Complete vehicle purchase simulator. Calculates monthly installment (CDC financing or consortium), annual IPVA tax by Brazilian state (2026 rates), estimated insurance range (3%-7%), projected 5-year depreciation, and total cost of ownership over 5 years. Also provides side-by-side comparison of ...
AI agents call calcular_planejamento_compra_veiculo 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 |
|---|---|---|---|
estadoUf | string | Yes | Brazilian state where the vehicle will be registered. Determines the IPVA (vehicle tax) rate. |
modalidade | string | Yes | "cdc" = Direct Consumer Credit (bank financing with interest), "consorcio" = consortium (no interest, administration fee only) |
prazoMeses | integer | Yes | Financing term in months. Ex: 48 = 4 years |
custosTransacao | array | — | One-shot acquisition transaction costs grouped by category. Each item: { categoria, valorCents, descricao? }. Categories: dpvat, licenciamento, emplacamento, ta |
percentualEntrada | number | Yes | Down payment percentage (%). Ex: 30 = 30% |
taxaJurosAnualBps | integer | Yes | Annual interest rate in basis points. Ex: 1850 = 18.5% per year (typical CDC in 2026) |
valorVeiculoCents | integer | Yes | Vehicle value in cents. Ex: R$ 80,000 = 8000000 |
taxaAdminConsorcio | number | — | Total consortium administration fee over the term (%). Ex: 20 = 20% |
anoFabricacaoVeiculo | integer | Yes | Vehicle manufacturing year. Affects depreciation estimates. |
Parameters from the server's own tool schema.
This is a financial calculator/simulator that performs arithmetic on provided inputs to produce informational output. It does not execute transactions, create accounts, move money, modify data, or trigger external operations.
From the tool's definition The tool 'calculates monthly installment', 'annual IPVA tax', 'estimated insurance range', 'projected 5-year depreciation', and 'total cost of ownership' — all read-only computations that retrieve or query data with no side effects.
Risk signalsHigh parameter count (12 properties)
Attacks that exploit this kind of access
Complete vehicle purchase simulator. Calculates monthly installment (CDC financing or consortium), annual IPVA tax by Brazilian state (2026 rates), estimated insurance range (3%-7%), projected 5-year depreciation, and total cost of ownership over 5 years. Also provides side-by-side comparison of CDC vs consortium installments. Use to plan a complete vehicle purchase budget before deciding on financing modality. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
calcular_planejamento_compra_veiculo accepts 9 parameters: estadoUf, modalidade, prazoMeses, custosTransacao, percentualEntrada, taxaJurosAnualBps, valorVeiculoCents, taxaAdminConsorcio, anoFabricacaoVeiculo. Required: estadoUf, modalidade, prazoMeses, percentualEntrada, taxaJurosAnualBps, valorVeiculoCents, anoFabricacaoVeiculo. 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_planejamento_compra_veiculo: 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_planejamento_compra_veiculo 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_planejamento_compra_veiculo 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_planejamento_compra_veiculo. 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_planejamento_compra_veiculo 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →