get_tour_detail

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

With no annotations provided, the description carries the burden of behavioral disclosure. It mentions that the tool returns a JSON string, which is helpful, but it does not disclose whether the operation is read-only, what happens if the course_no doesn't exist, or any error behavior. The verb 'Fetch' implies safety but it's not explicit.

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 concise, with two sentences that front-load the action and purpose. Every sentence adds value, and there is no fluff or unnecessary detail.

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?

The tool is simple with one parameter and an output schema, so the description covers the essentials. However, it does not explicitly note the relationship to sibling tools like get_general_tour_detail or mention any preconditions (e.g., obtain course_no from search_tours). This small gap prevents a perfect score.

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 schema already provides 100% coverage for the single parameter 'course_no' with a description and examples. The tool description adds no additional meaning beyond restating that it fetches by course_no. Since schema coverage is high, a baseline of 3 is appropriate.

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 uses a specific verb 'Fetch' and clearly identifies the resource: detailed information, schedule, pricing, and bus stops for a specific Maitabi mountain bus tour by course_no. This distinguishes it from siblings like search_tours and get_general_tour_detail by specifying the unique identifier (course_no).

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 clearly implies this tool is used when you have a specific course_no for a Maitabi mountain bus tour, which differentiates it from search tools. However, it does not explicitly state when not to use it or mention alternatives, so it falls slightly short of a 5.

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