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

With no annotations, the description carries the full behavioral burden and delivers almost nothing: 'Create' implies a mutation, but there is no mention of required permissions, what happens on duplicate bundle_id/SKU, whether the app is created in a live or editable state, or how failures surface. Only the external system (App Store Connect) hints at auth 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?

A single short phrase with no waste and the operation front-loaded, but it is under-specified rather than truly concise. Nothing in it is filler, yet nothing in it is informative either.

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 6-parameter, 3-required mutation tool with no annotations and no output schema, the description should cover prerequisites (existing bundle id, auth) and post-conditions. It covers none of these, leaving an agent unable to call it correctly without inspecting sibling tools.

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 17% — only notification_message is documented, and that documentation lives in the schema, not the description. The description adds zero meaning for bundle_id, app_name, sku, primary_locale, or version_string, so with 6 params and low coverage it fails to compensate.

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?

States a specific verb and resource ('Create ... app') scoped to App Store Connect, which is enough to separate it from create_app_bundle and create_bundle_id. It stops short of explicitly naming those siblings as different, but the noun distinction is clear.

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 guidance on when to use this versus create_app_bundle/create_bundle_id, and no prerequisites stated. A caller is left to guess that a bundle_id must already exist and that an authenticated ASC session is required before calling.

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