Get Game Center detail for an app

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

With no annotations, the description carries the full behavioral disclosure burden. It discloses the essential behavior: the tool returns a resource ID that other tools need. However, it does not mention response shape, error cases, authorization, or whether this is strictly read-only, so some operational context is missing.

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 sentences with no filler. The core purpose is front-loaded, and the second sentence adds essential workflow context about why this ID matters. Every word earns its place.

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 simple one-parameter lookup, the description is mostly complete: it identifies the required parameter, the return value (resource ID), and the practical purpose (required by other Game Center tools). It could be more complete by noting the response format or potential absence of a Game Center detail, but these are minor for this simple tool.

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 single parameter, appId, is already described as 'The App Store Connect app ID.' The description only says 'for an app,' which aligns with the schema but adds little beyond it. The baseline of 3 is appropriate because the schema does the work.

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 a specific verb ('Get') and resource ('gameCenterDetail resource ID'), and states it is for an app. It also explicitly distinguishes the tool from siblings by explaining that this ID is required by every other Game Center tool, so there is no ambiguity about what it does or its role in the workflow.

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 clearly implies when to use this tool: before any other Game Center tool, since the returned ID is a prerequisite. It does not explicitly name alternatives or state when not to use it, but the context is strong enough for an agent to select it correctly.

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