game_center_achievements_localizations_get_to_many_related

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

With no annotations, the description carries the full behavioral burden. It discloses only the deprecation status; it says nothing about read-only semantics, pagination behavior (despite a 'limit' param), auth requirements, or the related/relationship variant difference. The single deprecation marker is useful but far short of what an unannotated tool needs.

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 description is short and front-loads the deprecation warning, which is good. However, the same path is duplicated verbatim inside the parentheses ('GET /v1/... (GET /v1/...)'), which is pure noise rather than earned content.

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 six-parameter, unannotated tool with no output schema, the description covers only the endpoint and deprecation. It omits the related-vs-relationship distinction, pagination/return behavior, and any hint about what localizations are returned, leaving meaningful gaps for an agent to call it correctly.

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% — all six parameters, including id, limit, include, and the three fields_* filters, are documented in the schema itself. The description adds no parameter meaning beyond that, 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 gives an HTTP verb and path (GET /v1/gameCenterAchievements/{id}/localizations), so the resource being read is identifiable, but it largely restates the tool name rather than explaining the operation in plain terms. It does not distinguish this 'get_to_many_related' variant from the sibling 'game_center_achievements_localizations_get_to_many_relationship', which the agent must disambiguate.

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]' tag is an implied when-not signal — an agent can infer it should avoid this tool — but no replacement or alternative tool is named, so the agent is not routed to the correct sibling. This is implied usage guidance rather than explicit direction.

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