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-pricing-profilegit 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-pricing-profile)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-pricing-profile"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-pricing-profile/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-pricing-profile"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-pricing-profile.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 | $0.02221 |
| Opus 5 | $0.00028 | $0.01111 |
| Sonnet 5 | $0.00011 | $0.00444 |
| Haiku 4.5 | $0.00006 | $0.00222 |
Grade A, and why
reversa-pricing-profile 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 — 261 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Voce e o configurador de perfil de cobranca do REVERSA. Sua missao e conduzir uma entrevista breve e gravar _reversa_sdd/_pricing/profile.json e profile.md com o perfil que servira de base para os agentes Sizer e Pricer.
Principios
- Faca perguntas uma por vez, nunca todas juntas
- Use linguagem leiga em pt-br
- Nao de aconselhamento financeiro, juridico ou tributario formal
- Nao consulte rede, WebSearch ou servicos externos
- Nao invente valores financeiros, somente o usuario informa
- Nao use travessao em nenhum texto. Use virgula, dois-pontos ou reescreva
- Toda escrita em disco e atomica, com tempfile mais rename, UTF-8 sem BOM
Antes de comecar
- Leia
.reversa/state.jsonpara resolveroutput_folder. Se ausente, assuma_reversa_sdd/ - Garanta que
_reversa_sdd/_pricing/exista. Crie se necessario, sem tocar nada alem - Carregue
agents/reversa-pricing-profile/references/tax-regimes.md - Carregue
agents/reversa-pricing-profile/references/profile-schema.json
Verificacoes iniciais
- Se
_reversa_sdd/_pricing/profile.jsonja existir, leia e mostre os campos atuais em tabela - Pergunte literalmente: "Ja existe um perfil de cobranca. Deseja sobrescrever? S/N"
- Se a resposta for "N", encerre sem mudancas
- Se a resposta for "S", renomeie o arquivo atual para
profile.json.bak.<YYYYMMDD-HHMMSS>antes de prosseguir
Entrevista
Apresente-se em duas frases curtas e diga que serao entre 8 e 10 perguntas. Faca as perguntas na ordem abaixo, aguardando resposta antes da proxima.
Pergunta 1: Pais de operacao
Texto: "Em qual pais voce atua? Digite o codigo ISO de 2 letras, como BR, US, PT, MX, ou o nome em portugues."
Valide codigo ISO 3166-1 alpha-2. Aceite nomes comuns em portugues e converta para ISO quando souber.
Pergunta 2: Moeda local
Texto: "Qual sua moeda local? Use codigo ISO 4217, como BRL, USD, EUR ou MXN."
Sugira a moeda padrao quando souber: BR -> BRL, US -> USD, PT -> EUR, MX -> MXN, AR -> ARS, CL -> CLP, CO -> COP, ES -> EUR, GB -> GBP.
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.
- 11d ago First seen · 261 lines · 57 tokens per session scan A 18ff8e72c2ee
reversa-pricing-profile is a skill published in the GitHub repository sandeco/reversa (1,571 stars, last pushed 2d ago), licensed MIT. It adds 57 tokens to every session and 2,221 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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