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

With annotations provided, the bar for adding context is lower, but the description adds almost nothing beyond what annotations already cover. It does not explain what 'analysis' entails, what the output is, or any side effects. Annotations indicate a non-read-only, open-world operation, but the description does not elaborate.

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?

The description is extremely brief, consisting of only a title-like phrase. While concise, it lacks front-loaded useful information and does not earn its place by adding value beyond the tool name.

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 tool that performs analysis and generates a prompt, the description is severely lacking. It does not explain what the analysis produces, how the prompt is used, or any dependencies. Given the absence of an output schema, the description should compensate, but it does not.

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 description coverage is 100%, so the schema already fully documents the three parameters (video_url, clip_start, clip_end) including constraints. The description provides no additional parameter information, which is acceptable given the high schema coverage.

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?

The name and description indicate a video cloning analysis capability (视频复刻 — 分析). However, the description is extremely short and lacks a clear verb+resource structure that distinguishes it from sibling tools like ad_clone_generate or video_analyze. The purpose is implied but not explicitly stated.

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?

No guidance is provided on when to use this tool versus alternatives such as ad_clone_generate or video_analyze. The description offers no context, prerequisites, or exclusions.

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