set_status

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

无任何注释，描述须独立承担行为披露责任。它说明了推送状态文字的行为，并解释了自动刷新机制导致无需再次调用，提供了基本行为上下文。但未说明消息的显示时长、是否覆盖旧消息、失败处理等细节，行为透明度有限。

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?

描述仅两句话：第一句明确动作并给出示例，第二句补充使用时机和自动刷新逻辑。内容紧凑、无冗余，关键信息前置，结构合理，是一份高效规范。

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（单参数，无输出模式），描述涵盖了用途、时机和副作用（自动刷新的自解释）。虽然没有详细的行为细节（如消息清除方式），但鉴于工具的简单性，描述已足够让代理正确调用。

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?

输入模式中message参数仅有标题“Message”，无描述，schema描述覆盖率为0%。描述通过示例「正在修改 fig_xxx.py 并重跑…」暗示了参数应包含的文本内容，这为代理提供了有用的语义补充，但未明确参数格式、长度限制或是否必须为字符串，补偿不完整。

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?

描述明确说明工具是“向批注页面顶栏推送一条状态文字”，并给出具体示例「正在修改 fig_xxx.py 并重跑…」。动词和资源明确，与兄弟工具（open_svg、wait_for_annotations、get_annotations）功能截然不同，区分度高。

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?

描述给出了明确的使用时机：“修改开始前调用一次”，以及何时不使用：“改完文件后页面会因文件变化自动刷新,无需再调用本工具通知”。这提供了清晰的when和when-not，但没有提及替代工具（尽管兄弟工具功能不同，不需要排除）。

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