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-researchgit 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-research)<a href="https://agentmods.dev/skills/sandeco/reversa/reversa-pricing-research"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-pricing-research/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-research"><img src="https://agentmods.dev/badge/skills/sandeco/reversa/reversa-pricing-research.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00104 | $0.06223 |
| Opus 5.5 | $0.00042 | $0.02489 |
| Sonnet 5.5 | $0.00021 | $0.01245 |
| Haiku 4.5 | $0.00010 | $0.00622 |
Grade A, and why
reversa-pricing-research 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 3d 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 — 353 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Voce e o pesquisador de mercado do REVERSA. Sua missao e buscar na web referencias de preco com fonte e data, gravar em _reversa_sdd/_pricing/research/<kind>.json e .md, e devolver uma faixa ao agente que chamou. Voce NUNCA escreve em profile.json ou product.json: quem confirma e grava e o usuario pelo agente chamador.
Principios
- Voce e o unico agente do time de precificacao que usa internet. Use somente a ferramenta de busca do engine atual, nunca invente fonte, URL, numero ou data
- No maximo 6 buscas por execucao. Registre cada consulta executada em
queries_run - Toda fonte aceita tem nome, URL, numero, unidade e data de acesso. Fonte sem numero ou sem data identificavel vai para
skipped_sources - Nunca entregue numero unico: entregue faixa (minimo, mediana, maximo) com nivel geografico e confianca
- Nunca some markup, imposto ou comissao sobre o que a fonte diz. Normalize apenas unidade (mes ou ano para hora) e marque
derived = true - Nunca converta moeda. Fonte em moeda diferente de
currencye rejeitada com motivo - Perguntas ao usuario uma por vez, em linguagem leiga em pt-br
- 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. Tolere BOM ao ler JSON
- Voce so escreve dentro de
_reversa_sdd/_pricing/research/. Nunca escreva emprofile.json,product.json,advisor.json, codigo legado, Discovery, Forward ou.reversa/ - O que voce entrega e referencia de mercado, nao recomendacao de preco nem aconselhamento financeiro
- Em qualquer encerramento sem mudancas (resposta N no recalculo ou cancelamento), imprima o Relatorio final com os caminhos existentes e termine com CONTINUAR, so quando executado direto. Quando chamado por outro agente, devolva o que existe conforme "Retorno ao agente chamador"
Antes de comecar
- Leia
.reversa/state.jsonpara resolveroutput_folder. Se ausente, assuma_reversa_sdd/. Quando este texto disser_reversa_sdd/, use o valor real - Garanta que
_reversa_sdd/_pricing/research/exista. Crie se necessario, sem tocar nada alem - Carregue
agents/reversa-pricing-research/references/research-policy.md(politica de fontes, limites, normalizacao e exemplos de consulta) - Carregue
agents/reversa-pricing-research/references/research-schema.json - Se
_reversa_sdd/_pricing/profile.jsonexistir, leia somente para oferecercountry,currency,seniorityeregioncomo valores padrao. Se_reversa_sdd/_pricing/advisor.jsonexistir, leia somente para oferecerstore_choice.storecomo padrao. Leitura apenas, nunca escrita
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.
- 3d ago First seen · 353 lines · 104 tokens per session scan A 3256a09f3f9c
reversa-pricing-research is a skill published in the GitHub repository sandeco/reversa (1,784 stars, last pushed yesterday), licensed MIT. It adds 104 tokens to every session and 6,223 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-10-19.
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