list_exposure_product_puc

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered structurally. The description adds nothing beyond that — no note on whether the list is static or live, cacheable, or how large it is — so it contributes no behavioral context of its own.

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 front-loaded sentence with no filler or redundancy. Its brevity is efficient rather than padded, though it is arguably too terse to be useful on its own.

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 params and an output schema present, the description does not need to explain return values, so the remaining burden is small. Still, for a tool sitting among several overlapping category/PUC listings, it omits the one thing an agent needs: how it differs from get_exposure_ccd_puc and the other list_* taxonomy tools.

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 disambiguate; baseline 4 applies. No parameter guidance is needed here.

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 verb+resource ('List product use categories'), but 'PUC' is left unexpanded and there is no differentiation from sibling category-listing tools such as list_exposure_functional_use_categories or get_exposure_ccd_puc. An agent can tell it lists a taxonomy, but not which taxonomy relative to its neighbors.

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 description gives no when-to-use guidance, no prerequisites, and no mention of alternatives. It is only inferable that this exists to enumerate valid PUC values, and nothing in the text confirms or denies that.

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