game_center_leaderboard_localizations_v2_create_instance

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

Annotations are absent, so the description carries the full disclosure burden and supplies essentially none: no auth/permission requirements, no side effects, no note that this mutates persistent state, no idempotency or response behavior. Only the bare POST verb hints at a write.

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?

It is short but wastes roughly half its length by repeating the identical route inside parentheses, and the remaining sentence is a pointer rather than information. Front-loaded, but the payload is redundant rather than informative.

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 mutation tool with no annotations and no output schema, an agent still cannot construct a call: the body is a free-form object whose real shape lives only in an external OpenAPI component the description defers to. Nothing about required attributes or relationships is conveyed.

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%, so the baseline is 3. The description adds only the name of the OpenAPI request component (GameCenterLeaderboardLocalizationV2CreateRequest), which the schema already cites, so it contributes no new meaning about the free-form JSON:API body.

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 is a restatement of the HTTP route and its own parenthetical duplicate, not a statement of purpose. An agent can infer 'create a game center leaderboard localization v2' only by decoding the POST path, and nothing distinguishes it from the many sibling *_create_instance and *_v2_create_instance tools.

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?

No when-to-use, when-not-to-use, or alternative is given. The POST verb weakly implies a create operation, but the description never says what must exist first (a leaderboard version), when to prefer v2 over the v1 create_instance sibling, or what the tool returns.

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