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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, and openWorldHint=false, so the safety profile is covered structurally. The description adds substantive scope by saying the response includes retention and failure handling, which tells the agent this is an informational policy lookup rather than a compute call. It stops short of saying whether prices are authoritative, region-specific, or cached, which would be the genuinely additive detail.

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?

One sentence, front-loaded with the verb, and every listed item carries information about returned content. There is no filler, preamble, or redundancy.

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 zero parameters, full annotation coverage, and no output schema, the description's remaining job is to convey what comes back — and it enumerates the five content areas, which is adequate for a static informational tool. Minor gap: it doesn't characterize the shape or freshness of the returned pricing data.

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 no parameter semantics to explain and the baseline of 4 applies. Nothing in the description misleads about inputs.

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 uses a specific verb ("Get") plus an enumerated resource set — product options, prices, output specifications, retention, and failure handling — so an agent knows exactly what this tool surfaces. It does not explicitly name how it differs from siblings like get_singphoto_help or prepare_singing_video, but the enumerated content is distinctive enough in practice.

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 when-to-use or when-not-to-use guidance and no named alternative. "Current" implies calling it before quoting or preparing a job, but that is inference rather than stated guidance.

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