获取收藏表情包

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

注解已声明readOnlyHint=true和destructiveHint=false，描述与其一致，无矛盾。描述说明了返回URL列表，但未提及可能的错误或限制。由于注解覆盖了安全特性，描述添加的价值有限，但提供了基本行为信息。

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?

描述为单句，简洁且直接，无冗余内容。虽未包含使用场景细节，但整体结构清晰，适合简短工具。

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?

工具简单（一个可选参数），注解提供了安全信息，描述说明了返回内容和用途。没有输出模式，但描述已指出返回URL列表，基本完整。缺少对返回格式或分页的说明，但考虑其简单性，评为4分。

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?

输入模式对参数count有完整描述（获取数量，默认48），覆盖率100%。描述本身未额外解释参数，但模式已充分说明，因此维持基线3分。

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?

描述明确指出获取机器人QQ收藏的表情包图片URL列表，动词和资源清晰。虽未显式与兄弟工具区分，但兄弟列表中无类似获取收藏表情的工具，因此自然区分。评为4分，因为缺少对使用场景的进一步说明。

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?

描述未提供任何关于何时使用此工具或何时不使用此工具的指导，也没有提及替代工具。仅说明用途，缺乏上下文和排除条件。

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