calcular_custo_efetivo_total

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

Low RISK CLASS

Category Read

Parameters 73 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-custo-efetivo-total.md

WHAT IT DOES

What calcular_custo_efetivo_total does on Contaí — Calculadoras Fiscais Brasileiras

AI agents call calcular_custo_efetivo_total 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
`iofCents`	integer	—	IOF cobrado no ato do empréstimo, em centavos. Default 0.
`prazoMeses`	integer	Yes	Número de parcelas mensais. Intervalo: [1, 360].
`seguroCents`	integer	—	Seguro prestamista cobrado no ato, em centavos. Default 0.
`taxaMensalPercent`	number	Yes	Taxa de juros mensal nominal em %. Ex: 2 = 2% a.m. Intervalo: (0, 50].
`tarifaAberturaCents`	integer	—	Tarifa de abertura de crédito (TAC) cobrada no ato, em centavos. Default 0.
`valorFinanciadoCents`	integer	Yes	Valor do empréstimo/financiamento em centavos. Ex: 1000000 = R$ 10.000,00
`outrosEncargosAdiantadosCents`	integer	—	Outros encargos cobrados antecipadamente, em centavos. Default 0.

Parameters from the server's own tool schema.

RISK

Why calcular_custo_efetivo_total is rated Low

This tool performs financial calculations on input parameters (loan/financing terms) and returns computed results without side effects. It does not execute arbitrary code, create/modify records, delete data, or move money. It is a computational tool that retrieves calculated values, fitting the Read category definition of 'retrieves or queries data; no side effects'.

From the tool's definition Tool description states it 'Calcula' (calculates) and 'Retorna' (returns) the CET value. The verb phrases indicate data retrieval and computation: 'solves the equation via Newton-Raphson' and 'returns CET monthly, CET annual and the difference vs advertised…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs calcular_custo_efetivo_total 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_custo_efetivo_total, this is the rule to start with:

calcular_custo_efetivo_total Allowed

calcular_custo_efetivo_total 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_custo_efetivo_total": {}
  }
}

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_custo_efetivo_total call is checked against it from then on.

FAQ

Questions about calcular_custo_efetivo_total

What does the calcular_custo_efetivo_total tool do? +

Calcula o CET (Custo Efetivo Total) de um empréstimo ou financiamento, conforme Resolução BCB 3.517/2007 e BACEN Circular 3.857/2017. O CET é a taxa real anualizada que inclui juros nominais + IOF + TAC + seguro + outros encargos. Usa regime Price (parcelas iguais) e resolve a equação via Newton-Raphson. Retorna CET mensal, CET anual e a diferença vs taxa nominal anunciada. 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_custo_efetivo_total accept? +

calcular_custo_efetivo_total accepts 7 parameters: iofCents, prazoMeses, seguroCents, taxaMensalPercent, tarifaAberturaCents, valorFinanciadoCents, outrosEncargosAdiantadosCents. Required: prazoMeses, taxaMensalPercent, valorFinanciadoCents. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on calcular_custo_efetivo_total? +

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

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

Can I rate-limit calcular_custo_efetivo_total? +

Yes. Add a rate_limit block to the calcular_custo_efetivo_total 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_custo_efetivo_total completely? +

Set action: deny in the PolicyLayer policy for calcular_custo_efetivo_total. 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_custo_efetivo_total? +

calcular_custo_efetivo_total 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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