Calcula o Imposto de Renda sobre ganho de capital de pessoa física (DARF código 4600). Aplica tabela progressiva 4 faixas da Lei 13.259/2016: 15% (até R$ 5M), 17,5% (5M–10M), 20% (10M–30M), 22,5% (>30M). Calcula multa por atraso (0,33%/dia, máx 20%) e juros SELIC quando pago após o vencimento. Ve...
AI agents call calcular_darf_calculo to retrieve information from Contaí — Calculadoras Fiscais Brasileiras without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
isento | boolean | — | true se houver isenção total: reinvestimento em imóvel residencial em 180 dias (art. 39 Lei 11.196/2005) ou único imóvel ≤ R$ 440.000 (sem venda nos últimos 5 a |
dataVenda | string | Yes | Data da alienação/venda no formato YYYY-MM-DD. Ex: "2026-03-15" |
currentDate | string | — | Data de referência YYYY-MM-DD para tabelas fiscais (INSS/IRRF/IOF/etc.). Default: hoje. |
ganhoCapitalCents | integer | Yes | Ganho de capital bruto em centavos (preço de venda − custo de aquisição). Ex: R$ 500.000 → 50000000 |
selicMensalPercent | number | — | Taxa Selic mensal para calcular juros de atraso (%). Default 1.0% ≈ Selic ~12% a.a. |
Parameters from the server's own tool schema.
This tool reads tax laws and input parameters to perform mathematical computations and return tax liability estimates. It does not execute code, create/modify records, delete data, move money, or trigger external systems. The output is informational guidance on tax obligations, not an action that commits financial obligations or modifies state.
From the tool's definition The tool 'calcular_darf_calculo' performs calculations of capital gains income tax (DARF) based on input values. The description emphasizes calculation ('Calcula'), application of tax tables, and computation of penalties and interest.
Attacks that exploit this kind of access
Calcula o Imposto de Renda sobre ganho de capital de pessoa física (DARF código 4600). Aplica tabela progressiva 4 faixas da Lei 13.259/2016: 15% (até R$ 5M), 17,5% (5M–10M), 20% (10M–30M), 22,5% (>30M). Calcula multa por atraso (0,33%/dia, máx 20%) e juros SELIC quando pago após o vencimento. Vencimento: último dia do mês seguinte à alienação. Suporta isenção total (reinvestimento em imóvel residencial ou imóvel único ≤ R$ 440k). Fonte: art. 21 Lei 8.981/1995 + Lei 13.259/2016 + art. 61 Lei 9.430/1996. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
calcular_darf_calculo accepts 5 parameters: isento, dataVenda, currentDate, ganhoCapitalCents, selicMensalPercent. Required: dataVenda, ganhoCapitalCents. The full parameter table on this page comes from the server's own tool schema.
Register the Contaí — Calculadoras Fiscais Brasileiras MCP server in PolicyLayer and add a rule for calcular_darf_calculo: 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.
calcular_darf_calculo is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the calcular_darf_calculo 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.
Set action: deny in the PolicyLayer policy for calcular_darf_calculo. 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.
calcular_darf_calculo 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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