baidu_face_compare

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

没有提供任何行为信息，如返回相似度分数、是否需要检测到人脸、图像要求等，且没有注释来补充。

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?

内容非常简短，包含类别和定价，但缺乏核心功能描述，过于省略，没有有效传达工具用途。

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?

对于一个人脸比较工具，没有输出schema，且描述完全未提及输出结果、行为或限制，无法帮助智能体理解其完整功能。

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?

参数schema覆盖100%，描述了图片URL，但描述没有在schema基础上增加额外含义，只提供了无关的定价信息。

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?

描述中包含类别标签[Face]和中文名称'人脸对比'，暗示了比较人脸的功能，但未明确说明是比对两张人脸图像，且与兄弟工具如baidu_face_detect没有区分。

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?

描述只提供了定价信息，没有说明何时使用该工具、前提条件或替代方案，缺乏使用指导。

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