get_accumulated_return
Quanto um valor virou seguindo a série histórica REAL de um índice brasileiro (Selic, CDI, IPCA, poupança, dólar ou euro), acumulando mês a mês com a taxa que valeu em cada mês, sem taxa média. Ex.: quanto renderam R$ 10.000 no CDI de 2020 até hoje.
This record as markdown: /tools/com-falazuki-finance-br/get-accumulated-return.md
What get_accumulated_return does on FalaZuki Finance BR
AI agents call get_accumulated_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 |
|---|---|---|---|
to | string | — | Data final em YYYY-MM-DD (padrão: hoje) |
from | string | Yes | Data inicial em YYYY-MM-DD (série disponível desde 2000) |
index | string | Yes | Índice: selic e cdi acumulam juros; ipca corrige pela inflação; poupanca aplica a regra vigente; dollar e euro seguem o câmbio. |
amount | number | Yes | Valor inicial em R$ |
Parameters from the server's own tool schema.
Why get_accumulated_return is rated Low
Even though get_accumulated_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 get_accumulated_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 get_accumulated_return, this is the rule to start with:
get_accumulated_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 get_accumulated_return call is checked against it from then on.
Questions about get_accumulated_return
Quanto um valor virou seguindo a série histórica REAL de um índice brasileiro (Selic, CDI, IPCA, poupança, dólar ou euro), acumulando mês a mês com a taxa que valeu em cada mês, sem taxa média. Ex.: quanto renderam R$ 10.000 no CDI de 2020 até hoje. It is categorised as a Read tool in the FalaZuki Finance BR MCP Server, which means it retrieves data without modifying state.
get_accumulated_return accepts 4 parameters: to, from, index, amount. Required: from, index, 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 get_accumulated_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.
get_accumulated_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 get_accumulated_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 get_accumulated_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.
get_accumulated_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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