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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered; the description adds that results come from public store-map data, that market only selects a display locale, and that a geocoded viewport is mandatory. It adds meaningful behavioral context beyond the annotations without contradicting them.

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 sentences, purpose front-loaded, zero filler. Each sentence carries a distinct constraint (viewport scope, market semantics, geocoding requirement).

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 an output schema present the description need not explain return values, and annotations carry the safety profile. It covers the key gotchas (geocoded viewport, market-is-locale) but omits any mention of the related Gucci store siblings, leaving a small gap.

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%, so the schema already documents every parameter, including that market 'controls localization only, not geographic filtering.' The description restates the market semantics and clarifies the viewport lats/longs add little beyond the schema, so baseline 3 applies.

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+resource ('Search Gucci's public store-map features') and scopes it to a viewport, which lets an agent distinguish it from a single-store lookup. It does not explicitly differentiate from the closely-named siblings gucci_store and gucci_stores, so it stops short of a 5.

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 gives real usage constraints: supply a geocoded viewport and note that free-text location names are not resolved, which tells the agent to geocode first. It never names the alternative tool (e.g. a geocoding sibling) to route to, so it lacks an explicit when-to-use alternative.

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