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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds the returned payload contents and a (free) price note, but discloses no auth, rate-limit, or workflow behavior beyond that; with annotations carrying the safety burden, a 3 is appropriate.

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?

The core is two front-loaded sentences with no wasted prose. The appended aisa-pricing HTML block is boilerplate noise but is clearly delimited and not part of the semantic content.

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?

Output schema exists so return values needn't be re-explained (though the description does), and the single parameter is well covered. The key omission is the submit/fetch workflow context — an agent needs a task id from post_dataforseo_app_apple_app_info_submit, which is never mentioned.

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 100% and the schema fully documents the 'id' task-identifier (UUID, valid 30 days), so the baseline is 3. The description's reference to an 'app_id parameter specified in the POST request' does not match the actual 'id' task identifier and adds mild confusion rather than meaning.

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 (fetch/provide) and resource (Apple app info results), and enumerates the returned fields (ID, icon, description, reviews count, rating, images). However, it never distinguishes itself from its submit counterpart (post_dataforseo_app_apple_app_info_submit) or the Google variant, and its 'specified in a POST request' phrasing muddies what is actually a results-fetch-by-task-id.

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?

There is no when-to-use guidance, no mention of the two-step submit-then-fetch workflow, and no reference to any sibling or alternative. The agent is left to infer that this retrieves results of a previously submitted task.

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