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

With no annotations provided, the description carries the full burden. It discloses the meaning of statuses (bookable, full, closed) and the default date range (60 days from today if no date is provided). This is useful behavioral context, but it does not explicitly state that the operation is read-only or describe any side effects, though the verb '查' implies a query.

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, using three short sentences that front-load the purpose and then add key behavioral details (status meanings and default range). There is no fluff or repetition. It could be slightly more structured, but it is efficient and easy to parse.

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 tool with two optional parameters and no output schema, the description should explain what from and to mean and what the response looks like. It covers the status values and default range but omits parameter semantics and any return format details. This leaves the agent guessing on how to construct a valid request, especially for the range boundaries.

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 0%, so the description must explain the parameters. It mentions '日期不填' (if date not filled) defaults to today+60 days, which implies the from/to parameters form a date range, but it does not clarify which parameter is the start or end, nor explain the format or meaning beyond the default. The description adds partial value but is insufficient for the two parameters.

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 checks which dates are bookable and what 10-minute pickup slots exist, with a specific verb ('查') and resource. It distinguishes itself from siblings like place_order or list_cakes by focusing on availability, though it doesn't explicitly name an alternative. The status definitions (bookable/full/closed) add precision.

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 usage: check availability before ordering, and explains that only bookable=true slots can be booked. However, it does not explicitly mention when to use this tool versus alternatives like get_shop_info or list_cakes, nor does it state any exclusions. The context is clear but not explicit.

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