https://agentmods.dev/skills/greatsumini/cc-system/cc-usage-audit"><img src="https://agentmods.dev/badge/skills/greatsumini/cc-system/cc-usage-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 172 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,235 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 $0.00172 $0.01235
Opus 5 $0.00086 $0.00617
Sonnet 5 $0.00034 $0.00247
Haiku 4.5 $0.00017 $0.00123

Measured 5d ago against content hash 322bebac1bab, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cc-usage-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 5d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/extract-prompts.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/skills/cc-usage-audit/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

cc-usage-audit

사용자의 실제 프롬프트(지어낸 것이 아니라 transcript에서 추출한 발화)를 원자료로, 사용 패턴 → 개발 철학 → 메타 시스템 audit → 개선점 발굴까지 정량적·추적가능하게 수행하는 skill.

핵심 원칙(어기지 말 것):

  • 철학을 지어내지 말 것 — 사용자의 발화에서 추출하고 직접 인용으로 뒷받침.
  • "자주/많이" 대신 수치로 ("70건 중 12건, 17%").
  • 사용자가 최종 검증자 — 추출한 철학은 가설이며 어긋날 수 있음을 명시.
  • 이 skill은 발굴·문서화까지. 발견한 문제를 즉시 고치지 않는다(사용자가 별도 지시하거나 다른 skill로 이어감).

상세 절차·휴리스틱·템플릿은 references/methodology.md 에 있다. 분석을 시작하기 전에 반드시 읽을 것.

워크플로

1. 프롬프트 추출

대상 프로젝트의 transcript 디렉터리를 찾아 사용자 프롬프트만 뽑는다. 스크립트가 harness 주입(tool 결과·system-reminder·task-notification·command stdout)을 걸러낸다.

SK=.claude/skills/cc-usage-audit/scripts/extract-prompts.mjs   # cc-system repo 기준 경로

# (선택) 어떤 프로젝트 dir들이 있는지 + 프롬프트 수 먼저 보기
node "$SK" --list

# 분석 대상 프로젝트의 cwd(또는 worktree)에서 실행하거나 --match로 지정.
# 한 프로젝트가 여러 worktree에 걸쳐 있으면 공유 토큰(repo명/worktree 그룹id)으로 매칭.
node "$SK" --match <substr> --json /tmp/cc-prompts.json

--match 없이 실행하면 현재 git 루트에서 토큰을 자동 도출한다. 매칭 0건이면 --list로 후보를 확인하고 적절한 substr를 골라 재실행한다(막혀도 사용자에게 묻지 말고 --list 결과로 스스로 판단).

스크립트는 프롬프트 수·길이 분포·시간대·워크트리별 분포와 모든 프롬프트 전문을 출력한다. 이걸 다 읽는다.

2. 사용 패턴 정량화

methodology.md §1의 분류 축으로 프롬프트를 주제별로 묶어 빈도를 센다(반복 잡일 / 메타 의문 / 비판적 논쟁 / 재확인 / 언어교정 / 재전송 / 시간대 집중). 간단한 빈도는 /tmp/cc-prompts.json에 대고 한 줄 node -e로 센다.

3. 개발 철학 추출

신호에서 반복되는 가치를 5~9개 원칙으로 압축한다. 각 원칙 = 주장 / 근거 (직접 인용+날짜) / 함의. 긴장하는 원칙쌍은 그 긴장을 해소하는 규칙까지. (methodology.md §2 템플릿 사용.)

4. 메타 시스템 audit

추출한 철학을 의심 질문 + 검증 방법 + 판정으로 바꿔 대상 산출물(게이트/ 하니스/CI/프로세스 문서)에 적용한다. 정량 측정(LOC, 비율, 실행비용) → 의심 질문 → 반박 테스트 → 판정(KEEP/TRIM/MOVE-TO-TEST/DELETE/DEFER). 검증 약화로 통과시키는 것은 절대 금지. (methodology.md §3.)

프로젝트에 이미 audit 지침(예: guidelines/meta-system-audit.md)이 있으면 단일 출처로 삼고 중복 생성 금지.

5. 개선점 발굴 + 우선순위 + 보고

audit + 패턴 신호로 개선점을 뽑아 영향 × 근거강도로 정렬하고, 각 항목에 신뢰도 라벨(높음/중간/참고)을 붙인다. 5개 관점(품질게이트/하니스/코드구조/ 기능/skill) 또는 프로젝트에 맞는 축으로 표를 만든다. (methodology.md §4·§5.)

마지막에 사용자에게: 추출한 철학을 프로젝트 지침 문서로 남길지, 발굴한 개선점 중 무엇을 먼저 실행할지 제안한다(즉시 수정은 하지 않음).

Read the full file on GitHub · 79 lines

Files

What ships with it

2 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.

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. 5d ago First seen · 79 lines · 172 tokens per session scan A 322bebac1bab

Subscribe to this mod's changes

cc-usage-audit is a skill published in the GitHub repository greatSumini/cc-system (436 stars, last pushed 2mo ago), licensed MIT. It adds 172 tokens to every session and 1,235 once invoked, about $0.0009 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 2026-08-30.

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