security-precheck

security-precheck is a skill for Claude Code from LeeYudok/agents-scaffold. It costs 99 tokens per session (1,724 once invoked), scanned A, original, MIT.

A pre-release security check for reviewing code and agent configuration before an external security audit. It scans for issues such as exposed secrets, missing authentication, and personal-data logging, then groups findings by urgency.

In plain words
What is it for?
Use it to inspect authentication, sessions, cross-origin settings, data access, logging, permissions, and prompt-injection risks, and to split findings into fixable issues for parallel work.
Why use it?
It helps find and fix security problems before an outside team reports them. This gives developers a clear list of urgent and lower-priority issues to address.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths.

Good fit Use it to inspect authentication, sessions, cross-origin settings, data access, logging, permissions…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leeyudok/agents-scaffold/security-precheck
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 LeeYudok/agents-scaffold --skill security-precheck
Clone the repo
git clone --depth 1 https://github.com/LeeYudok/agents-scaffold

Made for: Claude Code.

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 security-precheck

README.md
[![agentmods](https://agentmods.dev/badge/skills/leeyudok/agents-scaffold/security-precheck.svg)](https://agentmods.dev/skills/leeyudok/agents-scaffold/security-precheck)
Your own site
<a href="https://agentmods.dev/skills/leeyudok/agents-scaffold/security-precheck"><img src="https://agentmods.dev/badge/skills/leeyudok/agents-scaffold/security-precheck.svg" alt="Measured on agentmods" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,724 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00099 $0.01724
Opus 5 $0.00049 $0.00862
Sonnet 5 $0.00020 $0.00345
Haiku 4.5 $0.00010 $0.00172

Measured 7d ago against content hash 666d03eea7d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

security-precheck scanned grade A 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 7d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -u "${SONAR_TOKEN}:" \
.claude/skills/security-precheck/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

보안 사전점검 (외부 감사 대비)

외부 보안팀이 쓸 기준과 같은 기준으로 먼저 훑어서 고쳐두는 워크플로.

1. 스캔 (병렬)

동시 실행:

Agent(subagent_type: "security-audit") — P0 코드 규칙 12항목(하드코딩 시크릿·인증누락·PII로깅 등)
  + 에이전트 설정 8항목(.claude/훅·MCP·permissions·프롬프트 인젝션) grep 기반 스캔
# SonarQube 보안 핫스팟 (TO_REVIEW만) — sonar-project.properties 없으면 이 단계는
# 스킵하고 스킵 사실만 보고. 호스트/토큰 하드코딩 금지:
# 환경변수 $SONAR_HOST_URL / $SONAR_TOKEN 사용.
if [ -f sonar-project.properties ]; then
  key=$(grep 'sonar.projectKey' sonar-project.properties | cut -d= -f2-)
  curl -s -u "${SONAR_TOKEN}:" \
    "${SONAR_HOST_URL}/api/hotspots/search?projectKey=$key&status=TO_REVIEW&ps=500" \
    | python3 -c "import sys,json; d=json.load(sys.stdin); print('TO_REVIEW:', len(d['hotspots'])); [print(h['ruleKey'], h['component'], h.get('line','')) for h in d['hotspots']]"
fi

security-audit 프롬프트에는 이 프로젝트의 구체 맥락(인증 방식, 세션 처리, CORS 설정, 데이터 접근 계층, PII 필드)을 짚어주면 결과 품질이 좋아짐 — 기억으로 서술하지 말고 스킬 실행 시점에 레포의 인증/세션/CORS/데이터접근 진입점을 grep 으로 확인해서 실제 발견한 것을 반영.

2. 등급 분류 + 보고

  • P0(치명적): 즉시 에스컬레이션 대상. 하드코딩 시크릿, 인증 우회, SQL 인젝션, .env git 유출 등.
  • P1(권장 개선): 이 스킬의 주 타겟. rate-limit 부재, 쿠키 속성 누락, 상수시간 비교 누락, 과도한 permission allow, PII 로깅 등.
  • 통과: 확인했지만 문제없는 항목도 명시(무엇을 확인했는지 신뢰도 근거로).

표 형식으로 보고: P0 N건 / P1 N건 / 통과 N건.

3. 이슈 등록 (P1 이상만, 트리비얼 제외)

같은 파일/같은 주제끼리 묶어서 이슈 하나로 — 발견사항당 이슈 남발 금지. 예: 같은 인증 컨트롤러에서 발견된 rate-limit·쿠키속성·상수시간비교 3건은 이슈 1개로.

# forge CLI 는 rules/forge.md 기준
gh issue create -t "<제목>" -b "<사전점검 배경 + 구체적 발견사항 + 관련 파일>"       # GitHub
glab issue create -t "<제목>" -d "<사전점검 배경 + 구체적 발견사항 + 관련 파일>" -y  # GitLab

로컬 설정(.claude/settings.local.json allow 트림, MCP 권한 재검토 등)은 이슈 없이 바로 처리 — 코드가 아니라 로컬 스코프 설정이라 P1 워크플로 대상이 아님.

4. 병렬 처리 (모델 티어 분산)

이슈를 성격별로 나눠 동시에 Agent 호출. 같은 파일을 건드리는 이슈는 한 에이전트에 몰아서 — 별도 에이전트로 쪼개면 같은 파일 동시수정 충돌.

작업 성격 subagent_type model
인증/암호/세션 등 보안 판단이 들어가는 백엔드 수정 sdlc-developer opus
일반 구현(로깅/검증/설정) sdlc-developer sonnet
조사만 하고 근거 있으면 유지, 없으면 수정하는 단순 검토 general-purpose haiku

Read the full file on GitHub · 107 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. 7d ago First seen · 107 lines · 99 tokens per session scan A 666d03eea7d0

Subscribe to this mod's changes

security-precheck is a skill published in the GitHub repository LeeYudok/agents-scaffold (25 stars, last pushed 8d ago), licensed MIT. It adds 99 tokens to every session and 1,724 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.