game_center_leaderboard_set_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. It discloses only the HTTP verb PATCH (implying a partial update) and points to an external OpenAPI component for the body envelope, but says nothing about required permissions, reversibility of the change, whether unspecified fields are preserved or cleared, or rate limits.

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 a single, short sentence, which is appropriately sized, but the path is duplicated verbatim in parentheses ('PATCH /v2/... (PATCH /v2/...)'), which is pure waste and suggests the text was auto-generated without editing.

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 a nested free-form body object, no annotations, and no output schema, the description is thin. It defers the entire body shape to an OpenAPI component that is not embedded in the tool definition, leaving the agent without actionable field-level detail for a required write payload.

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% (both id and body are documented in the schema), so baseline is 3. The description's reference to components.schemas.GameCenterLeaderboardSetLocalizationV2UpdateRequest adds only a marginal pointer beyond what the body property description already states, and it does not enumerate or clarify any body fields.

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 gives an HTTP method and resource path (PATCH /v2/gameCenterLeaderboardSetLocalizations/{id}), which tells an agent the operation targets a leaderboard-set-localization record, but it is essentially a restatement of the endpoint rather than a stated business purpose. It never says in plain terms that it updates an existing localization's fields, and offers no differentiation from siblings like game_center_leaderboard_set_localizations_v2_create_instance or the v2_delete_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 guidance on when to use this tool versus alternatives, no prerequisites (e.g., that an id must come from a prior get/collection call), and no indication of when the v2 update is preferred over other localization tools. The only implied usage is derived from the method name PATCH.

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