game_center_leaderboard_set_localizations_v2_create_instance

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

No annotations are provided, so the description carries the full behavioral burden, yet it only reveals that this is a body-carrying POST mutation. It says nothing about required auth, required relationships (e.g. the parent leaderboard set version), side effects, or validation rules. The lone positive is signaling the operation is a create via POST.

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 text is short but structurally wasteful: the same route is printed twice, once bare and once in parentheses. No information is front-loaded beyond the path, and the duplicated segment earns nothing.

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 operation whose body is a nested JSON:API envelope, with no annotations and no output schema, the description should explain the envelope requirements and creation prerequisites. Instead it defers entirely to the external OpenAPI spec, leaving the agent without the context needed to construct a valid request.

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% (the single body parameter is documented in the schema), so the baseline is 3. The description's pointer to components.schemas.GameCenterLeaderboardSetLocalizationV2CreateRequest duplicates the schema's own description and adds no new meaning about the JSON:API envelope contents.

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 only restates the HTTP route (POST /v2/gameCenterLeaderboardSetLocalizations) and repeats it verbatim in parentheses. It never says in plain language that it creates a localization record for a Game Center leaderboard set; the meaning is carried entirely by the tool name. This is essentially a tautology of the name/route.

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 guidance on when to use this tool versus siblings such as game_center_leaderboard_set_localizations_v2_update_instance, _v2_delete_instance, or the v1 game_center_leaderboard_set_localizations_create_instance. No prerequisites, no exclusions, no context are given.

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