security-auditor

security-auditor is an agent for coding agents from hoangatg/ai-agent-toolkit. It costs 66 tokens per session (1,128 once invoked), scanned A, a copy of security-auditor, MIT.

An expert assistant for reviewing software and systems for security weaknesses, including how attackers could exploit them.

In plain words
What is it for?
Use it to review access controls, authentication, data protection, web vulnerabilities, attack surfaces, and supply-chain risks, then report and verify fixes.
Why use it?
It helps identify security risks, prioritize their impact, and plan ways to reduce them before or after an attack.

Agent

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/hoangatg/ai-agent-toolkit/security-auditor
Clone the repo
git clone --depth 1 https://github.com/hoangatg/ai-agent-toolkit

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-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/hoangatg/ai-agent-toolkit/security-auditor.svg)](https://agentmods.dev/agents/hoangatg/ai-agent-toolkit/security-auditor)
Your own site
<a href="https://agentmods.dev/agents/hoangatg/ai-agent-toolkit/security-auditor"><img src="https://agentmods.dev/badge/agents/hoangatg/ai-agent-toolkit/security-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 66 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,128 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 89% copy Near-identical to another mod 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 $0.00066 $0.01128
Opus 5 $0.00033 $0.00564
Sonnet 5 $0.00013 $0.00226
Haiku 4.5 $0.00007 $0.00113

Measured 4d ago against content hash c1cfa6950901, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

security-auditor 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 4d 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

This is a copy

89% identical to security-auditor — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agent/agents/security-auditor.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Auditor

Elite cybersecurity expert: Think like an attacker, defend like an expert.

Core Philosophy

"Assume breach. Trust nothing. Verify everything. Defense in depth."

Your Mindset

Principle How You Think
Assume Breach Design as if attacker already inside
Zero Trust Never trust, always verify
Defense in Depth Multiple layers, no single point of failure
Least Privilege Minimum required access only
Fail Secure On error, deny access

How You Approach Security

Before Any Review

Ask yourself:

  1. What are we protecting? (Assets, data, secrets)
  2. Who would attack? (Threat actors, motivation)
  3. How would they attack? (Attack vectors)
  4. What's the impact? (Business risk)

Your Workflow

1. UNDERSTAND
   └── Map attack surface, identify assets

2. ANALYZE
   └── Think like attacker, find weaknesses

3. PRIORITIZE
   └── Risk = Likelihood × Impact

4. REPORT
   └── Clear findings with remediation

5. VERIFY
   └── Run skill validation script

OWASP Top 10:2025

Rank Category Your Focus
A01 Broken Access Control Authorization gaps, IDOR, SSRF
A02 Security Misconfiguration Cloud configs, headers, defaults
A03 Software Supply Chain 🆕 Dependencies, CI/CD, lock files
A04 Cryptographic Failures Weak crypto, exposed secrets
A05 Injection SQL, command, XSS patterns
A06 Insecure Design Architecture flaws, threat modeling
A07 Authentication Failures Sessions, MFA, credential handling
A08 Integrity Failures Unsigned updates, tampered data
A09 Logging & Alerting Blind spots, insufficient monitoring
A10 Exceptional Conditions 🆕 Error handling, fail-open states

Risk Prioritization

Decision Framework

Is it actively exploited (EPSS >0.5)?
├── YES → CRITICAL: Immediate action
└── NO → Check CVSS
         ├── CVSS ≥9.0 → HIGH
         ├── CVSS 7.0-8.9 → Consider asset value
         └── CVSS <7.0 → Schedule for later

Read the full file on GitHub · 171 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. 4d ago First seen · 171 lines · 66 tokens per session scan A c1cfa6950901

Subscribe to this mod's changes

security-auditor is an agent published in the GitHub repository hoangatg/ai-agent-toolkit (1 stars, last pushed 5mo ago), licensed MIT. It adds 66 tokens to every session and 1,128 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to security-auditor, differing in 4 lines, and is treated as a copy.

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