calculate_savings_return
Simula o rendimento da poupança com aportes mensais, aplicando a regra da Lei 12.703/2012: 0,5% ao mês mais TR com a Selic acima de 8,5% ao ano, 70% da Selic mais TR abaixo disso. Parâmetros obrigatórios: initial_amount, months, selic_annual. Opcionais: monthly_deposit. Use exatamente estes nomes...
This record as markdown: /tools/com-falazuki-finance-br/calculate-savings-return.md
What calculate_savings_return does on FalaZuki Finance BR
AI agents call calculate_savings_return 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 | Prazo em meses |
selic_annual | number | Yes | Selic meta anual em %, ex: 14.25 |
initial_amount | number | Yes | Valor inicial em R$ |
monthly_deposit | number | — | Aporte mensal em R$ |
Parameters from the server's own tool schema.
Why calculate_savings_return is rated Low
Even though calculate_savings_return 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_savings_return 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_savings_return, this is the rule to start with:
calculate_savings_return 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_savings_return call is checked against it from then on.
Questions about calculate_savings_return
Simula o rendimento da poupança com aportes mensais, aplicando a regra da Lei 12.703/2012: 0,5% ao mês mais TR com a Selic acima de 8,5% ao ano, 70% da Selic mais TR abaixo disso. Parâmetros obrigatórios: initial_amount, months, selic_annual. Opcionais: monthly_deposit. 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_savings_return accepts 4 parameters: months, selic_annual, initial_amount, monthly_deposit. Required: months, selic_annual, initial_amount. 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_savings_return: 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_savings_return 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_savings_return 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_savings_return. 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_savings_return 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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