business-rule

business-rule is a skill for Claude Code, Codex from snk-devcenter/addon-studio. It costs 200 tokens per session (3,642 once invoked), scanned A, original, MIT.

Uma orientação para criar e revisar regras automáticas do ciclo comercial do Sankhya, como confirmação e faturamento de pedidos e notas.

In plain words
What is it for?
Serve para implementar validações complexas, liberação de limite e regras transacionais com `@BusinessRule`, `Regra` e `ContextoRegra` em documentos comerciais.
Why use it?
Ajuda a escolher o ponto certo para cada regra: eventos comerciais, operações de cadastro ou outros eventos de documentos. Isso evita usar um mecanismo inadequado para a validação ou alteração necessária.

Skill for Claude CodeCodex

Part of the addon-studio plugin — 23 skills, 6 agents, 1 hook shipped together

Install

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.

agentmods
npx agentmods add skills/snk-devcenter/addon-studio/business-rule
Any agent
npx skills add snk-devcenter/addon-studio --skill business-rule
Clone the repo
git clone --depth 1 https://github.com/snk-devcenter/addon-studio

Made for: Claude Code, Codex.

Or install addon-studio, the plugin that ships this one along with the rest of its 23 skills, 6 agents, 1 hook.

Wrote 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.

agentmods badge for business-rule

README.md
[![agentmods](https://agentmods.dev/badge/skills/snk-devcenter/addon-studio/business-rule.svg)](https://agentmods.dev/skills/snk-devcenter/addon-studio/business-rule)
Your own site
<a href="https://agentmods.dev/skills/snk-devcenter/addon-studio/business-rule"><img src="https://agentmods.dev/badge/skills/snk-devcenter/addon-studio/business-rule.svg" alt="Measured on agentmods" height="20"></a>
Per session 200 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,642 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00200 $0.03642
Opus 5 $0.00100 $0.01821
Sonnet 5 $0.00040 $0.00728
Haiku 4.5 $0.00020 $0.00364

Measured yesterday against content hash 53cb8021ec0e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

business-rule 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 yesterday.

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.

plugins/addon-studio/skills/business-rule/SKILL.md · 325 lines

How it starts

The opening of the file, as written. The whole thing — 325 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Regra de Negocio (@BusinessRule) — Addon Studio 2.0

@BusinessRule implementa logica automatica disparada por eventos do ciclo de vida comercial — principalmente confirmacao e faturamento de documentos (Pedidos, Notas de Venda). Disponivel a partir do Addon Studio 2.0.

Referencias complementares:

  • dependency-injection — Injecao de dependencia (Guice)

1. Quando usar — @BusinessRule vs @Callback vs @Listener

Hook Escopo Quando usar
@BusinessRule Notas de Saida e Mov. Interna (Vendas, Remessas, etc.) Logica que interage com barramento de regras (ContextoRegra): liberacoes de limite, validacoes complexas na confirmacao/faturamento.
@Callback Todos documentos comerciais, incluindo Notas de Entrada Eventos de negocio onde @BusinessRule nao atua (ex: notas de compra) ou quando barramento nao e necessario.
@Listener Operacoes CRUD (insert/update/delete) em qualquer entidade Validacoes e modificacoes de campo disparadas ao salvar/excluir. Preferir para CRUD simples.

Regra rapida:

  • Liberacao de limite em nota de venda? @BusinessRule.
  • Validar nota de compra na confirmacao? @Callback.
  • Logica ao salvar/excluir qualquer registro? @Listener.

2. Anatomia de um @BusinessRule

import br.com.sankhya.jape.vo.DynamicVO;
import br.com.sankhya.modelcore.comercial.Regra;
import br.com.sankhya.modelcore.comercial.ContextoRegra;
import br.com.sankhya.studio.annotations.hooks.BusinessRule;
import com.google.inject.Inject;

@BusinessRule(description = "Valida desconto na confirmacao")
public class ValidacaoDescontoRegra implements Regra {

    private final DescontoService descontoService;

    @Inject
    public ValidacaoDescontoRegra(DescontoService descontoService) {
        this.descontoService = descontoService;
    }

    @Override
    public void beforeUpdate(ContextoRegra ctx) throws Exception {
        DynamicVO notaVO = (DynamicVO) ctx.getPrePersistEntityState().getNewVO();
        // logica de negocio delegada ao Service
        descontoService.validar(notaVO, ctx.getBarramentoRegra());
    }

    // A interface exige os 6 metodos (sem default) — deixe vazios os que nao usar
    @Override public void beforeInsert(ContextoRegra ctx) throws Exception {}
    @Override public void afterInsert(ContextoRegra ctx) throws Exception {}
    @Override public void afterUpdate(ContextoRegra ctx) throws Exception {}
    @Override public void beforeDelete(ContextoRegra ctx) throws Exception {}
    @Override public void afterDelete(ContextoRegra ctx) throws Exception {}
}

Read the full file on GitHub · 325 lines

Changes

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.

  1. yesterday Changed · -1 lines 53cb8021ec0e
  2. 5d ago First seen · 326 lines · 200 tokens per session scan A 2a0a1dc1e201

Subscribe to this mod's changes

business-rule is a skill published in the GitHub repository snk-devcenter/addon-studio (5 stars, last pushed yesterday), licensed MIT. It adds 200 tokens to every session and 3,642 once invoked, about $0.0010 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 2026-08-31.

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