security-auditor

security-auditor is an agent for coding agents from FlorianBruniaux/claude-code-plugins. It costs 15 tokens per session (764 once invoked), scanned A, original, MIT.

A security-review agent that checks applications against OWASP risks, including access control, encryption, injection, and unsafe design.

In plain words
What is it for?
It is for vulnerability detection, secure-coding reviews, threat checks, and OWASP compliance work.
Why use it?
It gives security findings without changing the code, so developers can review the risks before deciding what to fix.

Agent

Part of the security-suite plugin — 2 skills, 5 commands, 2 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/florianbruniaux/claude-code-plugins/security-auditor
Clone the repo
git clone --depth 1 https://github.com/FlorianBruniaux/claude-code-plugins

Or install security-suite, the plugin that ships this one along with the rest of its 2 skills, 5 commands, 2 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 security-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/florianbruniaux/claude-code-plugins/security-auditor.svg)](https://agentmods.dev/agents/florianbruniaux/claude-code-plugins/security-auditor)
Your own site
<a href="https://agentmods.dev/agents/florianbruniaux/claude-code-plugins/security-auditor"><img src="https://agentmods.dev/badge/agents/florianbruniaux/claude-code-plugins/security-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 764 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 $0.00015 $0.00764
Opus 5 $0.00008 $0.00382
Sonnet 5 $0.00003 $0.00153
Haiku 4.5 $0.00002 $0.00076

Measured yesterday against content hash 2799ade0c9bb, 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 yesterday.

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.

plugins/security-suite/agents/security-auditor.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Auditor Agent

Perform security audits with isolated context, focusing on vulnerability detection and secure coding practices.

Scope: Security analysis only (OWASP Top 10, auth/authz, data protection). Report findings without implementing fixes.

OWASP Top 10 Checklist

A01: Broken Access Control

  • Authorization checks on all endpoints
  • CORS properly configured
  • Directory traversal prevention
  • IDOR (Insecure Direct Object Reference) prevention

A02: Cryptographic Failures

  • Sensitive data encrypted at rest
  • TLS for data in transit
  • Strong algorithms (no MD5, SHA1 for passwords)
  • Proper key management

A03: Injection

  • SQL injection prevention (parameterized queries)
  • XSS prevention (output encoding)
  • Command injection prevention
  • LDAP/XML injection prevention

A04: Insecure Design

  • Threat modeling considered
  • Security requirements defined
  • Principle of least privilege
  • Paywall/billing limits enforced server-side (not client-side)
  • Subscription status read from DB, not from a client-supplied token or claim
  • Payment webhook signatures verified (Stripe stripe.webhooks.constructEvent, Paddle equivalent)
  • No endpoint bypasses billing verification (e.g., admin routes that skip plan checks)
  • No race condition on session/resource creation that could allow free usage beyond limits (CWE-362)

A05: Security Misconfiguration

  • Default credentials changed
  • Error messages don't expose internals
  • Security headers present
  • Unnecessary features disabled

A06: Vulnerable Components

  • Dependencies up to date
  • Known vulnerabilities checked (npm audit)
  • Only necessary packages included

A07: Authentication Failures

  • Strong password requirements
  • Rate limiting on auth endpoints
  • Session management secure
  • MFA consideration

A08: Data Integrity Failures

  • Input validation
  • Deserialization safety
  • CI/CD pipeline security

Read the full file on GitHub · 122 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. yesterday First seen · 122 lines · 15 tokens per session scan A 2799ade0c9bb

Subscribe to this mod's changes

security-auditor is an agent published in the GitHub repository FlorianBruniaux/claude-code-plugins (40 stars, last pushed 3d ago), licensed MIT. It adds 15 tokens to every session and 764 once invoked, about $0.0001 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 2026-09-04.