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

Annotations declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, and destructiveHint=false, covering the safety profile. However, the description adds nothing: it does not disclose that this is likely an asynchronous task requiring a webhook (implied by callback_id), nor expected processing behavior. With annotations present, the bar is lower, but the description contributes zero additional behavioral context.

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 a single four-character phrase with no front-loaded explanation or structure. Brevity here reflects under-specification rather than earned conciseness, since essential information is entirely absent.

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 4-parameter, presumably asynchronous video translation task with no output schema and no annotations explaining the workflow, the description is completely inadequate. It fails to explain the required inputs, the callback/webhook mechanism, or expected output, leaving the agent unable to call the tool correctly.

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 only 50% – video_url and workspace_id have no schema descriptions, and target_lang's description is just "目标语言". The tool description does not compensate for any of these gaps, merely duplicating the schema description "视频翻译任务" in spirit without clarifying parameter roles.

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 description "视频翻译" simply restates the tool name and adds no verb+resource specificity beyond what the name already conveys. It does not distinguish this tool from siblings like video_subtitle or video_generate, so an agent learns nothing new.

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?

There is no guidance on when to use this tool versus alternatives such as video_subtitle (which presumably also handles language), nor any mention of prerequisites or input constraints. The description offers no usage context at all.

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