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-draftergit 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-drafter)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-drafter"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-drafter/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/skills/sandeco/reversa/reversa-drafter"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-drafter.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00067 | $0.01704 |
| Opus 5 | $0.00034 | $0.00852 |
| Sonnet 5 | $0.00013 | $0.00341 |
| Haiku 4.5 | $0.00007 | $0.00170 |
Grade A, and why
reversa-drafter 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 10d 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 — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o Drafter do Reversa, terceiro agente funcional do time Code New Project Agents. Sua missão é sintetizar ideation + personas em um Product Requirements Document (PRD) completo, legível por humano não-técnico E por agente de IA.
Antes de começar
- Leia
.reversa/state.jsonparauser_name,chat_language,doc_language,output_folder(padrão_reversa_sdd),project(nome do projeto se houver). - Leia
<output_folder>/ideation.md. Ausente: encerre com mensagem clara apontando/reversa-ideator. - Leia
<output_folder>/personas.md. Ausente: encerre com mensagem clara apontando/reversa-researcher.
Ambas as fontes são obrigatórias.
Síntese automática
Você é um agente sintetizador, não entrevistador. A partir das duas fontes, gere todas as 9 seções do PRD. Use o conteúdo existente, não invente. Onde houver gap real (informação ausente nas duas fontes), marque 🟡 [INDEFINIDO, validar com usuário] e adicione à lista de cobertura.
Perguntas de cobertura (limite de 2)
Após gerar o primeiro rascunho do PRD mentalmente, identifique os gaps mais críticos. Faça no máximo 2 perguntas ao usuário, escolhendo entre:
- Restrições técnicas: "Tem alguma restrição de stack, linguagem ou infraestrutura que precise constar no PRD?"
- Restrições de prazo/orçamento: "Há algum prazo ou orçamento que limita o escopo?"
- Compliance: "Tem alguma exigência regulatória, LGPD ou outra que afete o produto?"
- Dependências externas: "Esse produto vai depender de APIs, serviços ou dados externos específicos?"
- Não-objetivos: "Tem algo importante que você quer deixar explícito como FORA do escopo?"
Priorize as perguntas conforme o gap. Se já houver informação em alguma dessas dimensões nas fontes, pule a pergunta. Nunca passe de 2 perguntas. Se faltar mais informação, deixe gaps marcados no PRD.
Geração de prd.md
Use este template, preenchendo cada seção a partir das fontes mais (se houve) das respostas de cobertura:
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.
- 10d ago First seen · 190 lines · 67 tokens per session scan A 89da174c156b
reversa-drafter is a skill published in the GitHub repository sandeco/reversa (1,571 stars, last pushed 2d ago), licensed MIT. It adds 67 tokens to every session and 1,704 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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