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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds real value by disclosing the full content inventory (policies, contact info, approximate location) with no output schema to carry it. It does not state what happens for an unknown property_id.

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 core purpose, and the field enumeration is justified because no output schema exists. Dense but every item maps to real content an agent would otherwise not know about.

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, the description correctly substitutes a return-content inventory, and annotations cover the safety profile for this idempotent read. Gaps are minor: no error behavior for a missing property_id and no mention of how the language parameter changes the response.

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 both property_id ('from search results') and language ('en (default) or es') are already documented in structured data. The description adds nothing about parameter behavior, such as whether language affects the returned content of the property details, so baseline 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?

States a specific verb and resource ('Full details for one ... rental') and enumerates exactly what the record contains, so an agent knows the payload shape before calling. It explicitly separates itself from get_quote for pricing, though it does not distinguish itself from search_properties or check_availability.

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?

Names the alternative for pricing ('Use get_quote for prices') and, via the schema hint, anchors property_id to search results — a clear retrieval workflow. No explicit when-not or prerequisites beyond that, so it stops short of a 5.

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