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

No annotations are provided, so the description carries the full burden. It mentions that confirmation arrives via WhatsApp/SMS, which is a behavioral outcome, but it doesn't disclose that this is a write operation (creating a booking) or mention potential side effects like conflict handling. This is a moderate gap given no annotations.

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 concise and well-structured, with bilingual text that duplicates but doesn't add fluff. It efficiently communicates the core action, prerequisite, and result without unnecessary detail.

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 absence of an output schema and annotations, the description covers the prerequisite and the confirmation outcome. However, it doesn't address error scenarios, idempotency, or the exact effect on the system (e.g., whether it's a final booking). This is adequate for a simple booking tool but lacks some context for full completeness.

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 88% (7/8 parameters described). Most parameters have meaningful descriptions, including sources (from consultar_disponibilidad) and formats (HH:MM, YYYY-MM-DD). The 'notas' parameter lacks a description, which is a slight gap, but overall semantics are clear.

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 books a real appointment as a guest, distinguishing it from other sibling booking tools like reservar_clase or reservar_habitacion. It also emphasizes 'REAL' to indicate an actual booking action.

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 explicitly instructs to use consultar_disponibilidad first to pick time and staffId, providing a clear prerequisite. It implies the tool is for guest booking, though it doesn't explicitly mention when not to use it, but the context is sufficient.

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