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

With no annotations, the description carries the behavioral burden and does disclose that the tool returns a compact overview with highlight keywords, price if available, and deductible short info. It also signals that this tool is deliberately not the full-details endpoint. Minor gaps like result ordering or behavior when no criteria match are not covered, but these are not critical for a search tool.

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, compact sentence that front-loads the search action and criteria, then summarizes the return content and points to the relevant sibling. Every part earns its place with no filler 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?

For a search tool with five optional parameters and no output schema, the description provides enough information to select and invoke it correctly, including what the result will look like and where to go for full details. It does not discuss interaction with compare_touren or get_termine_preise, but that is not essential for a correct call to this tool.

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?

Only 20% of parameters are described in the schema, but the description names all five filtering dimensions: region/experience, travel type, travel month, maximum duration, and maximum difficulty. This maps well to the actual parameters and largely compensates for the sparse schema, though it does not explain the enum values or difficulty scale beyond what the schema constraints already imply.

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 states a specific verb and resource: it finds matching US BIKE TRAVEL motorcycle tours based on customer wishes. It also explicitly differentiates itself from get_tour_details, making it clear that this is the search/list entry point rather than a details endpoint.

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 tells the agent to use get_tour_details for complete details, which is a clear alternative and a useful when-to-use/not-use signal. However, it does not mention the other siblings like compare_touren or get_termine_preise, so coverage of the full sibling landscape is incomplete.

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