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

With no annotations, the description carries the full behavioral burden, and it does disclose the most important trait: this call is a pure read of informational content that performs no generation or other side effect. It omits auth requirements, rate limits, or caching behavior, but for a zero-parameter read tool those are minor.

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?

A single sentence with the payload front-loaded and the parenthetical caveat placed at the end. Every clause earns its place; nothing is repeated or padded.

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?

No output schema exists, so the description is the only signal about return content, and "public product information" stays fairly generic about which fields come back. For a no-parameter informational tool this is nearly sufficient, with only the shape of the response left to discover.

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?

The tool takes zero parameters, so there is nothing for the description to clarify beyond what the schema provides. Baseline 4 applies; the described scope (public product info for a named product) is consistent with an argument-free call.

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 ("Return") and resource ("public product information for Seedance 3.0 at seedance30.com"), plus an explicit scope marker that it is informational only. It does not differentiate itself from the siblings get_pricing_url and list_capabilities, which overlap in the same informational space.

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 exclusion "does not generate video" gives a useful guardrail but is not aimed at any available alternative tool. There is no guidance on when to prefer this over get_pricing_url or list_capabilities, leaving the choice to inference.

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