Lista todos os feriados de um estado brasileiro (feriados nacionais + estaduais daquele UF). Use quando o usuário perguntar sobre feriados em um estado específico, como "feriados em São Paulo" ou "feriados do RJ". As siglas dos estados (UF) são: AC, AL, AP, AM, BA, CE, DF, ES, GO, MA, MT, MS, MG,...
Part of the Brazil Holidays - FeriadosAPI server.
Free to start. No card required.
AI agents call feriados_por_estado to retrieve information from Brazil Holidays - FeriadosAPI without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though feriados_por_estado only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"feriados_por_estado": {}
}
}See the full Brazil Holidays - FeriadosAPI policy for all 7 tools.
These attack patterns abuse exactly the kind of access feriados_por_estado gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Lista todos os feriados de um estado brasileiro (feriados nacionais + estaduais daquele UF). Use quando o usuário perguntar sobre feriados em um estado específico, como "feriados em São Paulo" ou "feriados do RJ". As siglas dos estados (UF) são: AC, AL, AP, AM, BA, CE, DF, ES, GO, MA, MT, MS, MG, PA, PB, PR, PE, PI, RJ, RN, RS, RO, RR, SC, SP, SE, TO.. It is categorised as a Read tool in the Brazil Holidays - FeriadosAPI MCP Server, which means it retrieves data without modifying state.
Register the Brazil Holidays - FeriadosAPI MCP server in PolicyLayer and add a rule for feriados_por_estado: 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 Brazil Holidays - FeriadosAPI. Nothing to install.
feriados_por_estado 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 feriados_por_estado 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 feriados_por_estado. 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.
feriados_por_estado is provided by the Brazil Holidays - FeriadosAPI MCP server (feriadosapi/brazilian-holidays). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Brazil Holidays - FeriadosAPI tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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