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

Annotations already declare readOnlyHint=true and idempotentHint=true; the description adds useful behavioral context: no platform credentials required, prepaid per-query cost, data is the same as citizen-available (non-confidential), and client is LGPD controller. These details go beyond the annotations without contradicting them.

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 a single dense paragraph; it conveys multiple pieces of info (source, cost, legal) but could be better structured. It is not overly long, but each sentence could be clearer; still, it is not bloated.

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?

There is no output schema, so the description should clarify what data is returned, but it only says 'consulta informação de fontes e órgãos oficiais'. It omits return fields, example usage, or any functional details about the consultation, leaving a significant gap for a simple one-parameter tool.

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%, so the description must compensate, but it does not explain the single parameter 'inscricao' (e.g., format, expected values, or example). The parameter name hints at a registration number, but the description adds nothing beyond what the schema already shows.

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 indicates this is a query tool for CRO-MG registration data ('Cadastro, consulta em fonte oficial') but lacks a specific verb- resource structure and does not clearly state what is returned. It is distinguishable from generic platform siblings due to the explicit mention of the council and official source, so it is not a tautology but remains vague.

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?

No explicit when-to-use or alternative references are provided. Mentions prepaid credit and LGPD responsibility, but these are contextual disclaimers rather than actionable guidance on when to choose this tool over others or what scenarios it is appropriate for.

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