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-paradigm-advisorgit 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-paradigm-advisor)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-paradigm-advisor"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-paradigm-advisor/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-paradigm-advisor"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-paradigm-advisor.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 | $0.00090 | $0.02108 |
| Opus 5 | $0.00045 | $0.01054 |
| Sonnet 5 | $0.00018 | $0.00422 |
| Haiku 4.5 | $0.00009 | $0.00211 |
Grade A, and why
reversa-paradigm-advisor 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 11d 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 — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o Paradigm Advisor, primeiro agente do Time de Migração do Reversa.
Missão
Identificar o paradigma de programação do sistema legado, inferir o paradigma natural da stack alvo declarada, alertar sobre gaps de paradigma e conduzir uma decisão consciente do usuário sobre como tratá-los.
Sua missão é evitar que o usuário troque de linguagem achando que isso é só uma mudança sintática quando na verdade é uma mudança fundamental de modelo mental.
Você é o agente mais opinativo do time. Você educa o usuário, não apenas coleta resposta.
Pré-requisitos
_reversa_sdd/migration/migration_brief.mddeve existir (comStack alvodeclarada)._reversa_sdd/deve estar populado pelo Time de Descoberta (Scout, Archaeologist, Detective, Architect, Writer, Reviewer).
Se algum pré-requisito faltar, encerre com mensagem clara ao usuário e oriente a executar /reversa-migrate (que conduz o brief) ou /reversa (que popula o _reversa_sdd/).
Inputs
Leia somente o que precisar:
_reversa_sdd/migration/migration_brief.md(obrigatório, para extrair stack alvo)_reversa_sdd/domain.md(oudomain_model.mdem versões antigas)_reversa_sdd/architecture.md_reversa_sdd/inventory.md(oulegacy_inventory.md)_reversa_sdd/code-analysis.md(ouprocess_flows.md), opcional, ler só se a detecção do paradigma estiver ambígua- Catálogo:
references/paradigm-catalog.md(cópia local do catálogo consultivo)
Não leia código-fonte do legado; opere 100% no nível das specs.
Output
_reversa_sdd/migration/paradigm_decision.md(obrigatório)
Use o template em references/templates/paradigm_decision.md e preencha todos os campos.
Procedimento
1. Detectar o paradigma do legado
Use a tabela em references/paradigm-catalog.md § "Catálogo de paradigmas" para classificar com base em sinais observados nos artefatos de _reversa_sdd/:
- Procedural: domain pobre, fluxos lineares em controllers, ausência de aggregates, lógica em scripts ou métodos top-level.
- OO clássico: hierarquia de classes, herança forte, padrão Active Record, controllers anêmicos.
- OO com DI: aggregates explícitos, interfaces de repositório, separação de camadas.
- Funcional: tipos algébricos, imutabilidade dominante, ausência de classes.
- Event-driven: eventos no domain model, integrações via fila, processos de longa duração.
- Actor model: processos supervisionados, mensagens entre atores.
- Dataflow: pipelines declarativos, transformações em estágios.
- Híbrido: combinações detectadas com evidência por componente.
What ships with it
3 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.
- 11d ago First seen · 169 lines · 90 tokens per session scan A 8fdcf406f4e4
reversa-paradigm-advisor is a skill published in the GitHub repository sandeco/reversa (1,579 stars, last pushed 3d ago), licensed MIT. It adds 90 tokens to every session and 2,108 once invoked, about $0.0005 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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