calculate_iof_resgate
Calcula quanto o IOF come de um resgate feito antes de 30 dias (caixinha, CDB, Tesouro): a tabela regressiva do Decreto 6.306 no dia exato, o IR de 22,5% sobre o restante, e quanto a mais fica esperando até o dia 30. Parâmetros obrigatórios: principal, days. Opcionais: cdi_percent. Use exatamente...
This record as markdown: /tools/com-falazuki-finance-br/calculate-iof-resgate.md
What calculate_iof_resgate does on FalaZuki Finance BR
AI agents call calculate_iof_resgate 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 |
|---|---|---|---|
days | integer | Yes | Dias corridos desde a aplicação (1-30) |
principal | number | Yes | Valor aplicado em R$ |
cdi_percent | number | — | Percentual do CDI que a aplicação paga (100 = CDI cheio) |
Parameters from the server's own tool schema.
Why calculate_iof_resgate is rated Low
Even though calculate_iof_resgate 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_iof_resgate 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_iof_resgate, this is the rule to start with:
calculate_iof_resgate 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_iof_resgate call is checked against it from then on.
Questions about calculate_iof_resgate
Calcula quanto o IOF come de um resgate feito antes de 30 dias (caixinha, CDB, Tesouro): a tabela regressiva do Decreto 6.306 no dia exato, o IR de 22,5% sobre o restante, e quanto a mais fica esperando até o dia 30. Parâmetros obrigatórios: principal, days. Opcionais: cdi_percent. 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_iof_resgate accepts 3 parameters: days, principal, cdi_percent. Required: days, principal. 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_iof_resgate: 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_iof_resgate 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_iof_resgate 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_iof_resgate. 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_iof_resgate 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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