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

With no annotations, the description must carry the behavioral burden; it does disclose the read-only, informational nature ('Informational only') and that the content is sourced from the public site. It says nothing about return format or freshness/latency, but the tool is side-effect-free and zero-param, so the remaining risk is low.

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?

Two short sentences with the scope front-loaded and no filler; the enumerated capability areas are the highest-value content and appear early. The word 'Honest' is slightly editorial, but it usefully signals the summary is not marketing copy.

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 zero-parameter, side-effect-free informational tool with no output schema, the description says enough to call it correctly: what domain, what content, and that it is informational. The only missing piece is the boundary against the sibling get_product_info.

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 schema declares zero parameters, so there is nothing for the description to disambiguate; 4 is the baseline for a parameterless tool. The enumerated topics (text-to-video, image-to-video, audio) usefully preview what the response covers.

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 clear resource (Seedance 3.0 capabilities) and enumerates the covered areas (text-to-video, image-to-video, audio), so an agent knows exactly what content comes back. It does not, however, explicitly contrast itself with sibling get_product_info, which could plausibly also describe capabilities.

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?

'Informational only' weakly implies this is a non-action lookup, but the description never states when to call this instead of get_product_info or get_pricing_url. No preconditions or exclusions are given, so the agent must infer routing from tool names alone.

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