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

Annotations already cover read-only, idempotent, non-destructive, and closed-world behavior. The description adds useful behavioral context beyond annotations: it checks availability first and explicitly does not book or hold dates, which is important for a link-generation tool adjacent to booking actions.

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 short and front-loads the key action: build the booking link. The bilingual Spanish/English duplication is somewhat redundant, but each language block is concise and no sentence is excessively wordy.

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 low complexity, full schema coverage, and strong annotations, the description is complete enough. It covers purpose, prerequisite availability checking, and the crucial limitation that it does not book or hold dates; no output schema exists, but 'builds the link' adequately signals the return.

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 all four parameters are already documented in the input schema, including departamento_id coming from buscar_disponibilidad. The description only repeats that dates and guests are prefilled and does not add syntax or format details beyond the schema, so the baseline score of 3 applies.

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 states a specific verb and resource: it builds a booking/payment link for mrbnb.cl with dates and guests prefilled. It also distinguishes itself from a booking tool by explicitly saying it does not book or hold dates, helping separate it from sibling tools like buscar_disponibilidad and cotizar.

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?

It gives clear context: use this to build a prefilled booking link, and it says availability should be checked first. It also clarifies a when-not condition by stating it does not book or hold dates. However, it does not explicitly name the sibling alternatives or give a full decision rule among them.

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