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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered. The description adds real value with two caveats: data is 'cached' (may be stale) and a successful call does not imply the release is live. However, 'store review/rollout states' is ambiguous and could be misread as a write, which is not clarified.

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 only two sentences, and the useful caveat is placed last, but the first sentence is garbled enough that brevity does not translate into clarity. The opening verb+resource is front-loaded, which is a point in its favor.

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?

With no output schema, no parameter descriptions, and no usage guidance, the description needs to do more work than it does. Pagination behavior, what a release record contains, and the effect of the cache on freshness are all left unstated.

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 0%, so the two parameters (appId, cursor) are documented nowhere. The description does not mention appId as the required scope or explain that cursor is for pagination, leaving the caller to infer both.

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 name and title say 'List releases', and the description opens with 'Read cached releases', but the second half of that clause ('and store review/rollout states') is cryptic and sounds like a mutation rather than a listing. It never states the scope (all releases for an appId?) and gives no hint of how this differs from siblings like list_reviews or check_apple_release.

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, no prerequisites, and no named alternative among the many list_* siblings. The only guidance offered — 'Success of an operation does not mean the release is live' — is a behavioral caveat, not a usage rule.

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