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

Annotations already declare readOnly, idempotent, non-open-world behavior. The description adds useful context beyond that: the season status is evaluated as of a given date and includes where and when it was verified, and the price is only orientativo. Missing only error/edge-case behavior when neither identifier is provided.

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?

Two sentences, front-loaded with the resource description and ending with the identification guidance. The long field enumeration earns its place because no output schema exists, though it is dense in a single clause.

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 no output schema, listing the returned fields is exactly what an agent needs to judge relevance, and that is done thoroughly. The remaining gap is the zero-required-parameter situation: the description never states whether an id, a URL, or neither is acceptable.

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 coverage is 100%, so each parameter is already documented; the description still adds routing value by tying id to buscar_campings and noting that fecha (default today) determines the season state for each camping. It does not, however, resolve the ambiguity of which identifier wins if both id and url are passed.

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 resource (camping data from the BuscaTuCamping guide) and enumerates the returned fields precisely, from location to season status, price, services and offers. It also names the sibling buscar_campings as the source of the id, which lets an agent distinguish this detail lookup from the search tools.

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?

Explains the two identification routes — id returned by buscar_campings, or the ficha URL — which effectively documents the intended workflow (search first, then fetch the ficha). It does not spell out what happens if neither is supplied, nor explicitly excludes any use case, so it stops short of full when/when-not guidance.

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