macro_usa_building_permits

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

注释已声明只读、幂等、非破坏性，描述补充了数据区间（20080220-至今）和返回类型（pandas.DataFrame），这有助于代理理解输出格式和时间范围。未发现与注释矛盾之处。

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?

描述简短但存在冗余：第一行与注解标题完全相同，:return 又重复了报告名称。URL 和返回类型是有效信息，但整体上重复度较高，不够精简。

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?

对于无参数、无输出模式的简单工具，描述已提供数据范围、返回类型和数据源URL，基本足以让代理理解该工具的功能和输出。虽然未给出具体列名或单位，但在该复杂度下已算完整。

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?

输入模式为空，参数数量为0，根据规则基准分为4。描述无需解释参数，且没有多余信息，符合无参数场景的预期。

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?

描述明确指出这是美国营建许可总数报告，并给出了数据区间，资源清晰。虽然没有明确动词（如'获取'），但'报告'暗示了返回数据的功能。与同类工具区分度不足，但名称本身已经提供了具体指标，因此尚可。

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?

未提供任何使用场景或与替代工具的对比。在众多 macro_usa_* 兄弟工具中，没有说明何时使用此工具而非其他（如房屋开工、新屋销售）。仅有描述性内容，隐含用途但缺乏明确的when-to-use指南。

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