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

Annotations already declare readOnly/idempotent/non-destructive, so the safety profile is covered. The description steps in usefully with result behavior that annotations can't convey: a hard cap of 30 results and the shape of each item (población, estado de temporada, precio orientativo, URL). It omits ordering and the absence of pagination/offset.

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?

Purpose and scope are front-loaded, and the long sentence is dense but each clause carries information. The nested parentheses for the date rules slightly hamper scanability, keeping it below a 5.

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?

With 10 parameters fully documented in the schema, no output schema, and annotations covering the safety profile, the description supplies the remaining gap: what is returned, how many, and with which fields. An agent has everything needed to call and interpret this tool.

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 100%, so the schema carries all parameter meaning; the description's enumeration of filters and the date-range rule largely restates it. Baseline 3 applies since the description adds no syntax or defaults beyond what the schema already provides.

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 ('Busca campings de la guía BuscaTuCamping') and scopes it to a zone with optional filters. It implicitly contrasts with the sibling campings_cerca by framing the search as text-based on población/provincia/comunidad/nombre, but never names that sibling explicitly.

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 tells how to combine date filters ('un día con abierto_en o un rango con abierto_desde y abierto_hasta'), which is genuine usage guidance. However there is no explicit when-to-use-this vs campings_cerca or ficha_camping, and no mention of prerequisites or empty-result behavior.

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