game_center_achievement_localizations_v2_update_instance

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

No annotations are provided, so the description carries the full burden, yet it discloses nothing about what the PATCH modifies, whether it is a partial merge, auth/permission requirements, or reversibility. The only implicit hint is partial-update semantics from the PATCH verb.

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 and front-loaded with the endpoint, which is fine, but the identical PATCH path is duplicated in parentheses for no reason, and the single external reference adds little value.

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?

This is an update tool with a nested JSON:API body, no output schema, and no annotations. Delegating the body shape to an external OpenAPI component the agent may not have access to leaves the definition materially incomplete for correct invocation.

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 shared baseline is 3. The description adds only a pointer to an external OpenAPI schema (GameCenterAchievementLocalizationV2UpdateRequest), which restates what the body parameter's own schema description already says without explaining the JSON:API envelope.

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 the HTTP method and path (PATCH /v2/gameCenterAchievementLocalizations/{id}), which restates what the tool name already encodes. It conveys 'update' via the PATCH verb but provides no meaningful explanation of the operation beyond the URL, and none of the many sibling *_update_instance tools are distinguished.

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, and no mention of alternatives among the many sibling update tools. The agent is given an endpoint but not a reason to select it.

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