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

With no annotations, the description carries the burden; it discloses the ordering constraint before submit and implies overwrite-on-repeat ('when content descriptors change'), which is useful. It does not state whether a call replaces or merges existing answers, what permissions/account state are needed, or what happens if the questionnaire is left incomplete.

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, front-loaded with the action and followed by usage timing; nothing is wasted. The trailing clause 'required before submit' is slightly awkwardly attached, but it still reads clearly.

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 one-optional-param, no-annotation, no-output-schema tool, the description covers purpose and timing but omits how questionnaire answers are conveyed and whether repeat calls overwrite prior answers. Adequate to select the tool, thin for invoking it confidently.

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% for the single optional notification_message parameter, so the schema does the heavy lifting and baseline 3 applies. The description adds no parameter meaning, and notably never connects the 'answers/content descriptors' it claims to set to any input, leaving the input-to-action mapping opaque.

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 app's age rating questionnaire answers') and clarifies that the subject is content descriptors, which separates it from metadata/privacy siblings like set_app_privacy and set_app_store_metadata. It stops short of explaining how the answers are actually supplied, which is the main 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?

Gives explicit timing: 'Use once per app, or when content descriptors change,' and flags the prerequisite ('required before submit'), which routes the agent correctly relative to submit_for_review. No alternative tool is named, so it is not a full when/when-not statement.

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