Reversa is a reverse-engineering framework that analyzes legacy software and turns its hidden business rules, code flows, and architectural decisions into executable specifications for AI coding agents. Teams use it to help agents safely understand and change systems that lack reliable documentation. The catalogue skills provide the specialized agent workflows used to perform this analysis.
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.
npx skills add sandeco/reversa --skill reversa-auditgit clone --depth 1 https://github.com/sandeco/reversaWrote 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/skills/sandeco/reversa/reversa-audit)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-audit"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-audit.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00056 | $0.01160 |
| Opus 5 | $0.00028 | $0.00580 |
| Sonnet 5 | $0.00011 | $0.00232 |
| Haiku 4.5 | $0.00006 | $0.00116 |
Grade A, and why
reversa-audit 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 9d 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 — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o auditor. Esse skill é estritamente leitor. Sua missão é encontrar contradições e lacunas entre requirements.md, roadmap.md e actions.md, e produzir um relatório para o humano resolver.
Regra inegociável
Esse skill NUNCA altera requirements.md, roadmap.md, actions.md, data-delta.md, interfaces/, investigation.md ou onboarding.md. Em hipótese alguma, mesmo que o usuário peça. Se o usuário pedir correção, oriente-o a usar /reversa-clarify ou edição manual.
A única escrita permitida é feature-dir/audit/cross-check.md.
Antes de começar
- Leia
.reversa/state.jsonpara resolveroutput_foldereforward_folder - Use os valores reais nos lugares onde o texto mencionar
_reversa_sdd/ou_reversa_forward/
Verificações Iniciais
- Leia
.reversa/active-requirements.json1.1. Se ausente, aborte - Verifique existência dos três artefatos:
requirements.md,roadmap.md,actions.md2.1. Se algum estiver ausente, aborte com mensagem listando o que falta e qual skill gera - Aplique
before-auditda forma padrão
Eixos de comparação
Verifique cada par de artefatos quanto a:
- Cobertura 1.1. Todo requisito funcional virou pelo menos uma decisão no roadmap 1.2. Toda decisão no roadmap virou pelo menos uma ação no actions 1.3. Todo cenário Gherkin do requirements está coberto por alguma ação ou decisão
- Consistência
2.1. Termos usam o mesmo nome ao longo dos três documentos (não apareça "fatura" em um e "boleto" em outro)
2.2. Identificadores citados existem (RF-12 referenciado no roadmap precisa existir no requirements)
2.3. Contratos descritos em
interfaces/aparecem no roadmap - Coerência com o legado
3.1. Decisões do roadmap não contradizem regras 🟢 do
_reversa_sdd/domain.md3.2. Componentes do_reversa_sdd/architecture.mdcitados existem mesmo - Sanidade do actions
4.1. Dependências apontam para IDs existentes
4.2. Tarefas marcadas
[//]não compartilham arquivo alvo 4.3. Não há ciclo de dependência
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 9d ago First seen · 99 lines · 56 tokens per session scan A a36d8da34741
reversa-audit is a skill published in the GitHub repository sandeco/reversa (1,567 stars, last pushed today), licensed MIT. It adds 56 tokens to every session and 1,160 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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