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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the description is consistent with the safety profile. However, the description adds no extra behavioral context beyond the basic search operation, such as matching semantics, result ranking, or potential ambiguity of natural-language queries.

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 two sentences: it leads with the main purpose, gives illustrative examples, and ends with parameter usage. Every word contributes; no filler or redundant 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 simple read-only search tool with no output schema, the description adequately explains the operation and the expected input. It clearly implies the result type ('vacation rentals') but could be slightly more explicit about what the response contains (e.g., a list of matching rentals). Overall, it covers the essentials without over-explaining.

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 coverage is 100% for all three parameters, so the baseline is 3. The description adds value by providing examples of natural-language query values and explicitly stating that location is optional, enhancing the schema's terse descriptions.

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 specifies a clear action ('Search'), a resource ('vacation rentals'), and a distinguishing scope ('by amenity description using natural language'). Concrete examples ('pool and hot tub', 'pet-friendly with fenced yard') make the function's intent unmistakable and differentiate it from generic search tools.

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 searching by amenity description') and mentions an optional location filter, but it does not explicitly distinguish it from siblings like search_vacation_rentals_by_description or provide when-not-to-use guidance. With many sibling search tools, explicit alternatives would be valuable.

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