V2EX

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

No annotations are provided, and the description discloses no behavioral traits. It does not mention whether the tool performs caching, requires authentication, has rate limits, or how it handles errors. The only hint comes from the 'noCache' parameter, but the description itself offers no transparency.

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 extremely concise, consisting of a single short phrase. While brevity can be good, it sacrifices valuable information. A few more sentences clarifying the return format or parameter effects would improve it without excessive length.

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 no annotations, no output schema, and minimal parameter documentation, the description is insufficient for an agent to use the tool confidently. Important details like the response structure (list of hot items), data fields, and caching behavior are missing. The low complexity does not excuse this lack of completeness.

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 does not explain the two parameters ('limit', 'noCache'). The description adds no meaning beyond the schema, leaving the agent to infer parameter semantics. This is inadequate for effective tool usage.

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 retrieves V2EX hot list data ('获取V2EX热榜数据'). It specifies the verb ('get') and resource ('V2EX hot list'), and distinguishes it from siblings which target other platforms. However, it lacks detail on the exact structure of the returned data, such as whether it includes titles, links, or scores.

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 guidance is provided on when to use this tool vs alternatives. The description does not mention any prerequisites, limitations, or hints about appropriate contexts (e.g., daily trend analysis vs. specific post lookups). The tool could be assumed to be for general V2EX trending data, but no explicit guidance exists.

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