auth-attacker

auth-attacker is an agent for Claude Code from morodomi/redteam-skills. It costs 37 tokens per session (926 once invoked), scanned A, original, MIT.

A static code checker for authentication and authorization weaknesses. It looks for hardcoded credentials, missing login checks, broken access controls, and weak session settings in common web frameworks.

In plain words
What is it for?
Use it to review Laravel, Django, Flask, or Express code for missing authentication middleware, missing permission checks, hardcoded secrets, and insecure session patterns.
Why use it?
It helps catch places where unauthenticated users may reach protected code or users may access resources they should not. It also flags credentials left directly in source code.

Agent for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the redteam-core plugin — 4 skills, 18 agents shipped together

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 agents/morodomi/redteam-skills/auth-attacker
Clone the repo
git clone --depth 1 https://github.com/morodomi/redteam-skills

Made for: Claude Code.

Or install redteam-core, the plugin that ships this one along with the rest of its 4 skills, 18 agents.

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 auth-attacker

README.md
[![agentmods](https://agentmods.dev/badge/agents/morodomi/redteam-skills/auth-attacker.svg)](https://agentmods.dev/agents/morodomi/redteam-skills/auth-attacker)
Your own site
<a href="https://agentmods.dev/agents/morodomi/redteam-skills/auth-attacker"><img src="https://agentmods.dev/badge/agents/morodomi/redteam-skills/auth-attacker.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 926 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 5.1 $0.00037 $0.00926
Opus 5 $0.00018 $0.00463
Sonnet 5 $0.00007 $0.00185
Haiku 4.5 $0.00004 $0.00093

Measured 5d ago against content hash d56c995bf702, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

auth-attacker 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.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

plugins/redteam-core/agents/auth-attacker.md · 112 lines

How it starts

The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Auth Attacker

認証・認可脆弱性を静的解析で検出するエージェント。

Detection Targets

Type Description Pattern
Hardcoded Credentials ハードコードされた認証情報 パスワード/APIキー直書き
Missing Auth Check 認証チェック漏れ ミドルウェア/ガード不在
Broken Access Control 認可チェック漏れ 権限確認なしのリソースアクセス
Weak Session 弱いセッション管理 短いセッションID、HTTPのみクッキー

Framework Detection Patterns

Framework Vulnerable Pattern Safe Pattern
Laravel Route without middleware, Auth::check() missing ->middleware('auth'), Gate/Policy
Django View without @login_required @login_required, PermissionRequiredMixin
Flask Route without @login_required Flask-Login decorators
Express Route without auth middleware passport.authenticate(), jwt middleware

Dangerous Patterns

patterns:
  # Hardcoded Credentials
  - 'password\s*=\s*["\'][^"\']+["\']'
  - 'api_key\s*=\s*["\'][^"\']+["\']'
  - 'secret\s*=\s*["\'][^"\']+["\']'
  - 'token\s*=\s*["\'][A-Za-z0-9]{20,}["\']'

  # Missing Auth (Laravel)
  - 'Route::(get|post|put|delete)\s*\([^)]+\)\s*;'

  # Missing Auth (Django)
  - 'def\s+\w+\s*\(request[^)]*\):'

  # Missing Auth (Express)
  - 'app\.(get|post|put|delete)\s*\([^,]+,\s*\(req'

  # Weak Session
  - 'session\.cookie_secure\s*=\s*False'
  - 'SESSION_COOKIE_SECURE\s*=\s*False'
  - 'cookie:\s*\{\s*secure:\s*false'

Output Format

{
  "metadata": {
    "scan_id": "<uuid>",
    "scanned_at": "<timestamp>",
    "agent": "auth-attacker"
  },
  "vulnerabilities": [
    {
      "id": "AUTH-001",
      "type": "hardcoded-credentials",
      "vulnerability_class": "hardcoded-credentials",
      "cwe_id": "CWE-798",
      "severity": "critical",
      "file": "config/database.php",
      "line": 23,
      "code": "password => 'admin123'",
      "description": "Hardcoded database password",
      "remediation": "Use environment variables"
    }
  ],
  "summary": {
    "total": 1,
    "critical": 1,
    "high": 0,
    "medium": 0,
    "low": 0
  }
}

Read the full file on GitHub · 112 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. 5d ago First seen · 112 lines · 37 tokens per session scan A d56c995bf702

Subscribe to this mod's changes

auth-attacker is an agent published in the GitHub repository morodomi/redteam-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 37 tokens to every session and 926 once invoked, about $0.0002 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.

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