Sicily Stays

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

With no annotations provided, the description carries full burden for behavioral traits. It states the tool returns 'full detail' but doesn't specify what that includes (e.g., pricing, amenities, images). It also doesn't confirm whether it only uses the input identifier without side effects or mutation, which would be relevant for an agent choosing between read and write operations. However, the simple single-parameter design implies a straightforward lookup.

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 a single, efficient sentence that front-loads the purpose and immediately adds context about the identifier's source. No unnecessary words or repetition.

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 (1 required parameter, no nested objects, no enums, no output schema), the description is mostly adequate. However, it doesn't explain the return format or confirm that no output schema is needed for interpretation. It also doesn't mention whether errors occur for invalid IDs, which could be helpful. For a simple tool, this is acceptable but not fully complete.

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 description mentions the identifier and references an example format (e.g., cef-001) from the schema. Since schema coverage is 100%, the description adds some context by linking the identifier to another tool's output, but doesn't provide additional meaning beyond what the schema's description already states.

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 fetches full details for one accommodation by identifier. It specifies the identifier comes from another tool (search_availability), adding context that distinguishes it from siblings like list_destinations which likely lists destinations rather than retrieving a single property.

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?

The description explicitly ties the identifier to the output of search_availability, providing clear guidance on when to use this tool (after getting an identifier from search results). It doesn't explicitly state alternatives or when not to use it, but the sibling context suggests it's for a single property vs. broader search or destination listing functions.

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

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

No annotations are provided, so the description carries full burden for behavioral disclosure. The description states it returns a list of destinations with property counts, implying a read-only query. It does not mention permissions, rate limits, or side effects, but for a simple listing operation with no parameters, the level of disclosure is adequate and consistent with the tool's nature.

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 a single sentence, front-loaded with the verb 'List', and contains no unnecessary words. It efficiently communicates both the action and the returned 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?

Given the tool has no parameters, no output schema, and low complexity, the description is fully complete. It explains what the tool does and what the output includes ('with how many properties each has'). The sibling context further clarifies its role in the service.

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?

There are 0 parameters, and the schema description coverage is 100% (vacuously). The description adds meaning beyond the empty schema by clarifying the tool lists destinations with property counts. Per the rubric for 0 parameters, baseline is 4.

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 'List the destinations covered by this service, with how many properties each has.' It uses a specific verb ('List') and resource ('destinations'), and adds value by specifying the returned data (property counts). It naturally distinguishes from siblings like 'get_property' (single property) and 'search_availability' (find available dates).

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?

The description implies when to use the tool (when a list of destinations with property counts is needed) but does not explicitly state when not to use it or name alternatives. Given the tool has no parameters and siblings are clearly different, the guidance is clear and sufficient, but lacks explicit exclusions.

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

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

No annotations are provided, so the description must fully disclose behavioral traits. It fails to clarify whether the tool only returns available properties, what happens if no dates are provided (only destination is required in the schema), or any side effects. Critical gaps remain for an accurate agent invocation.

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 a single sentence that front-loads the purpose ('Search availability...'). It is concise and contains no fluff, though it could be slightly more structured (e.g., listing the key filters). It earns its place.

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 no output schema, the description should explain what is returned, but it only vaguely states 'Returns properties matching...'. It does not address the optionality of dates or how to interpret results. With five parameters and one sibling, the description leaves significant gaps.

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 the baseline is 3. The description adds a mild grouping ('destination, date range and party size') but no new format or constraint details beyond what the schema already provides. The value added is minimal.

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 specifies the verb 'Search', the resource 'accommodation availability and indicative nightly rates', and the scope ('in Cefalu and northern Sicily'). This clearly differentiates from siblings: get_property (single property details) and list_destinations (list towns).

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?

The description implies when to use this tool (when needing availability and rates for a destination), but it does not explicitly contrast with siblings or advise when not to use it. No exclusions or alternative guidance is provided.

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