appstore_app

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

With no annotations, the description carries full responsibility for behavioral disclosure. It accurately indicates a read operation ('Get details') but does not mention that results may be localized by country/language or that an identifier is required. This is minimal but not misleading.

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 description is a single sentence, front-loaded with the action and object, making it efficient. However, it is arguably too terse to carry the necessary context for a tool with four parameters and no annotations.

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?

With no output schema or annotations, the description should explain more about return contents and identifier requirements. It only says 'details', which is insufficient for an agent to know what data is returned or how to identify the app.

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% (only appId has a description), and the description adds no parameter semantics. It leaves ambiguity about whether id or appId is required and how lang/country defaults affect results, failing to compensate for the schema gap.

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 uses the specific verb 'Get' with the resource 'details of an app from Apple App Store', clearly distinguishing it from siblings like appstore_search (search) and appstore_reviews (reviews). It precisely names the platform and the resource being retrieved.

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 description implies usage when needing app details, but it does not explicitly state when to prefer this over appstore_search or appstore_app siblings. No exclusions, prerequisites, or alternative tool names are mentioned, so guidance is only implicit.

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