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

With only openWorldHint provided, the description carries most of the behavioral burden. It discloses that this is a query operation ('按企业查询...周期变化') and enumerates the exact certification indicators and types covered. It does not mention side effects or data availability caveats, but the query nature is clear and there is no contradiction with annotations.

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 front-loaded with purpose, then provides exclusions, a detailed indicator list, and typical questions in a structured format. The indicator list is long but relevant; minor redundancy between '不用于按资质标签批量筛选' and '按园区/产业链批量筛企业名单' prevents a perfect score.

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?

For a complex certification-query tool with only two parameters, complete schema coverage, an output schema, and openWorldHint, the description is thorough: it defines scope, lists supported indicators, gives explicit non-scope cases, and provides concrete example queries. It is sufficient for an agent to select and invoke the tool correctly.

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 coverage is 100% and both parameters already have descriptive examples. The description reinforces parameter usage through typical questions like '中国比亚迪股份有限公司是否通过最新环保合规审查', but it does not add meaningful semantic constraints beyond what the schema already provides.

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's function: '按企业查询资质认证方面的周期变化', with specific object domains such as 高新/专精特新资质, 体系/等保认证, and 建筑资质等级. It also distinguishes itself from sibling batch-filter or financial-license tools by explicitly saying '不用于按资质标签批量筛选企业名单，也不用于金融牌照查询'.

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?

The description gives clear when-to-use context ('基于具体企业名称') and explicit exclusions ('不用于按资质标签批量筛选企业名单' and '按园区/产业链批量筛企业名单'). However, it does not name alternative sibling tools, so the guidance stops short of fully explicit alternatives.

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