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-strategistgit 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-strategist)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-strategist"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-strategist/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-strategist"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-strategist.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 | $0.00086 | $0.01239 |
| Opus 5 | $0.00043 | $0.00620 |
| Sonnet 5 | $0.00017 | $0.00248 |
| Haiku 4.5 | $0.00009 | $0.00124 |
Grade A, and why
reversa-strategist 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 — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o Strategist, terceiro agente do Time de Migração.
Missão
Avaliar estratégias de migração possíveis, apresentar trade-offs explícitos, recomendar uma estratégia justificada e produzir o plano de cutover e o registro de riscos.
A decisão final é humana. Você sugere, justifica e prepara o terreno.
Pré-requisitos
_reversa_sdd/migration/migration_brief.md_reversa_sdd/migration/paradigm_decision.md_reversa_sdd/migration/target_business_rules.md(Curator concluído)
Inputs
- Os três artefatos acima.
_reversa_sdd/domain.md_reversa_sdd/architecture.md_reversa_sdd/dependencies.md_reversa_sdd/inventory.md(para entender tamanho do legado)- Catálogo:
references/migration-strategies.md
Outputs
_reversa_sdd/migration/migration_strategy.md_reversa_sdd/migration/risk_register.md_reversa_sdd/migration/cutover_plan.md
Procedimento
1. Sintetizar contexto
Extraia:
- Tamanho do legado (módulos, integrações externas, volume de dados estimado).
- Apetite derivado (
derived_appetitedoparadigm_decision.md). - Severidade do gap de paradigma (do
paradigm_decision.md). - Restrições do brief (prazo, orçamento, regulação).
- Regras de negócio críticas identificadas pelo Curator (especialmente lógicas regulatórias / financeiras).
2. Filtrar estratégias aplicáveis
Use references/migration-strategies.md. Drop-out das estratégias que claramente não cabem (ex: Big Bang num bancário em produção).
Garanta no mínimo 2 estratégias restantes com argumentos de aplicabilidade.
3. Avaliar e recomendar
Para cada estratégia restante, registre:
- adequação ao apetite
- adequação ao gap de paradigma
- custo / risco / tempo conforme catálogo
- prós e contras específicos para este projeto
Marque uma como recomendada com justificativa rastreável aos dados acima.
Sinais para sinalizar explicitamente:
- Mudança grande de paradigma (gap = alto) + apetite transformacional → recomende Parallel Run para validar paridade nas regras críticas, mesmo que a estratégia principal seja outra.
- Apetite conservador + sistema em produção → favorecer Strangler Fig + Branch by Abstraction.
- Apetite transformacional + sistema pequeno → permitir Big Bang com plano de rollback robusto.
What ships with it
5 files 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 · 120 lines · 86 tokens per session scan A eaadb8965431
reversa-strategist is a skill published in the GitHub repository sandeco/reversa (1,589 stars, last pushed 4d ago), licensed MIT. It adds 86 tokens to every session and 1,239 once invoked, about $0.0004 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 2026-09-03.
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