list_app_store_version_localizations

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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered by structured data. The description adds useful context that the result contains descriptions, what's-new text and keywords per locale — effectively a partial return-shape hint in the absence of an output schema — but says nothing about pagination, ordering, or empty-locale behavior.

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?

One sentence, front-loaded with the verb and resource, with the field enumeration packed into a parenthetical. Nothing is padded or redundant.

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?

For a simple one-parameter read tool with full schema coverage and complete annotations, the description covers purpose and roughly what comes back. The only shortfall is the lack of guidance on how to obtain a versionId and what to do with results (feed them to update_app_description etc.).

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 versionId parameter is documented as 'The app store version ID'; the description adds no format, source, or validation detail beyond that. With one fully-documented parameter, the 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 (List) and a precise resource (localizations for an app store version), and the parenthetical enumerates the field types returned. This lets an agent distinguish it from the sibling updaters (update_app_description, update_whats_new, update_keywords) and from list_iap_localizations/list_subscription_localizations, though it never names those alternatives explicitly.

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?

There is no when-to-use or when-not-to-use guidance, no mention of prerequisites (e.g., that a versionId must come from list_app_versions), and no routing to the update_* tools that modify the very fields this tool lists. The use case is only implied by the resource name.

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