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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the description doesn't need to repeat safety. It adds behavioral context: bulk support for batched execution, which is useful. However, it doesn't disclose any nuances like pagination, error behavior, or required auth context. With annotations covering safety, a 3 is appropriate.

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 two sentences with no filler. It front-loads the core purpose and adds the bulk note concisely. Every word earns its place.

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?

Given the tool has 4 parameters, no output schema, and simple GET semantics, the description covers the primary functionality and bulk support. However, the unexplained 'query' and 'account' parameters and lack of output format info leave gaps for an agent, but for a simple get operation with annotations, it's acceptable. Overall, minimally adequate.

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%: no parameter descriptions in the schema. The description mentions 'ids' for bulk but does not explain the exact format of 'id', 'ids', 'query', or 'account'. The 'query' and 'account' parameters are completely unexplained. The description adds minimal value beyond the schema property names, failing to compensate for low coverage.

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 states the tool fetches business loss reasons by ID via GET endpoint, distinguishing it from list/create/update/delete siblings. The purpose is specific: 'Buscar motivos de perda por ID' (fetch loss reasons by ID). It could be more explicit about the resource type but is clear enough.

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 states the primary use case (fetch by ID) and mentions bulk support via 'ids', which implies when to use ids instead of id. However, it does not explicitly say when NOT to use this tool vs alternatives like list (for fetching all) or the sibling get tools for other resources. No direct alternative mentioned.

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