app_store_version_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 burden of behavioral disclosure, and it discloses nothing. It does not mention authentication requirements, pagination, how the include/limit/fields parameters affect the response, or that this is a read-only operation. It is purely an endpoint echo.

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 very short, but it wastes what little space it has by duplicating the same path twice in parentheses. It is front-loaded only in the trivial sense that there is nothing else. No bloat, but also no 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?

For a get-instance tool with a rich 11-parameter schema and no output schema, the description should clarify what the resource represents and how include/limit/fields shape the response. Instead it provides only the raw path, leaving the agent with no context beyond the schema.

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% across all 11 parameters (id, include, limit_* and fields_*), so the schema fully documents each parameter's meaning. The description adds no parameter information, but per the baseline for high coverage, a 3 is appropriate since the schema does the heavy lifting.

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 a restatement of the tool name as a URL template: 'GET /v1/appStoreVersionLocalizations/{id}'. It conveys only that it's a GET on a single resource by id, without explaining what an appStoreVersionLocalization is or how it differs from siblings like app_store_version_localizations_update_instance or the get_to_many_related variants. This is tautological rather than a meaningful purpose statement.

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. The single required 'id' parameter implies it fetches one specific resource, but nothing states when to reach for this versus a collection or relationship endpoint. No exclusions or context are offered.

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