List App Store version localizations

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

The readOnlyHint=true annotation already establishes this is a safe read, and the description adds the useful scope note that results are per-locale and lists the returned metadata fields. It says nothing about pagination, locale coverage limits, or the openWorldHint implication that data may change between calls.

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 compact sentences with no filler, and the field enumeration comes before the id-provenance hint so the agent gets the payoff first.

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 no output schema, the description compensates by naming the returned fields, so the agent knows the shape of the response. What remains unstated is pagination behavior and whether all locales are always present, which for an openWorldHint list tool would be worth one more sentence.

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 parameter is fully documented in the schema at 100% coverage, so the schema baseline already applies. The description earns credit above baseline by explaining the provenance of versionId, which the schema only labels as 'appStoreVersion id'.

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?

A specific verb plus resource ('List the per-locale App Store metadata of a version') followed by an enumeration of the exact fields returned. The agent can distinguish this from siblings such as asc_app_overview, which the description explicitly positions as the source of version ids.

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 tells the agent where version ids come from ('Get version ids from asc_app_overview'), which is the key precondition for calling it. What is missing is any statement of when not to use it or which sibling covers adjacent needs, so it stays below a 5.

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