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

The description adds no behavioral detail beyond the endpoint; annotations already convey read-only, idempotent, and non-destructive behavior. It does not mention authentication, pagination, account scoping, rate limits, or response characteristics.

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 short sentence with no filler, front-loading the resource and action, and adding the exact endpoint. It is appropriately terse for a simple listing operation.

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?

With no output schema and two undocumented parameters, the description is not complete enough for reliable invocation. It omits filtering semantics, return shape, and pagination behavior, leaving important gaps.

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?

Both parameters ('query' and 'account') have 0% schema description coverage, and the description does not explain their meaning, format, or effect. An agent has no basis for knowing what values to supply.

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 uses the specific verb 'Listar' with the resource 'Usuários' and provides the exact endpoint 'GET /api/usuarios'. This clearly identifies the operation and distinguishes it from sibling tools by the target resource.

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 guidance is provided about when to use this tool versus alternatives, nor any mention of thresholds, exclusions, or related tools. The description only restates the action as a labeled endpoint, leaving usage context implied at best.

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