apple_update_age_rating

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

No annotations exist. The description only states the operation type but fails to disclose whether the update is partial or full, required permissions, side effects (e.g., overwriting fields), or error states.

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?

Excessively short (3 words). While concise, it omits essential context such as the target audience, expected input format, or return value. This under-specification harms usability, not conciseness.

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?

Given 11 parameters, no output schema, and no annotations, the description is grossly incomplete. It lacks information about how to obtain the required ageRatingId, the effect of optional fields, and any confirmation or error response.

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?

With only 9% schema description coverage and no parameter details in the tool description, most of the 11 parameters lack explanation. The description adds no value beyond the schema's type/enum definitions, leaving agents to guess the meaning of fields like 'alcoholTobaccoOrDrugUseOrReferences'.

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 'Update age rating declaration' clearly states it modifies an age rating. It distinguishes from sibling tool apple_get_age_rating (read vs write). However, it does not specify which fields or scope of update, leaving some 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?

No guidance on when to use this tool versus alternatives (e.g., apple_get_age_rating). No prerequisites or context provided, such as the need for an existing age rating declaration or that the ageRatingId is obtained from another tool.

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