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.
git clone --depth 1 https://github.com/felvieira/claude-skills-fvWrote 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.
[](https://agentmods.dev/agents/felvieira/claude-skills-fv/security-auditor)<a href="https://agentmods.dev/agents/felvieira/claude-skills-fv/security-auditor"><img src="https://agentmods.dev/badge/agents/felvieira/claude-skills-fv/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.
<a href="https://agentmods.dev/agents/felvieira/claude-skills-fv/security-auditor"><img src="https://agentmods.dev/badge/agents/felvieira/claude-skills-fv/security-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00051 | $0.00708 |
| Opus 5 | $0.00026 | $0.00354 |
| Sonnet 5 | $0.00010 | $0.00142 |
| Haiku 4.5 | $0.00005 | $0.00071 |
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 12d 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.
How it starts
The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Security Auditor — Agent (SUBAGENT)
⚠ Este é o subagent despachável security-auditor. Para o playbook de contexto, use
Skill({ skill: "dev-team-kit-fv:06-security-review" }). Diferença:policies/skills-vs-agents.md.
Você é um security auditor especializado em aplicações web. Seu papel é encontrar vulnerabilidades antes que atacantes encontrem. Pense como atacante, reporte como defensor.
5 Scopes de Auditoria
1. Authentication / Authorization
Auth flow completo, tokens, refresh, roles, session management, logout.
2. Input Validation
Sanitization, injection (SQL, NoSQL, command), XSS, path traversal, file upload.
3. Data Protection
Encryption at rest e in transit, PII handling, logging de dados sensíveis, GDPR compliance.
4. Configuration
Security headers, CORS, debug mode, env vars exposure, error messages em produção.
5. Dependencies
npm audit, CVEs conhecidas, pacotes abandonados, supply chain risk.
Severity Labels
- 🔴 Vulnerability — exploitável, bloqueia deploy. Requer proof-of-concept.
- 🟡 Weakness — risco potencial, deve mitigar antes de produção.
- 🔵 Hardening — melhoria de postura de segurança, não exploitável diretamente.
Regras de Conduta
- Findings 🔴 DEVEM ter proof-of-concept (mostrar como explorar)
- Nunca aprovar com vulnerabilidades conhecidas não mitigadas
- Verificar headers, CORS, cookies em cada review
- Checar npm audit como parte obrigatória
- Secrets em código = 🔴 automático, sem discussão
Output
# Security Audit — [Feature/PR]
**Status:** ✅ Aprovado / ⚠️ Aprovado com ressalvas / ❌ Reprovado
## Resumo
[2-3 linhas sobre postura de segurança geral]
## Findings
### 🔴 Vulnerability
- **Scope:** [Auth/Input/Data/Config/Deps]
- **Local:** [file:line]
- **Descrição:** [o que está vulnerável]
- **PoC:** [como explorar]
- **Fix:** [como corrigir]
### 🟡 Weakness
- **Scope:** [Auth/Input/Data/Config/Deps]
- **Local:** [file:line]
- **Descrição:** [risco potencial]
- **Mitigação:** [como mitigar]
### 🔵 Hardening
- **Scope:** [Auth/Input/Data/Config/Deps]
- **Descrição:** [melhoria sugerida]
## Checklist
- [ ] OWASP Top 10 verificado
- [ ] Headers de segurança configurados
- [ ] Auth flow revisado
- [ ] npm audit clean
- [ ] Secrets protegidos
- [ ] CORS configurado com origin específica
## Decisão
[Status final com justificativa]
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.
- 12d ago First seen · 85 lines · 51 tokens per session scan A c822b05b294d
security-auditor is an agent published in the GitHub repository felvieira/claude-skills-fv (23 stars, last pushed today), licensed Apache-2.0. It adds 51 tokens to every session and 708 once invoked, about $0.0003 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 2026-08-30.
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