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

Beyond the readOnlyHint/openWorldHint annotations, the description discloses the US storefront scope and that PDP fields are opportunistically enriched and omitted when unavailable, warning the agent about partial results. It doesn't cover auth or rate-limit behavior, so not a 5.

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?

Three tight sentences, front-loaded with verb+resource+key, followed by return fields, enrichment caveats, and input provenance. Nothing is wasteful or buried.

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-value explanation is not required, yet the description still names key fields. With annotations covering safety and the description covering region, enrichment gaps, and input source, an agent has everything needed to call it correctly.

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?

Schema description coverage is 100% and the single style_code parameter is already documented in the schema, so baseline is 3. The description adds marginal value by naming the source fields (gucci_search/gucci_category), mostly repeating what the schema already says.

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 (Get) and resource (one Gucci product's detail), keyed by style code, and enumerates the returned fields (name, price, images, stock, PDP attributes). An agent can immediately distinguish this detail-lookup tool from the sibling search/category tools.

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?

It routes the agent by stating style_code comes from gucci_search or gucci_category, which implies the retrieval path that feeds this tool. However, it stops short of an explicit when-to-use/when-not statement or naming of alternative detail sources.

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