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

No annotations are provided, so the description carries the full behavioral burden. It discloses owner-only scope and that this is the inverse of cerrar_horas, but does not explain side effects on bookings/availability, whether reopening is reversible, or permission requirements beyond 'DUEÑO'.

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?

Front-loaded with audience and purpose in the first sentence, then only the essential inverse relationship and trigger examples. No filler or repetition.

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?

Output schema exists, so return values need not be described. However, with five inputs, four required, and zero schema description coverage, the description is incomplete: it never clarifies the required parameters or their formats, which is a major gap for correct invocation.

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 gives no meaning for any of the five parameters. An agent learns nothing about negocio, clave, fecha, desde, or hasta beyond their bare names.

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 specific verb and resource: reopening hours that had been closed, restricted to the owner. It also explicitly names cerrar_horas as its opposite, so an agent can distinguish it from that sibling without opening either schema.

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 clear usage context: for the owner, with concrete user utterances like 'ya puedo el jueves' and 'ábreme la tarde otra vez'. It also points to cerrar_horas as the inverse operation, though it does not spell out explicit when-not conditions.

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