什么值得买

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

With no annotations, the description must disclose behavioral traits. It only states it fetches a hot list, omitting details like caching behavior (despite the noCache parameter), rate limits, or whether it is read-only. The agent has insufficient behavioral context.

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 very concise (single phrase), which is good for brevity, but it may be too short to be useful. The structure is front-loaded, but the lack of detail reduces its effectiveness.

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 complexity of many sibling tools and the absence of an output schema or annotations, the description is incomplete. It does not help the agent understand the expected return format or differentiate this tool from similar ones.

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%, and the tool description adds no meaning to the parameters 'limit' and 'noCache' beyond their names. The parameter names are somewhat self-explanatory, but the description fails to clarify their impact (e.g., what 'noCache' disables exactly).

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 verb '获取' (get) and the resource '什么值得买热榜' (hot list of what's worth buying), making the tool's purpose straightforward. However, it does not differentiate from many sibling tools that also fetch hot lists from various platforms.

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?

No usage guidelines are provided. The description does not specify when to use this tool versus the numerous sibling tools for other platforms, nor does it mention any prerequisites or context.

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