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

With no annotations, the description carries the full burden of behavioral disclosure. It only states the basic search function and does not mention behavior such as filtering by campo/tecnica, pagination (limit/offset), rating threshold (valoracion_minima), or return format. This is minimal but not contradictory.

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 concise sentence with no filler or redundancy. It is front-loaded with the essential action and resource, making it highly scannable.

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 6 parameters, no output schema, and no annotations, the description is too minimal. It fails to provide necessary context about available filters, pagination, or how it differs from related tools, making it difficult for an agent to know how to use it correctly beyond the basic search intent.

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 adds no meaning to any of the 6 parameters. It does not explain the purpose of 'campo', 'tecnica', or 'valoracion_minima', leaving the agent to infer their roles from names alone, which is insufficient for correct invocation.

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 'Busca' (searches) with a clear resource 'reseñas de libros' (book reviews) and mentions the source platform. It distinguishes from sibling tools like obtener_resena (which retrieves a single review) and other buscar_* tools by specifying the content type.

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 usage context is implied by the description: agents should use this tool when searching for book reviews. However, there is no explicit when/when-not guidance or mention of alternatives such as buscar_todo or obtener_resena, leaving some ambiguity.

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