app_store_versions_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 behavioral burden, and it discharges none of it. It does not state whether this is a partial or full update, what permissions are required, which states permit modification (e.g., only versions in editable state), or what happens to unspecified fields.

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 but wasteful: the same route string is repeated verbatim in parentheses, providing zero additional information. Two of the three clauses are redundant, leaving a single useful pointer to the request schema.

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 endpoint with a nested JSON:API body, no annotations, and no output schema, the description is inadequate. The actual updateable field set is deferred entirely to an external OpenAPI document, so an agent cannot construct a correct body from this definition alone.

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% (both id and body are documented in the schema), so the baseline is 3. The description only points at components.schemas.AppStoreVersionUpdateRequest for the body shape rather than explaining any field meaning, adding little beyond structured data.

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 and its HTTP route: 'PATCH /v1/appStoreVersions/{id}'. It does not say in semantic terms what an App Store version is or which attributes can be changed (e.g., release type, version string, build attachment). An agent learns only what the name already implied.

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?

No when-to-use guidance, no prerequisites, and no alternatives are named despite siblings like app_store_versions_create_instance, app_store_versions_get_instance and app_store_versions_delete_instance existing. The endpoint verb is the only contextual signal.

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