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

No annotations are provided, so the description carries the full behavioral burden. It usefully discloses billing behavior: charges are confirmed only on business success, and content violations, model timeouts, or generation failures trigger an automatic full refund. It does not cover auth, rate limits, or whether generated content is stored, so it falls short of a 5.

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 two tight sentences: the deliverable list is front-loaded, followed immediately by the billing and refund terms. Every sentence earns its place with no repetition or filler.

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?

With no output schema, the description usefully enumerates the returned artifacts and explains the billing/refund safeguards. It still leaves a minor gap around whether assets are returned inline or stored, so it is strong but not fully complete.

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 documents topic, duration, platform, and requestId thoroughly. The description adds no parameter-level semantics beyond the deliverable list, making the baseline 3 appropriate.

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 names a specific deliverable set: three opening-hook versions, a storyboard table, and spoken copy that is ready to shoot. It clearly identifies the generated assets, but it does not distinguish this tool from siblings such as copywriter or codegen.

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?

The phrase '可直接拍摄' implies the tool is for producing shoot-ready short-video scripts, but there is no explicit when-to-use guidance, no exclusions, and no comparison to sibling tools such as copywriter.

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