tributario-brasil

tributario-brasil is a skill for Claude Code, Codex from AlissonSantos1/brasil-legal-skills. It costs 104 tokens per session (1,481 once invoked), scanned A, original, MIT.

An educational guide to Brazilian business taxes and registration, including MEI, CNPJ, CNAE, Simples Nacional, electronic invoices, and the 2026 tax reform. CNPJ is Brazil’s business tax registration, while CNAE identifies the type of business activity.

In plain words
What is it for?
Use it to compare business tax regimes, understand MEI requirements, choose or review a CNAE, handle CNPJ questions, and learn about CBS, IBS, PIS/COFINS, ICMS, ISS, and electronic invoices.
Why use it?
Choosing a tax regime or issuing invoices requires understanding several Brazilian tax names, registrations, and changing rules. This helps structure those questions, but it does not replace advice from a registered accountant.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 scripts/mei_calculator.py --atividade servicos.

Good fit Use it to compare business tax regimes, understand MEI requirements, choose or review a CNAE, handle CNPJ questions, and learn about CBS, IBS, PIS/COFINS, ICMS, ISS, and electronic invoices.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/AlissonSantos1/brasil-legal-skills
agentmods
npx agentmods add skills/alissonsantos1/brasil-legal-skills/tributario

Made for: Claude Code, Codex.

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 tributario-brasil

README.md
[![agentmods](https://agentmods.dev/badge/skills/alissonsantos1/brasil-legal-skills/tributario/github.svg)](https://agentmods.dev/skills/alissonsantos1/brasil-legal-skills/tributario)
Your own site
<a href="https://agentmods.dev/skills/alissonsantos1/brasil-legal-skills/tributario"><img src="https://agentmods.dev/badge/skills/alissonsantos1/brasil-legal-skills/tributario/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.

agentmods 80×15 button for tributario-brasil

Your own site · 80×15
<a href="https://agentmods.dev/skills/alissonsantos1/brasil-legal-skills/tributario"><img src="https://agentmods.dev/badge/skills/alissonsantos1/brasil-legal-skills/tributario.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 104 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,481 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00104 $0.01481
Opus 5 $0.00052 $0.00740
Sonnet 5 $0.00021 $0.00296
Haiku 4.5 $0.00010 $0.00148

Measured 12d ago against content hash a998dd695b5c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tributario-brasil 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 12d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/simples_nacional.py, scripts/split_payment_simulator.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

tributario/SKILL.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🏛️ Tributário Brasileiro — 2026

⚠️ Orientação educativa. Não substitui contador registrado no CRC.


Reforma Tributária 2026 — O que muda AGORA

CBS e IBS (substituem PIS/COFINS e ICMS/ISS gradualmente)

A partir de 1° de janeiro de 2026, todos os contribuintes devem emitir documentos fiscais eletrônicos com destaque individualizado de CBS e IBS por operação.

Documentos afetados: NF-e · NFC-e · CT-e · NFS-e · NFCom · NF3e · BP-e

2026 é ano de teste:

Quem emitir documentos fiscais conforme as normas vigentes está dispensado do recolhimento de CBS e IBS neste período de transição.

PIS/COFINS — Mudanças 2026

  • Produtos que tinham alíquota zero de PIS/COFINS passaram a ter tributação equivalente a 10% da alíquota padrão
  • PIS cumulativo: 0,65% → verificar se seu produto foi afetado
  • COFINS cumulativo: 3% → verificar se seu produto foi afetado

MEI e Autônomos — Nova Obrigação

A partir de julho de 2026, MEIs e autônomos contribuintes de CBS/IBS precisam registrar CNPJ para fins fiscais (não vira pessoa jurídica — é apenas cadastro).


Regimes Tributários

MEI — Microempreendedor Individual

Limite: R$ 81.000/ano | DAS mensal fixo

Atividade Total estimado 2026
Comércio ~R$ 76,90/mês
Serviços ~R$ 80,90/mês
Comércio + Serviços ~R$ 81,90/mês

Vedações: sem sócios · não pode ser sócio de outra empresa · máximo 1 funcionário

Como abrir MEI:

  1. Acesse gov.br/mei
  2. Clique em "Formalize-se"
  3. Informe CPF e dados pessoais
  4. Escolha a atividade pelo CNAE
  5. CNPJ emitido na hora — gratuito

Escolhendo o CNAE correto

O CNAE define o anexo do Simples e as obrigações do MEI. Exemplos comuns:

Atividade CNAE Regime MEI
Desenvolvimento de software 6201-5/01 Serviços
Designer gráfico 7410-2/02 Serviços
Vendas online 4791-1/00 Comércio
Consultoria 7020-4/00 Serviços
Barbeiro/Cabeleireiro 9602-5/01 Serviços

Read the full file on GitHub · 143 lines

Files

What ships with it

2 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.

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. 12d ago First seen · 143 lines · 104 tokens per session scan A a998dd695b5c

Subscribe to this mod's changes

tributario-brasil is a skill published in the GitHub repository AlissonSantos1/brasil-legal-skills (8 stars, last pushed 1mo ago), licensed MIT. It adds 104 tokens to every session and 1,481 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 2026-08-31.

Related

Other skills, from other repositories

estrutura-freelancer

Estruturação de negócio freelancer no Brasil: comparativo MEI vs PJ, abertura de empresa, precificação justa considerando impostos e tempo não faturável, contratos simples e gestão financeira básica.

ricneves-ai/flowgrammers-skills · 44 tokens

contingencia-report

Gera relatórios estruturados de contingência jurídica para uso em balanços, auditoria e compliance. Use quando o usuário precisar classificar processos por probabilidade de perda (provável/possível/remota) conforme CPC art. 95-96 e IAS 37 / CPC 25, calcular impacto financeiro no passivo contingente, ou preparar…

autodevx/legal-skills · 107 tokens

Classificação de Risco e Provisão (CPC 25)

Classifica o risco de cada processo judicial como Provável, Possível ou Remoto conforme CPC 25 e calcula o valor de provisão contábil recomendado, com memória de cálculo auditável para reporte ao financeiro e auditoria externa.

autodevx/legal-skills · 63 tokens

Revisão de Fatura Jurídica (Billing Guidelines)

Revisa faturas de escritórios externos contra as billing guidelines da organização, identificando linhas não conformes (horas excessivas, atividades não faturáveis, profissionais não aprovados) e calculando o valor a glosar com justificativa por linha.

autodevx/legal-skills · 64 tokens

banco-mcp

Skill abrangente pra trabalhar com dados financeiros via Banco MCP — analisar gastos, gerar extratos, fluxo de caixa, fatura de cartão, carteira de investimentos. Use sempre que o usuário perguntar sobre dinheiro, gastos, banco, cartão, investimentos, fatura, saldo, extrato, transações, ou variantes. Orquestra as 13…

douglac/banco-mcp · 96 tokens

bipa

Use Bipa CLI to make Pix payments, check balances, analyze transaction history, and decode BR codes for AI agents. MUST use this skill whenever the user mentions paying someone via Pix, checking their balance, reviewing transactions, scanning a Pix QR code, setting up Bipa CLI, or asks the agent to handle any…

bipa-app/bipa-cli · 139 tokens