app_preview_sets_create_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. All it discloses is the HTTP method, which merely implies a mutation; it says nothing about required permissions, whether creation is idempotent, side effects, or error behavior for a write endpoint with an opaque nested body.

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 front-loaded, but the parenthetical repeats the identical path verbatim with zero added information, and the sentence ends in a reference to external documentation that is already present in the 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 create endpoint with a nested, opaque request body, no output schema and no annotations, the description omits nearly everything an agent needs: the shape/required fields of AppPreviewSetCreateRequest, what resource relationships must be supplied, and what a successful response contains.

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% and the only parameter is a free-form body whose schema entry already points to components.schemas.AppPreviewSetCreateRequest. The description repeats that same pointer and adds no field-level meaning, so it neither compensates for nor improves on the schema. Baseline 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 is essentially the tool name restated as an HTTP call: 'POST /v1/appPreviewSets'. It conveys 'create an app preview set' but says nothing about what a preview set is, what it belongs to, or how it differs from siblings like app_previews_create_instance or app_screenshot_sets_create_instance.

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 the many neighboring create_instance tools, nor any prerequisite or context (e.g. that a preview set must be attached to a localization or version). Usage has to be inferred entirely from the name.

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