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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false; the description reinforces this with 'Apenas observa' and adds the important behavioral fact that the decision cannot be made through this tool. It also adds scope ('profile:read') and risk classification, which the annotations do not express.

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 short sentences plus a compact metadata line; the core purpose and the observation-only constraint are front-loaded with no wasted text.

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, the description usefully enumerates the three return states, which compensates well. However, it leaves the required 'id' parameter undefined, so an agent knows what the tool answers but not precisely what input identifies the approval.

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?

There is one required parameter, 'id', with 0% schema description coverage, so the description carries the full burden — yet it never explains whether this id refers to the pending action, an approval request, or some other entity. The agent must guess what to pass, a real gap for a single-param tool.

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?

States a specific verb ('Consulta') and a precise resource ('se o usuário aprovou, rejeitou ou ainda não decidiu uma ação pendente'), enumerating the three possible states. It is unambiguous what the tool returns, though it does not name or distinguish itself from any sibling (none of the siblings are approval tools, so this is minor).

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?

Gives clear context ('ação pendente') and an explicit exclusion: 'Apenas observa; a decisão só pode ser tomada pelo usuário na página de aprovação' tells the agent it must not attempt to approve or reject. No alternative tools are named, but no sibling offers overlapping functionality, so the routing risk is low.

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