app_store_version_phased_releases_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 discloses almost nothing: no note on required permissions, reversibility, what happens to unspecified fields under PATCH semantics, or side effects on App Store release rollout. Only 'PATCH' hints that this is a mutation.

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 (one sentence), which is appropriate, but the endpoint is duplicated verbatim in the parenthetical '(PATCH /v1/appStoreVersionPhasedReleases/{id})', which is pure noise. Front-loading is fine but the duplication costs it.

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?

This is a mutation tool with a nested, opaque body object (additionalProperties with no field detail), no annotations, and no output schema. The description does not fill any of these gaps, leaving the agent without enough context to safely invoke the update.

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 the baseline is 3. The description points to components.schemas.AppStoreVersionPhasedReleaseUpdateRequest for the JSON:API envelope, but the input schema already states the same schema name for 'body', so this is largely repeated rather than added meaning.

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 maps the tool to 'PATCH /v1/appStoreVersionPhasedReleases/{id}', so an agent can infer an update operation on a phased release resource. However, it adds essentially nothing beyond what the tool name already encodes and does not distinguish the operation from the sibling create/delete phased-release tools. Purpose is identifiable but bare.

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 statement of when to use this tool versus alternatives (e.g., create/delete phased releases, or get the phased release), no prerequisites (the phased release must presumably exist and be in an updatable state), and no conditions. Only the endpoint is provided.

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