添加自选基金

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

注解已声明非只读、非破坏性且幂等，描述额外补充了'需要有效登录态'和公募/私募代码前缀规则，这些是注解未覆盖且对调用成功至关重要的行为前提。虽未提及重复添加的具体表现，但幂等性已由注解覆盖，整体透明。

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?

两句话完成核心操作声明、前置条件和代码规则说明，无冗余内容，信息密度高且重点前置。

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?

工具为单参数简单操作，且存在输出schema，描述已覆盖操作目的、登录前提和代码格式要求，对于正确调用没有缺失的必要信息。

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?

参数schema已100%覆盖symbol的含义并给出了示例，描述中的代码前缀规则与schema示例一致，未提供超越schema的新信息。依据高覆盖率基线，评分为3。

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?

描述以动词'加入'明确说明操作对象是基金和自选基金默认分组，与兄弟工具add_watchlist_stock、add_watchlist_cube形成清晰区分。同时补充了登录态和代码前缀规则，无歧义。

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?

描述隐含了添加基金时应使用此工具，且通过'需要有效登录态'给出使用前提，但未明确说明与add_watchlist_stock等替代工具的选用条件或排除场景。仍属隐含用法，缺少显式指引。

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