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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so safety is covered. The description adds real behavioural context beyond them: the presence of tiered pricing, a requires_confirmation signal, and translated content — all things an agent would otherwise misreport.

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?

Four short sentences with no padding, and the two hard constraints on price reporting are stated up front where they will be read. Only weakness is that output field names like requires_confirmation appear unmarked, which could read as prose rather than a data field.

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?

An output schema exists, so return structure need not be described, and the price-interpretation caveats map onto it. However, with a 0% documented parameter and no pointer to where product_id values come from (presumably offer-search-products), an agent lacking an id has no next step.

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?

There is one required parameter, product_id, and schema description coverage is 0%, so the description would need to compensate — but it never mentions product_id or where a valid id comes from. The parameter is self-evident from its name, which keeps this above a 2, but the description adds nothing.

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 the resource (public product) and enumerates the specific facets it returns: details, description, price interpretation, translations. That is enough to tell it apart in spirit from offer-get-product-price, though it never names the sibling explicitly and omits a leading verb.

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?

"Never treat the lowest tier as universal" and "requires_confirmation means do not give a definitive price" are genuine guidance, but they govern interpretation of results rather than when to choose this tool over offer-get-product-price or offer-search-products. Tool-selection guidance is only implied.

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