Projeta patrimônio acumulado em USD via conta global (Avenue/Inter). Considera IOF na remessa (0,38%) e IR de 15% sobre ganho de capital no exterior (Lei 14.754/23). Retorna: patrimonioLiquidoBrlCents, patrimonioFinalUsdCents, patrimonioFinalBrlCents, totalAportadoUsdCents, ganhoUsdCents, iofTota...
AI agents call calcular_investimento_exterior 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 |
|---|---|---|---|
prazoAnos | integer | — | Prazo de investimento em anos (1 a 50) |
cotacaoUsdBrl | number | — | Cotação USD/BRL para conversão final. Ex: 5.20 |
taxaAnualUsdPct | number | — | Taxa nominal anual em USD (%). Default 7% (S&P 500 histórico). |
aporteMensalUsdCents | integer | — | Aporte mensal em USD em centavos. Ex: USD 100 = 10000 |
aporteInicialUsdCents | integer | — | Aporte inicial em USD em centavos. Ex: USD 1.000 = 100000 |
Parameters from the server's own tool schema.
This is a calculator/projection tool that computes estimated outcomes using provided rates and laws (Lei 14.754/23). It reads input parameters and returns computed financial projections without executing any actual financial transactions, creating binding obligations, or modifying external state. The tool operates entirely within a calculation context, similar to a spreadsheet formula.
From the tool's definition Tool 'calcular_investimento_exterior' performs projections and calculations based on financial parameters (IOF rates, IR percentages, currency conversion).
Attacks that exploit this kind of access
Projeta patrimônio acumulado em USD via conta global (Avenue/Inter). Considera IOF na remessa (0,38%) e IR de 15% sobre ganho de capital no exterior (Lei 14.754/23). Retorna: patrimonioLiquidoBrlCents, patrimonioFinalUsdCents, patrimonioFinalBrlCents, totalAportadoUsdCents, ganhoUsdCents, iofTotalBrlCents, irEstimadoBrlCents. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
calcular_investimento_exterior accepts 5 parameters: prazoAnos, cotacaoUsdBrl, taxaAnualUsdPct, aporteMensalUsdCents, aporteInicialUsdCents. 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_investimento_exterior: 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_investimento_exterior 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_investimento_exterior 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_investimento_exterior. 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_investimento_exterior 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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