Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare read-only, idempotent, non-destructive behavior; the description adds payment requirements, no-credential access, the non-confidential nature of the queried data, and LGPD controller responsibilities. It does not contradict annotations, but omits response/error behavior.

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?

The description is four sentences, front-loaded with the core purpose and followed by operational/legal context. It is reasonably concise, though the official-source and non-confidential statements could be tightened without losing meaning.

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 paid query tool with no output schema and four optional parameters, the description fails to explain parameter usage, input formatting, expected return values, or failure/credit edge cases. It provides good legal and access context, but not enough operational completeness.

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?

Schema description coverage is 0%, and the description does not explain any of the four parameters (cpf, cnpj, nome, competencia), their formats, or valid combinations. With no param guidance in the description, the agent is left to infer all parameter semantics from bare property names.

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 names the resource ('Certidão Judicial' from 'Tribunal TJTO') and the action ('consulta em fonte oficial'), clearly distinguishing it from generic system/marketplace siblings. It is not quite a 5 because it does not specify what information the certificate returns.

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?

It gives useful operational context: the tool is platform-hosted, requires no platform credentials, and is paid per query with prepaid credit. It does not explicitly state when to use it over alternatives, though no close alternative exists among the listed siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.