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

在没有注释的情况下，描述主动披露了清空现有内容这一行为特征，但对错误处理或返回值未提及。

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?

一句话说明核心功能，无冗余信息，关键行为前置。

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?

作为简单操作工具，描述基本完整（动作+行为），但缺少返回值说明和错误处理上下文。

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已覆盖所有参数并给出描述，描述未额外增加参数层面的语义，仅泛化了清空行为。

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?

明确的动词+资源（填入文本到输入框），并附带副作用描述（会先清空内容），与兄弟工具（如click、hover）明显区分。

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?

描述隐含了用于输入框的场景，但没有明确的使用时机、排除条件或替代工具（如click后输入）。

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