browser_deleteCookies

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

无注释，描述承担全部责任。仅说明删除Cookie，但未披露副作用（如影响会话）、是否可逆、是否需要特定权限，以及传递参数时的具体行为。对于破坏性操作，信息不足。

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?

单句描述，简洁且关键行为（不传参删除所有）前置，无冗余内容。虽然简短，但有效传递了核心信息，结构合理。

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?

对于简单删除工具，无输出schema，参数少且schema覆盖完整，描述基本足够。但缺少行为细节（如删除特定cookie的条件），且无注释，整体可接受但非完备。

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覆盖100%，两个参数name和domain都有清晰描述，描述本身未添加额外格式或语义信息。基线为3，因为schema已充分说明参数含义，描述无需补充。

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?

描述明确说明工具用于删除Cookie，并具体说明不传参数时的行为（删除所有），动词和资源清晰。名称也直观，与兄弟工具如browser_getCookies区分明显，但未明确提及与browser_clear等其他清除工具的区别，略降一分。

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?

描述仅说明不传参数的行为，未提供何时使用此工具或何时使用其他替代工具的指导。没有提及使用场景、前提条件或与其他浏览器工具的差异，代理无法据此判断何时应调用此工具而非其他。

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