Obter entidade

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

With no annotations provided, the description carries the full burden. It discloses that the result is the 'registro completo' (full record), which adds some return-value context, but it does not mention error behavior, authentication needs, or explicitly confirm there are no side effects. 'Devolve' does imply a read operation, so it is minimally transparent.

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 direct sentence with no filler, front-loaded with the action verb and resource. Every word earns its place, making it appropriately concise for such a simple tool.

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 one-parameter retrieval tool, the description plus schema is mostly sufficient: the agent knows the tool returns a full entity record and that an ID is required. However, with no output schema and no usage guidance versus siblings, the description is only minimally complete and lacks edge-case context.

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 compensate by explaining the 'id' parameter or how it relates to the returned entity. The property name 'id' is self-explanatory, but the description adds no semantic value beyond the schema's field name and type.

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 states a clear retrieval action ('Devolve') and a specific resource ('o registro completo de uma entidade'), making it evident this is a read operation for a single entity. It does not explicitly differentiate itself from list_entities by mentioning lookup by ID, so it stops short of a 5.

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 gives no guidance on when to use this tool instead of siblings like list_entities, update_entity, or remove_entity. There are no conditions, exclusions, or alternative recommendations, leaving the agent to infer usage from the name and schema alone.

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