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

Annotations only declare idempotentHint=true, so the description carries most of the burden and delivers: it discloses that no model is started and no task credits are consumed, and warns that materials become frozen once the task begins — relevant side-effect information. It does not explain what happens on verification failure (error vs. partial bind) or the return shape, leaving a small gap.

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?

Three clauses, front-loaded with the action and verification scope, then the side-effect exclusions, then the state constraints. No filler; every clause conveys decision-relevant information.

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?

The description covers purpose, side effects, and state transitions well, which offsets the absence of an output schema. However, with 0% parameter documentation and no explanation of the failure/verification-result behavior, an agent still lacks enough to call it confidently with correct identifiers.

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 0% for two required parameters, so the description must compensate and largely does not. The phrase '同一任务上传的文件' hints that task_id scopes a task and upload_id identifies the upload, but neither parameter is named, typed, or given format/relationship guidance (e.g., must upload_id belong to task_id).

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 (核对/绑定 - verify and bind) applied to a concrete resource (uploaded files for a task), and explicitly contrasts with the sibling start_research_task by declaring '不启动模型' (does not start the model). An agent can distinguish it from the other research tools without seeing their schemas.

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 a clear precondition ('上传未成功不能启动' - cannot start if upload failed) and a state constraint ('任务开始后材料冻结' - materials freeze after the task starts), which implicitly frames this as the step before start_research_task. It does not name the sibling tool explicitly or state when NOT to call it, keeping it just short of a 5.

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