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

Annotations already declare readOnly, idempotent, and non-destructive, so the bar is lower. The description still adds real value by clarifying that the tool performs a pure completeness check and will not apply declarations or fixes, which is exactly the mutation boundary an agent needs to know. It stops short of saying what the check returns.

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 short sentences, front-loaded with the action and followed by the exclusion. No wasted text, though the phrasing 'Read Apple submission completeness' is slightly compressed and could read more explicitly.

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?

There is no output schema, so the description carries the burden of explaining what a 'completeness' result looks like, and it does not. Combined with fully undocumented parameters, an agent knows the intent but not the inputs or the shape of the answer.

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 0% for both appId and releaseId, and the description never mentions either parameter. With two undocumented required identifiers, the description should clarify which submission identifiers are expected but contributes nothing here.

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 names a specific verb ('Read') and resource ('Apple submission completeness'), so an agent can tell this is a validation/inspection operation on a submission. It lacks explicit differentiation from siblings such as get_app or list_releases, relying only on the negative clause about compliance declarations.

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?

The phrase 'Does not apply compliance declarations or fixes' implies a boundary (read-only check, not remediation), but no alternative sibling is named for the fixing step, and no prerequisites or when-to-use context is given. Usage is only inferable.

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