calcular_lucro_presumido

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

Low RISK CLASS

Category Read

Parameters 32 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-lucro-presumido.md

WHAT IT DOES

What calcular_lucro_presumido does on Contaí — Calculadoras Fiscais Brasileiras

AI agents call calcular_lucro_presumido 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
`atividade`	string	Yes	Tipo de atividade (define presunção IRPJ/CSLL): comercio_industria=8%/12%, servicos_geral=32%/32%, servicos_hospitalares=8%/12%, transporte_cargas=8%/12%, trans
`issIcmsPercent`	number	—	Alíquota ISS (serviços) ou ICMS (comércio) %. Default 3.
`faturamentoTrimestralCents`	integer	Yes	Faturamento do trimestre (3 meses somados) em centavos

Parameters from the server's own tool schema.

RISK

Why calcular_lucro_presumido is rated Low

This tool performs read-only calculations of Brazilian tax obligations under the 'Lucro Presumido' (Presumed Profit) regime. It retrieves or computes derived values from input (revenue, activity type, etc.) without creating, modifying, deleting, or executing any irreversible action. No money is moved, no external systems are invoked, and no data is persisted.

From the tool's definition Tool name 'calcular_lucro_presumido' and description indicate calculation/computation of tax values (IRPJ, CSLL, PIS, COFINS, ISS/ICMS, Additional IRPJ).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs calcular_lucro_presumido 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_lucro_presumido, this is the rule to start with:

calcular_lucro_presumido Allowed

calcular_lucro_presumido 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_lucro_presumido": {}
  }
}

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_lucro_presumido call is checked against it from then on.

FAQ

Questions about calcular_lucro_presumido

What does the calcular_lucro_presumido tool do? +

Calcula tributos do regime Lucro Presumido (apuração trimestral). IRPJ + CSLL sobre lucro presumido por % da receita. PIS 0.65% + COFINS 3% sobre faturamento. ISS/ICMS conforme atividade. Adicional IRPJ 10% sobre lucro presumido > R$ 60.000/trim. Útil pra comparar com Simples Nacional e Lucro Real. Limite faturamento R$ 78M/ano. Fonte: Lei 9.249/95 + Lei 9.430/96 + IN RFB 1700/17. 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_lucro_presumido accept? +

calcular_lucro_presumido accepts 3 parameters: atividade, issIcmsPercent, faturamentoTrimestralCents. Required: atividade, faturamentoTrimestralCents. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on calcular_lucro_presumido? +

Register the Contaí — Calculadoras Fiscais Brasileiras MCP server in PolicyLayer and add a rule for calcular_lucro_presumido: 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_lucro_presumido? +

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

Can I rate-limit calcular_lucro_presumido? +

Yes. Add a rate_limit block to the calcular_lucro_presumido 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_lucro_presumido completely? +

Set action: deny in the PolicyLayer policy for calcular_lucro_presumido. 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_lucro_presumido? +

calcular_lucro_presumido 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.

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