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

Annotations already mark read-only/idempotent/non-destructive; the description adds meaningful behavioral context: payment via prepaid credits, no platform credentials, data source equivalence to citizen-accessible official information, and LGPD data-controller responsibility. No contradiction with annotations.

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 compact and purpose-first, with four short sentences covering payment, source, and legal context. Slight redundancy exists between 'consulta em fonte oficial' and 'Consulta informação de fontes e órgãos oficiais brasileiros', but it remains efficient.

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 7-parameter tool with no output schema and no parameter descriptions, the description provides useful high-level context (official source, payment, LGPD) but lacks parameter semantics and return-value expectations, making it adequate but not fully complete.

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 required parameters such as a3, a3_pin, login_cpf, or login_senha. It only hints that the credentials are not platform credentials and that consultation is paid, leaving parameter meaning largely to inference from 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 clearly identifies the tool as a query/consulta for ECRVSP Stampagem Authorization data from official Brazilian sources ('consulta em fonte oficial'). It distinguishes this from generic sibling tools by naming the specific official-source query domain, though it does not explicitly contrast it with siblings.

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?

The description provides clear operational context: the tool is hosted by the platform, requires no platform credentials, works on prepaid per-query credit, and concerns non-confidential official data. It implies when to use it but does not explicitly list when not to use it or name alternative tools.

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