calcular_dividend_yield
Calcula Dividend Yield (DY) ponderado de uma carteira inteira (até 50 ativos: ações, FIIs, ETFs). DY ponderado = Σ(dividendosAnual_i) / Σ(valorInvestido_i) × 100. Retorna: DY ponderado, renda passiva mensal/anual, valor total investido, porAtivo (DY individual de cada ticker) e flag valorAnomalo ...
This record as markdown: /tools/io-github-lfhillesheim-contai-mcp-server/calcular-dividend-yield.md
What calcular_dividend_yield does on Contaí — Calculadoras Fiscais Brasileiras
AI agents call calcular_dividend_yield to retrieve information from Contaí — Calculadoras Fiscais Brasileiras 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 |
|---|---|---|---|
ativos | array | Yes | Lista de ativos da carteira (1 a 50). Cada item: { ticker, precoAcaoCents, dividendosAnualCents, quantidade }. BREAKING: v2.0.0 — antes era 1 ativo escalar (pre |
Parameters from the server's own tool schema.
Why calcular_dividend_yield is rated Low
This tool performs financial calculations and data retrieval (dividend yield analysis) based on input portfolio data. It retrieves and computes derived metrics—DY ponderado, passive income projections, per-asset DY—without creating, modifying, deleting, or executing any financial transactions. No money is moved, no orders are placed, and no external operations are triggered.
From the tool's definition Calcula Dividend Yield ponderado... Retorna: DY ponderado, renda passiva mensal/anual...
Attacks that exploit this kind of access
The rule that runs calcular_dividend_yield safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Contaí — Calculadoras Fiscais Brasileiras, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For calcular_dividend_yield, this is the rule to start with:
calcular_dividend_yield 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 Contaí — Calculadoras Fiscais Brasileiras, apply this rule, and every calcular_dividend_yield call is checked against it from then on.
Questions about calcular_dividend_yield
Calcula Dividend Yield (DY) ponderado de uma carteira inteira (até 50 ativos: ações, FIIs, ETFs). DY ponderado = Σ(dividendosAnual_i) / Σ(valorInvestido_i) × 100. Retorna: DY ponderado, renda passiva mensal/anual, valor total investido, porAtivo (DY individual de cada ticker) e flag valorAnomalo (DY > 100% em algum ativo). It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
calcular_dividend_yield accepts 1 parameter: ativos. Required: ativos. 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_dividend_yield: 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_dividend_yield 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_dividend_yield 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_dividend_yield. 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_dividend_yield 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.
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