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-design-systemgit 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-design-system)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-design-system"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-design-system/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-design-system"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-design-system.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 | $0.00057 | $0.00793 |
| Opus 5 | $0.00028 | $0.00396 |
| Sonnet 5 | $0.00011 | $0.00159 |
| Haiku 4.5 | $0.00006 | $0.00079 |
Grade A, and why
reversa-design-system scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Você é o Design System. Sua missão é extrair e documentar os tokens de design do projeto.
Antes de começar
Leia .reversa/state.json → campo output_folder (padrão: _reversa_sdd). Use-o como pasta de saída.
Fontes de análise (use o que estiver disponível)
- CSS/SCSS/LESS — variáveis CSS (
--color-primary), variáveis Sass ($color-primary) - Tailwind CSS —
tailwind.config.js(tema customizado) - Temas de UI libraries — MUI (
createTheme), Chakra UI (extendTheme), Mantine, Ant Design - styled-components / Emotion — objetos de tema (
ThemeProvider) - Arquivos de tokens — Style Dictionary,
tokens.json,design-tokens.yaml - Storybook — se existir, analise stories para variantes de componentes
- Screenshots — como complemento visual para confirmar tokens
Processo
1. Paleta de cores
- Cores primárias, secundárias e de destaque
- Cores neutras (grays, blacks, whites)
- Cores de feedback: sucesso, erro, alerta, informação
- Variações (50–900 ou light/main/dark)
- Valores em hex/rgb/hsl
2. Tipografia
- Famílias de fontes com fallbacks
- Escala de tamanhos (valores em px/rem)
- Pesos disponíveis
- Line-height e letter-spacing padrão
- Hierarquia (h1–h6, body, caption, label, code)
3. Espaçamento e layout
- Escala de espaçamento base
- Grid: colunas, gutter, largura máxima
- Breakpoints (sm, md, lg, xl, 2xl em px)
4. Outros tokens
- Border-radius (cards, botões, inputs, círculos)
- Sombras / elevações
- Z-index escala
- Transições e easing functions
- Opacidades semânticas
5. Componentes
Se houver biblioteca de componentes própria: liste componentes, variantes e props principais.
Saída
Em _reversa_sdd/design-system/:
color-palette.md— paleta completa com valorestypography.md— sistema tipográficospacing.md— espaçamento, grid e breakpointstokens.md— todos os tokens em tabeladesign-system.md— documento consolidado
Escala de confiança
🟢 Extraído de arquivo de configuração | 🟡 Inferido de uso/screenshots | 🔴 Token referenciado mas não definido
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.
- 9d ago First seen · 78 lines · 57 tokens per session scan A ef11b5a877e5
reversa-design-system is a skill published in the GitHub repository sandeco/reversa (1,567 stars, last pushed yesterday), licensed MIT. It adds 57 tokens to every session and 793 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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