Lista todos os 27 estados brasileiros (26 estados + Distrito Federal) com suas siglas UF. Use quando precisar consultar as siglas dos estados ou quando o usuário perguntar "quais são os estados do Brasil". Retorna sigla (UF) e nome completo de cada estado.
Part of the Brazil Holidays - FeriadosAPI MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call listar_estados 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 listar_estados 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.
tools:
listar_estados:
rules:
- action: allowSee the full Brazil Holidays - FeriadosAPI policy for all 7 tools.
Agents calling read-class tools like listar_estados have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
Lista todos os 27 estados brasileiros (26 estados + Distrito Federal) com suas siglas UF. Use quando precisar consultar as siglas dos estados ou quando o usuário perguntar "quais são os estados do Brasil". Retorna sigla (UF) e nome completo de cada estado.. It is categorised as a Read tool in the Brazil Holidays - FeriadosAPI MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for listar_estados. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Brazil Holidays - FeriadosAPI MCP server.
listar_estados 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 listar_estados rule in your Intercept 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 Intercept policy for listar_estados. 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.
listar_estados is provided by the Brazil Holidays - FeriadosAPI MCP server (feriadosapi/brazilian-holidays). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept