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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the bar is lower, yet the description adds substantial context: login is required, the deletion is irreversible, it only affects the reuse layer (not submitted forms), and includeFiles=true triggers file-reference deletion with its own confirmation and a re-upload requirement. This is meaningfully beyond what the annotations encode.

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?

Bracketed labels (【需要登录】【组合链】) front-load the login requirement and the ordering, and every sentence carries a distinct constraint. It is dense and information-rich, though slightly packed into one paragraph rather than cleanly separated lines.

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 destructive, 2-param mutation tool with no output schema, the description covers auth, irreversibility, scope boundaries, the confirmation workflow, and the file-deletion side effect. Nothing an agent needs to invoke it safely is missing.

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%, so the schema already documents both keys (source is get_my_signup_profile items[].key) and includeFiles (default false, confirm before true). The description restates the includeFiles default and confirmation rather than adding syntax or edge-case meaning, so it earns the baseline 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?

States a specific verb (删除/忘掉) and resource (跨表单报名复用资料), and immediately bounds the scope: '仅删复用层，不动已提交报名单'. This cleanly separates it from siblings like update_my_signup_profile and cancel_my_activity_signup, so an agent can distinguish it without opening any schema.

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?

Gives an explicit workflow chain ('get_my_signup_profile→逐项说明要删的key/题面并取得用户确认→本工具') and a clear exclusion (answers the organizer already received must be changed with the organizer). Both when-to-use and when-not-to-use are stated.

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