game_center_leaderboard_set_localizations_get_instance

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

No annotations are provided, so the description carries the full disclosure burden, yet it only flags deprecation. It says nothing about whether the deprecation means removal, permission requirements, or how the include/fields parameters affect the response payload.

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 the deprecation notice is front-loaded, but the path is printed twice verbatim, which is pure waste and no information beyond the first mention.

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?

The schema fully documents the five parameters, so the main gap is the absence of an output schema combined with no description of the returned resource shape or how deprecation affects callers. The description does at least supply the one thing structured data lacks: the deprecated status.

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 every parameter (id, include, three fields_* sparse fieldset filters) is documented in the schema itself. The description adds no parameter meaning beyond that, which is the baseline case for full schema coverage.

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 restates the HTTP path (GET /v1/gameCenterLeaderboardSetLocalizations/{id}) duplicated in parentheses, which conveys that it fetches a single leaderboard-set localization by id. That is essentially a restatement of the tool name rather than a distinct statement of purpose, but the [DEPRECATED] tag adds information an agent would not otherwise have.

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?

The [DEPRECATED] marker is a meaningful 'don't use' signal, but no successor tool or migration path is named, and there is no guidance on when fetching a localization versus using the collection/parent endpoints among the many game_center_leaderboard_set_localizations* siblings.

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