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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds useful content details (policies, contact, amenities) but does not disclose return format, caching, or any behavior beyond what the annotations provide.

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 front-loaded with the resource type and key facts, followed by a concrete usage sentence. It is somewhat list-heavy but every element earns its place by signaling the available information.

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 zero-parameter, read-only info tool with no output schema, the description sufficiently enumerates the kinds of facts returned and when to use it. The main gap is lack of explicit sibling differentiation, but the core information needed to call it correctly is present.

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?

The tool has zero parameters, so parameter semantics are not applicable and the baseline is 4. The description does not need to explain parameter usage.

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 clearly states the tool returns facts about Vegoritida Apartments, including location, drive times, amenities, house rules, payment/cancellation policy, and contact details. This is a specific resource with concrete content, though it does not explicitly contrast itself with sibling tools such as list_apartments or get_local_guide.

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 a clear usage context: use when someone looks for a place to stay near the listed places or wants a quiet, lesser-known destination in Greece. It does not explicitly say when not to use it or name alternatives like check_availability or book_stay.

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