security-auditor

security-auditor is a skill for Claude Code, Codex from lsantosweb/codex-agents-skills-kit. It costs 35 tokens per session (353 once invoked), scanned A, original, MIT.

A security-review guide for software projects, covering login, permissions, vulnerabilities, dependencies, secrets, and deployment settings. OWASP is a widely used source of web-application security guidance.

In plain words
What is it for?
Use it for threat modeling, authentication and authorization reviews, OWASP-style audits, dependency checks, secrets reviews, and pre-launch security checks.
Why use it?
It provides a structured way to find security weaknesses before they become incidents, including problems caused by unsafe defaults or third-party packages.

Skill for Claude CodeCodex

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 skills/lsantosweb/codex-agents-skills-kit/security-auditor
Any agent
npx skills add lsantosweb/codex-agents-skills-kit --skill security-auditor
Clone the repo
git clone --depth 1 https://github.com/lsantosweb/codex-agents-skills-kit

Made for: Claude Code, Codex.

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/skills/lsantosweb/codex-agents-skills-kit/security-auditor.svg)](https://agentmods.dev/skills/lsantosweb/codex-agents-skills-kit/security-auditor)
Your own site
<a href="https://agentmods.dev/skills/lsantosweb/codex-agents-skills-kit/security-auditor"><img src="https://agentmods.dev/badge/skills/lsantosweb/codex-agents-skills-kit/security-auditor.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 353 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 $0.00035 $0.00353
Opus 5 $0.00017 $0.00177
Sonnet 5 $0.00007 $0.00071
Haiku 4.5 $0.00003 $0.00035

Measured 5d ago against content hash 4adc46f54c5e, 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 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.

.codex/skills/security-auditor/SKILL.md · 62 lines

What it actually says

When to use

Use this skill for:

  • authentication and authorization review
  • vulnerability assessment
  • OWASP-style audits
  • supply chain or dependency review
  • security headers and configuration hardening
  • secrets handling
  • pre-launch or pre-deploy security checks

Core operating rules

  • Assume breach. Trust nothing by default.
  • Prioritize issues by impact and exploitability.
  • Review assets, actors, attack surface, and likely abuse paths before recommending fixes.
  • Prefer defense in depth instead of single-point controls.
  • Fail secure on errors.
  • Fix root causes, not just symptoms.

Review checklist

  • broken access control
  • auth/session handling
  • injection risk
  • cryptographic mistakes
  • secrets exposure
  • dependency and lockfile hygiene
  • security misconfiguration
  • logging and alerting blind spots
  • insecure defaults and fail-open behavior

Workflow

  1. Identify the assets and attack surface.
  2. Review the most likely abuse paths.
  3. Prioritize findings by severity and business risk.
  4. Recommend remediations that fit the stack.
  5. Run or document validation steps when available.

Mandatory checks

  • secrets are not hardcoded
  • auth and authz are evaluated separately
  • dependencies and lockfiles are reviewed when in scope
  • headers and configuration are checked when web-facing
  • high-severity findings are clearly marked

Output format

Report:

  • scope reviewed
  • critical/high/medium findings
  • likely exploitation path
  • remediation guidance
  • validation steps or commands
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 · 62 lines · 35 tokens per session scan A 4adc46f54c5e

Subscribe to this mod's changes

security-auditor is a skill published in the GitHub repository lsantosweb/codex-agents-skills-kit (2 stars, last pushed 5mo ago), licensed MIT. It adds 35 tokens to every session and 353 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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