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

readOnlyHint=true and openWorldHint=false already establish this as a safe, closed-domain read, so the description does not need to argue safety. With no output schema, the field enumeration (rating, house rules, photos) is genuinely valuable disclosure of return content, but nothing is said about what happens with an invalid property code, whether photos are URLs, or any payload size or rate considerations.

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?

One tight sentence with zero filler and the resource stated first. The comma list of fields is slightly dense but every item maps to useful information, and nothing is redundant with the title.

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?

For a single-parameter lookup with no output schema, listing the returned field groups is the right instinct, but the definition leaves the caller's two open questions—where property_code comes from and what an unmatched code yields—entirely unanswered. Annotations cover the safety profile, so the remaining gap is instructional rather than behavioral.

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 single parameter is undocumented in both schema and description. The description never explains what property_code is, its format, or its provenance, so an agent must guess whether it is a numeric id, a slug, or an internal code.

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?

"Description, location, facilities, house rules, Google rating, room types and photos of one villa" names the resource (one villa) and enumerates exactly what comes back, which cleanly separates it from search_villas, check_availability and current_offers. It lacks an explicit verb ("Get"), but the name/title combination makes the operation unambiguous.

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?

There is no when-to-use guidance and no mention of when not to use it. Critically, it never says the property_code must first come from search_villas, which is the single decision point an agent faces when choosing among these four siblings.

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