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

No annotations are provided, so the description carries the full burden and does reasonably well: it discloses the authentication requirement (panel key from the agenda link), the default behavior when no date is given ('Sin fecha, muestra hoy'), and what is returned (appointments with attendee, service, time, plus free slots). It stops short of stating permissions scope or whether the read is scoped strictly to one business, but this is solid disclosure for a read tool.

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?

Three short sentences, well front-loaded: audience, auth requirement, then return/default behavior. No filler, though it could be marginally tighter.

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?

An output schema exists, so return-value details are covered elsewhere; the description nonetheless summarizes the returned content and covers auth and the date default. For a 3-param read tool the remaining gap (negocio format, exact scope) is minor.

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%, so the description must compensate. It explains 'clave' (the panel key from the agenda link) and 'fecha' (absent = today), adding genuine meaning beyond the bare schema, but the 'negocio' parameter is only implied by 'DUEÑO de un negocio' and its expected format is never clarified.

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?

States a clear verb+resource ('ver cómo va su día' = view today's schedule) and names the audience ('Para el DUEÑO de un negocio'), which distinguishes it from owner-agnostic scheduling siblings. However the phrasing 'cómo va su día' is softer than a crisp 'list today's appointments', leaving slight ambiguity about the exact scope.

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?

Gives real context for when to use it (business owner viewing their own day) and notes it requires the panel key, but never names an alternative among the many scheduling siblings (consultar_disponibilidad, ver_servicios) or states when NOT to use it.

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