calcular_simples_nacional

SERVERContaí — Calculadoras Fiscais Brasileiras SOURCE@contai-evoluke/mcp-server

Low RISK CLASS

Category Read

Parameters 83 required

Recommended Allowedsee the rule below

Registry record Grade B, identity unverified Pull the record →

This record as markdown: /tools/io-github-lfhillesheim-contai-mcp-server/calcular-simples-nacional.md

WHAT IT DOES

What calcular_simples_nacional does on Contaí — Calculadoras Fiscais Brasileiras

AI agents call calcular_simples_nacional to retrieve information from Contaí — Calculadoras Fiscais Brasileiras without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`anexo`	string	Yes	Anexo do Simples: I=comércio, II=indústria, III=serviços (consultoria, salão, etc.), IV=construção/limpeza/vigilância, V=serviços intelectuais (advocacia, medic
`rpaCents`	integer	Yes	Receita do Período de Apuração (mês atual) em centavos
`rbt12Cents`	integer	Yes	Receita Bruta Total dos últimos 12 meses (RBT12) em centavos
`aplicarFatorR`	boolean	—	Se true, anexo V com folha ≥ 28% do RBT12 vira anexo III (alíquota menor). Vale para serviços intelectuais.
`folhaPagamento`	array	—	Benefícios CLT últimos 12 meses categorizados (plano_saude, vale_alimentacao, vale_refeicao, vale_transporte, auxilio_creche, previdencia_privada_empresarial, g
`proLaboreCents`	integer	—	Pro-labore total dos sócios últimos 12 meses (centavos). Detalha o numerador do Fator R.
`folhaSalariosClt`	integer	—	Salários CLT brutos últimos 12 meses (centavos). Detalha o numerador do Fator R.
`folhaSalariosUltimos12MesesCents`	integer	—	Folha agregada (pro-labore + salários + benefícios) últimos 12m. Necessário se aplicarFatorR=true OU forneça os campos detalhados (proLaboreCents + folhaSalario

Parameters from the server's own tool schema.

RISK

Why calcular_simples_nacional is rated Low

This is a calculation tool that takes financial parameters and applies Brazilian tax formulas (LC 123/2006) to compute and return tax-related values. It does not create, modify, delete, or execute any data or operations—it retrieves or derives read-only computational results.

From the tool's definition Tool description states it 'Calcula' (calculates) and 'Retorna' (returns) tax rates and DAS amounts using legal formulas.

Risk signalsHigh parameter count (11 properties)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs calcular_simples_nacional safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Contaí — Calculadoras Fiscais Brasileiras, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calcular_simples_nacional, this is the rule to start with:

calcular_simples_nacional Allowed

calcular_simples_nacional is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "calcular_simples_nacional": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Contaí — Calculadoras Fiscais Brasileiras, apply this rule, and every calcular_simples_nacional call is checked against it from then on.

FAQ

Questions about calcular_simples_nacional

What does the calcular_simples_nacional tool do? +

Calcula DAS Simples Nacional usando a fórmula da LC 123/2006: alíquota efetiva = ((RBT12 × aliquota_nominal) − parcela_a_deduzir) / RBT12. DAS = RPA × alíquota_efetiva. Suporta os 5 anexos + Fator R (anexo V → III quando folha ≥ 28% RBT12). Retorna alíquota efetiva, faixa, DAS, e detalhes do Fator R quando aplicado. Fonte: LC 123/2006 + LC 155/2016. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.

What parameters does calcular_simples_nacional accept? +

calcular_simples_nacional accepts 8 parameters: anexo, rpaCents, rbt12Cents, aplicarFatorR, folhaPagamento, proLaboreCents, folhaSalariosClt, folhaSalariosUltimos12MesesCents. Required: anexo, rpaCents, rbt12Cents. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on calcular_simples_nacional? +

Register the Contaí — Calculadoras Fiscais Brasileiras MCP server in PolicyLayer and add a rule for calcular_simples_nacional: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Contaí — Calculadoras Fiscais Brasileiras. Nothing to install.

What risk level is calcular_simples_nacional? +

calcular_simples_nacional is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit calcular_simples_nacional? +

Yes. Add a rate_limit block to the calcular_simples_nacional rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block calcular_simples_nacional completely? +

Set action: deny in the PolicyLayer policy for calcular_simples_nacional. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides calcular_simples_nacional? +

calcular_simples_nacional is provided by the Contaí — Calculadoras Fiscais Brasileiras MCP server (@contai-evoluke/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Contaí — Calculadoras Fiscais Brasileiras, and thousands of servers like it.

This server

All 139 Contaí — Calculadoras Fiscais Brasileiras tools →

Across the catalogue

The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →