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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety profile. The description adds that the listing is US-only, that it returns every location when unfiltered, and what each entry includes, which is useful scope context beyond annotations; auth and rate limits are not mentioned.

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 sentences, front-loaded with the resource and geographic scope, then the optional filter behavior. Every sentence earns its place and there is no filler.

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 for the returned location fields, and annotations cover read-only/open-world behavior. The description supplies the needed purpose, US scope, and parameter behavior, so nothing critical is missing for correct invocation.

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 single optional department parameter is fully documented in the schema, including case-insensitive substring matching, examples, and omit behavior. The description restates the filter/omit choice but adds no syntax or format detail beyond the 100%-covered schema, so the baseline 3 is appropriate.

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 states what the tool returns — Gucci's full US store-locator listing — and enumerates the included fields, so the resource is clear. It does not explicitly distinguish this tool from sibling gucci_store or gucci_store_search, which leaves some routing ambiguity.

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 explains how to use the optional department filter (include to filter, omit for every store), which is useful parameter-level guidance. However, it never states when to choose this full listing over gucci_store_search or gucci_store, so usage is implied rather than explicit.

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