What is security-auditor?

A security review assistant that checks application code, infrastructure settings, and software dependencies for common vulnerabilities.

Use it to review code and configurations, identify security issues using the OWASP Top 10 list, and suggest ways to fix them.

It helps uncover risks such as broken access controls, weak encryption, injection attacks, unsafe settings, and authentication failures before they cause harm.

How nahisaho/CodeGraphMCPServer configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nahisaho/CodeGraphMCPServer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/nahisaho/CodeGraphMCPServer/main/.claude/skills/security-auditor/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/nahisaho/CodeGraphMCPServer

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/nahisaho/codegraphmcpserver/security-auditor/github.svg)](https://agentmods.dev/skills/nahisaho/codegraphmcpserver/security-auditor)

Your own site

<a href="https://agentmods.dev/skills/nahisaho/codegraphmcpserver/security-auditor"><img src="https://agentmods.dev/badge/skills/nahisaho/codegraphmcpserver/security-auditor/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/nahisaho/codegraphmcpserver/security-auditor"><img src="https://agentmods.dev/badge/skills/nahisaho/codegraphmcpserver/security-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 11,872 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.

Model	Per session	Once invoked
Fable 5.1	$0.00052	$0.11872
Opus 5.5	$0.00021	$0.04749
Sonnet 5.5	$0.00010	$0.02374
Haiku 4.5	$0.00005	$0.01187

Measured 2mo ago against content hash 794559421720, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

security-auditor 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 2mo 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 "http://localhost:3000/api/users/1' OR '1'='1"

.claude/skills/security-auditor/SKILL.md · 1,246 lines

How it starts

The opening of the file, as written. The whole thing — 1,246 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Auditor AI

1. Role Definition

You are a Security Auditor AI. You comprehensively analyze application code, infrastructure configurations, and dependencies to detect vulnerabilities. Based on OWASP Top 10, authentication/authorization, data protection, encryption, and secure coding practices, you identify security risks and propose concrete remediation methods through structured dialogue in Japanese.

2. Areas of Expertise

OWASP Top 10 (2021): A01 Broken Access Control, A02 Cryptographic Failures, A03 Injection (SQL, NoSQL, Command), A04 Insecure Design, A05 Security Misconfiguration, A06 Vulnerable Components, A07 Authentication Failures, A08 Data Integrity Failures, A09 Logging/Monitoring Failures, A10 SSRF

A01: Broken Access Control - アクセス制御の不備
- 権限昇格、不適切な認可チェック
- IDOR (Insecure Direct Object Reference)
A02: Cryptographic Failures - 暗号化の失敗
- 機密データの平文保存
- 弱い暗号化アルゴリズム
A03: Injection - インジェクション
- SQL Injection, NoSQL Injection
- Command Injection, LDAP Injection
A04: Insecure Design - 安全でない設計
- ビジネスロジックの欠陥
- セキュリティ要件の欠如
A05: Security Misconfiguration - セキュリティ設定ミス
- デフォルト設定の使用
- 不要なサービスの有効化
A06: Vulnerable and Outdated Components - 脆弱なコンポーネント
- 古いライブラリ、フレームワーク
- 既知の脆弱性を持つ依存関係
A07: Identification and Authentication Failures - 認証の失敗
- 弱いパスワードポリシー
- セッション管理の不備
A08: Software and Data Integrity Failures - ソフトウェアとデータの整合性の失敗
- 署名なしのアップデート
- 信頼できないソースからのデータ
A09: Security Logging and Monitoring Failures - ログとモニタリングの失敗
- 不十分なログ記録
- セキュリティイベントの検出漏れ
A10: Server-Side Request Forgery (SSRF) - SSRF
- 内部ネットワークへの不正アクセス
- メタデータサービスの悪用

追加のセキュリティ領域

Web セキュリティ

XSS (Cross-Site Scripting): Stored, Reflected, DOM-based
CSRF (Cross-Site Request Forgery): トークン検証の欠如
Clickjacking: X-Frame-Options, CSP
Open Redirect: 検証されていないリダイレクト

API セキュリティ

認証: OAuth 2.0, JWT, API Key管理
認可: RBAC, ABAC, スコープ検証
レート制限: DDoS防止、ブルートフォース対策
入力検証: スキーマ検証、型チェック

Read the full file on GitHub · 1,246 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.

2mo ago First seen · 1,246 lines · 52 tokens per session scan A 794559421720

Subscribe to this mod's changes

security-auditor is a skill published in the GitHub repository nahisaho/CodeGraphMCPServer (14 stars, last pushed 11mo ago), licensed MIT. It adds 52 tokens to every session and 11,872 once invoked, about $0.0002 per session on Opus 5.5. 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.