Calcula DAS-MEI (Documento de Arrecadação do Simples Nacional - MEI). Composição fixa: 5% INSS sobre salário mínimo + R$ 1 (comércio/indústria, ICMS) ou R$ 5 (serviço, ISS) ou ambos. Para 2026 com SM R$ 1.518: comércio R$ 76,90 mensal, serviço R$ 80,90, comércio+serviço R$ 81,90. Faturamento limi...
AI agents call calcular_mei_das to retrieve information from Contaí — Calculadoras Fiscais Brasileiras without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
atividade | string | Yes | Tipo de atividade MEI: comercio_industria=ICMS, servico=ISS, comercio_servico=ICMS+ISS |
mesesPagos | integer | — | Quantos meses de DAS calcular. Default 12 = ano inteiro. |
Parameters from the server's own tool schema.
This is a purely computational tool that reads input parameters (salary minimum, business type) and returns calculated tax values. It has no side effects—it does not create records, modify data, execute commands, delete anything, or move money. The classification is Read because the tool retrieves and computes existing fiscal data according to Brazilian law formulas.
From the tool's definition Tool 'calcular_mei_das' performs calculation of MEI tax obligations (DAS-MEI). The description indicates it computes and returns tax amounts based on fixed formulas (5% INSS + fixed fees) without creating, modifying, deleting, or executing external operations.
Attacks that exploit this kind of access
Calcula DAS-MEI (Documento de Arrecadação do Simples Nacional - MEI). Composição fixa: 5% INSS sobre salário mínimo + R$ 1 (comércio/indústria, ICMS) ou R$ 5 (serviço, ISS) ou ambos. Para 2026 com SM R$ 1.518: comércio R$ 76,90 mensal, serviço R$ 80,90, comércio+serviço R$ 81,90. Faturamento limite anual R$ 81.000. Fonte: LC 123/2006 art. 18-A + tabelas mensais MEI. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
calcular_mei_das accepts 2 parameters: atividade, mesesPagos. Required: atividade. 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_mei_das: 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_mei_das 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_mei_das 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_mei_das. 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_mei_das 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →