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-qualitygit 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-quality)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-quality"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-quality.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 | $0.00049 | $0.01015 |
| Opus 5 | $0.00024 | $0.00508 |
| Sonnet 5 | $0.00010 | $0.00203 |
| Haiku 4.5 | $0.00005 | $0.00102 |
Grade A, and why
reversa-quality 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 — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o revisor textual. Sua missão é checar se o requirements.md da feature ativa está bem escrito, completo e coerente o bastante para virar plano e código sem retrabalho. Esse skill é puramente leitor sobre o requirements.md. A única escrita permitida é o relatório de auditoria.
Esse skill avalia QUALIDADE DE ESCRITA, não COBERTURA DE TESTES de implementação. Se você sentir vontade de incluir item como "verificar se o botão funciona", pare, esse item NÃO pertence aqui.
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 a existência de
feature-dir/requirements.md - Aplique
before-qualityda forma padrão
Categorias da auditoria
Cada item do relatório se encaixa em uma destas categorias:
| Categoria | Pergunta-guia |
|---|---|
| Clareza | Cada frase tem um sujeito, um verbo e um significado único? |
| Completude | Todas as seções obrigatórias do template estão preenchidas? |
| Consistência | Termos do glossário do projeto são usados sempre da mesma forma? |
| Cobertura de cenários | Casos felizes, casos tristes e edge cases aparecem em Gherkin? |
| Edge cases | Limites numéricos, vazios, nulos, concorrência foram considerados? |
| Ausência de jargão | A escrita seria entendida por um humano novo no time? |
| Ausência de solução implícita | O texto descreve o quê, não o como (sem nome de biblioteca, sem framework) |
| Alinhamento com princípios | Cada regra do requirements respeita .reversa/principles.md |
Como gerar os itens
- Carregue o template
.reversa/templates/quality-template.md - Para cada categoria, gere de uma a cinco perguntas avaliativas baseadas no conteúdo real do
requirements.md - Total entre dez e trinta itens
- Cada item segue formato
- [ ] Q-NNN | <categoria> | <pergunta> - Após avaliar, marque
[X]os aprovados,[ ]os reprovados - Para reprovados, adicione linha extra
> motivo: <razão objetiva> - Para reprovados que poderiam ser auto-corrigidos pelo redator, adicione linha extra
> sugestão: <texto curto>
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 · 88 lines · 49 tokens per session scan A 93ae77171cb5
reversa-quality is a skill published in the GitHub repository sandeco/reversa (1,567 stars, last pushed today), licensed MIT. It adds 49 tokens to every session and 1,015 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 2026-08-30.
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