calculate_ipca_plus
Simula renda fixa IPCA+ (CDB ou Tesouro IPCA+): taxa real contratada, inflação projetada, IR sobre o ganho nominal inteiro e a taxa real líquida que sobra do '+X%'. Expõe quanto da proteção contra inflação o imposto leva. Parâmetros obrigatórios: principal, real_rate, months. Opcionais: inflation...
This record as markdown: /tools/com-falazuki-finance-br/calculate-ipca-plus.md
What calculate_ipca_plus does on FalaZuki Finance BR
AI agents call calculate_ipca_plus to retrieve information from FalaZuki Finance BR 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 |
|---|---|---|---|
months | integer | Yes | Meses até o vencimento (1-360) |
inflation | number | — | Inflação projetada em % a.a. pro período (padrão 4,5) |
principal | number | Yes | Valor investido em R$ |
real_rate | number | Yes | Taxa real contratada em % a.a. (o '+6,5' do IPCA+6,5%) |
Parameters from the server's own tool schema.
Why calculate_ipca_plus is rated Low
Even though calculate_ipca_plus only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs calculate_ipca_plus safely
PolicyLayer is an MCP gateway: it sits between your AI agents and FalaZuki Finance BR, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calculate_ipca_plus, this is the rule to start with:
calculate_ipca_plus is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect FalaZuki Finance BR, apply this rule, and every calculate_ipca_plus call is checked against it from then on.
Questions about calculate_ipca_plus
Simula renda fixa IPCA+ (CDB ou Tesouro IPCA+): taxa real contratada, inflação projetada, IR sobre o ganho nominal inteiro e a taxa real líquida que sobra do '+X%'. Expõe quanto da proteção contra inflação o imposto leva. Parâmetros obrigatórios: principal, real_rate, months. Opcionais: inflation. Use exatamente estes nomes, em inglês. It is categorised as a Read tool in the FalaZuki Finance BR MCP Server, which means it retrieves data without modifying state.
calculate_ipca_plus accepts 4 parameters: months, inflation, principal, real_rate. Required: months, principal, real_rate. The full parameter table on this page comes from the server's own tool schema.
Register the FalaZuki Finance BR MCP server in PolicyLayer and add a rule for calculate_ipca_plus: 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 FalaZuki Finance BR. Nothing to install.
calculate_ipca_plus 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 calculate_ipca_plus 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 calculate_ipca_plus. 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.
calculate_ipca_plus is provided by the FalaZuki Finance BR MCP server (https://mcp.falazuki.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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