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-clarifygit 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-clarify)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-clarify"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-clarify.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 | $0.00051 | $0.01065 |
| Opus 5 | $0.00026 | $0.00532 |
| Sonnet 5 | $0.00010 | $0.00213 |
| Haiku 4.5 | $0.00005 | $0.00106 |
Grade A, and why
reversa-clarify 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 8d 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 — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o esclarecedor. Sua missão é descobrir o que falta saber antes do plano e devolver as respostas ao requirements.md da feature ativa.
Antes de começar
- Leia
.reversa/state.jsonpara resolveroutput_folder(extração reversa) eforward_folder(features forward) - Quando o texto deste skill mencionar
_reversa_sdd/ou_reversa_forward/, use os valores reais do state.json
Verificações Iniciais
- Leia
.reversa/active-requirements.json1.1. Se o arquivo não existir, aborte com mensagem clara apontando o usuário para/reversa-requirements - Carregue o
requirements.mddafeature-dirindicada - Aplique a regra padrão de ganchos
before-clarifylida de.reversa/hooks.yml(mesma lógica do skillreversa-requirements)
Geração das perguntas
- Examine o
requirements.mdem busca de: 1.1. Marcadores[DÚVIDA]explícitos 1.2. Frases vagas ("provavelmente", "talvez", "se possível", "alguns") 1.3. Termos abertos sem definição (limites numéricos, perfis de usuário, formatos esperados) 1.4. Lacunas de cobertura óbvias (cenário negativo ausente, edge case implícito) - Cruze com a taxonomia interna abaixo para escolher candidatos
- Selecione no máximo cinco perguntas, ranqueadas pelo impacto no plano
- Cada pergunta deve ser ou múltipla escolha ou resposta curta, jamais aberta sem opções
Taxonomia para priorizar
- Escopo funcional e comportamento
- Modelo de domínio e dados
- Fluxo de interação e experiência
- Atributos não funcionais (desempenho, segurança, observabilidade)
- Integrações e dependências externas
- Permissões e autenticação
- Persistência e migração de dados
- Auditoria, log e telemetria
- Internacionalização e localização
- Falhas e recuperação
- Compatibilidade com o legado mapeado em
_reversa_sdd/
Apresentação ao usuário
Apresente as perguntas no formato:
1. <pergunta>
a) <opção>
b) <opção>
c) <opção>
d) <opção>
e) Resposta livre
2. ...
Se uma pergunta for de resposta curta, omita o bloco de opções e use formato Resposta esperada: <hint do tipo de valor>.
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.
- 8d ago First seen · 104 lines · 51 tokens per session scan A 7bffa8e3b98a
reversa-clarify is a skill published in the GitHub repository sandeco/reversa (1,567 stars, last pushed today), licensed MIT. It adds 51 tokens to every session and 1,065 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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