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

No annotations are provided, so the description carries the burden. It states it retrieves the complete content of a published review, but it does not disclose potential 404 behavior, authentication needs, or rate limits. For a simple fetch, this is acceptable but lacks depth.

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, well-structured sentence that leads with the verb and includes all essential information. No fluff or redundancy.

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 simple one-parameter retrieval tool with no output schema, the description covers the purpose and identifier adequately. It mentions 'contenido completo' as the return, but it could benefit from edge-case behavior (e.g., not found). Overall, it is sufficiently complete for this complexity level.

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?

The schema only declares 'slug' as a string without description. The description adds meaning by clarifying that the slug can be either the main slug or 'slug_en', which goes beyond the schema. It does not give format examples but still contributes useful semantics.

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 a specific verb ('Obtiene') and resource ('contenido completo de una reseña de libro'), and clearly indicates the identifier ('por su slug'). It distinguishes itself from sibling tools like 'buscar_resenas' and other 'obtener_*' tools that target different entities.

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 implies this tool should be used when you have a slug (or slug_en) to retrieve a specific review, but it does not explicitly contrast with 'buscar_resenas' for search scenarios. The context is clear, but exclusions or alternative tool mentions are absent.

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