update_app_store_version_localization

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

No annotations are provided, so the description carries the full burden. It usefully discloses upsert semantics ('Creates the locale if it does not exist yet') and signals a mutation ('Writes.'), but leaves critical behavior unexplained: whether omitted fields are cleared or preserved, whether the operation is reversible, and any auth requirements.

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 tight sentences with the mutation and target resource front-loaded and the field list following. 'Writes.' is terse but efficient; 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?

For an 8-parameter mutation with no annotations, no output schema, and 50% schema coverage, the description is adequate but incomplete. It should state whether this is a partial or full replacement and what the response returns, since nothing else in the definition covers those gaps.

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 coverage is only 50%, and the description compensates by naming the settable content fields (description, keywords, promotional text, what's new, support and marketing URL), most of which are the undocumented ones in the schema. It adds real meaning beyond the structured fields, though it omits char limits and the first-version whats_new restriction.

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 and resource ('Set the per-locale product page text of an App Store version') and enumerates the exact fields it controls. It clearly differs from app-level siblings like update_app_info_localization, though it never names a sibling 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?

No when-to-use guidance, prerequisites, or alternatives are given. An agent is told what the tool writes but not when it should be chosen over update_app_info_localization or update_app_store_version, nor what permissions are needed.

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