Busca leis brasileiras numa base curada de ~30 normas core (CLT, CTN, CF/88, LC 123, Lei 9.250 IRPF, Lei 8.036 FGTS, Lei 13.467 Reforma Trabalhista, etc.). Retorna nome oficial, ementa, link planalto.gov.br e artigos chave quando aplicáveis. Útil quando o LLM precisa citar fonte legal num cálculo...
AI agents call buscar_lei 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 |
|---|---|---|---|
termo | string | Yes | Termo de busca: pode ser nome de lei ("CLT", "Lei 9.250"), tópico ("rescisão", "FGTS", "Simples Nacional"), artigo específico ("art. 487"), ou keyword ("aviso p |
limite | integer | — | Quantos resultados máximos retornar. Default 3. |
categoria | string | — | Filtrar por categoria: trabalhista, tributario, previdenciario, civil, consumidor, imobiliario, empresarial. |
Parameters from the server's own tool schema.
This tool performs read-only queries against a local curated database of Brazilian laws and regulations. It searches for and returns legal information (official names, summaries, links, relevant articles) without any side effects.
From the tool's definition Tool description explicitly states: 'Busca leis brasileiras numa base curada', 'Retorna nome oficial, ementa, link', 'Match fuzzy por id, keyword, nome, ementa, artigo', 'Não faz fetch externo — base local.' The verb 'buscar' (search) and 'retorna' (returns)…
Attacks that exploit this kind of access
Busca leis brasileiras numa base curada de ~30 normas core (CLT, CTN, CF/88, LC 123, Lei 9.250 IRPF, Lei 8.036 FGTS, Lei 13.467 Reforma Trabalhista, etc.). Retorna nome oficial, ementa, link planalto.gov.br e artigos chave quando aplicáveis. Útil quando o LLM precisa citar fonte legal num cálculo, validar argumento jurídico, ou pesquisar. Match fuzzy por id, keyword, nome, ementa, artigo. Não faz fetch externo — base local. Pra leis fora da base, dá fallback útil. Aceita filtro por categoria. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
buscar_lei accepts 3 parameters: termo, limite, categoria. Required: termo. 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 buscar_lei: 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.
buscar_lei 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 buscar_lei 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 buscar_lei. 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.
buscar_lei 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.
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