Consulta cadastral de um CNPJ (grátis): razão social, nome fantasia, situação cadastral, CNAE principal, porte, município/UF e SÓCIOS (QSA). Útil pra identificar a empresa e seus sócios antes de buscar processos.
| Name | Required | Description | Default |
|---|---|---|---|
| cnpj | Yes |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, so the safety profile is clear. The description adds specifics on returned data but not additional behaviors like rate limits or auth—adequate but not extra.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two well-structured sentences. Front-loaded with core function, then lists returned fields and a usage hint. No wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple lookup with one parameter, it adequately describes purpose, return data, and context. Missing parameter format details slightly reduces completeness, but overall sufficient.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Only one parameter (cnpj) with 0% schema description coverage. The description does not specify input format (e.g., with/without punctuation) or validation rules, leaving the agent without guidance beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it consults CNPJ registration data, listing specific fields returned (razão social, nome fantasia, etc.). It distinguishes from sibling tools like cnpj_processos by focusing on the cadastral query.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly suggests using this before searching for processes (Útil pra identificar a empresa e seus sócios antes de buscar processos). Does not compare to other siblings or give when-not-to-use, but context is clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
There is substantial overlap among the process-discovery tools: cnpj_processos, cpf_processos, djen_processos_por_parte, processos_buscar_por_nome, processos_buscar_por_documento, and legal_dossie all lead to finding the same kind of case by party/document, differing mainly by backend and sync/async details. The verbose descriptions mitigate the confusion, but an agent still has to reason through several competing entry points with unclear boundaries.
The set uses domain prefixes and snake_case, but mixes English and Portuguese action verbs (djen_search_comunicacoes vs. djen_processos_por_parte; processos_get_resultado vs. processos_buscar_por_nome) and includes bare-noun names like cnpj_processos, legal_dossie, and transparencia_pep. Platform/utility tools (connect, marketplace, show_version) use a different English naming style, so no single pattern is followed.
30 exposed tools exceeds the scale's heavy threshold and the count is inflated by platform/admin/marketplace meta-tools as well as multiple near-redundant discovery backends. A more scoped legal server could merge the process-finding variants and keep the utility/marketplace features separate.
The server covers a lot of ground—company/CPF data, DJEN and portal discovery, jurisprudence full text, monitoring, transparency, PEP, and sanctions—but there is no native current-case-status/movimentaçoes tool, and the descriptions repeatedly tell agents to enrich with datajud_* tools that are not exposed directly in this list. That is a significant workflow gap for a tool advertised as an alternative to Jusbrasil.