game_center_achievement_versions_v2_create_instance

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

With no annotations, the description carries the full behavioral burden, and it only discloses the HTTP verb and that the body is a JSON:API envelope. It says nothing about authentication, side effects, or what a successful call 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?

It is short and front-loaded, but wastes space by duplicating the identical route string twice in parentheses ('POST /v2/gameCenterAchievementVersions (POST /v2/gameCenterAchievementVersions)'). That redundancy detracts from otherwise efficient sizing.

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 create tool with no annotations, no output schema, and a nested JSON:API body object, the description is too thin. It does not describe required body fields, auth needs, or the response envelope, leaving the agent to consult external OpenAPI docs.

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 body parameter is already documented as referencing components.schemas.GameCenterAchievementVersionV2CreateRequest. The description merely repeats that pointer without adding field-level meaning, so the baseline of 3 applies.

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 essentially a restatement of the tool name and HTTP route: 'POST /v2/gameCenterAchievementVersions'. It conveys that this is a create operation on the gameCenterAchievementVersions resource, but offers no plain-language statement of what creating an achievement version actually accomplishes or how it differs from siblings like game_center_achievement_versions_v2_get_instance.

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 prerequisites (e.g., an existing achievement), and no mention of alternatives. An agent must infer usage entirely from the route path.

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