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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so safety is covered. The description adds real value by disclosing the return shape (comments with replies, author name and karma), but says nothing about pagination, ordering, empty-result behavior, or handling of deleted apps.

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?

The first sentence is dense and front-loaded with the useful payload. The second sentence is provider attribution that adds no decision-relevant information and could be dropped without loss.

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 simple single-parameter read tool with full annotation coverage, the essentials are present: what is returned and what it is scoped to. Missing are the slug format, pagination/limit behavior, and any note on how deeply replies nest, which an agent would need to use results correctly.

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?

There is one parameter at 0% schema description coverage, so the description carries the burden. It partially compensates by framing the call as 'An app's comments', implying slug is an app identifier, but never states the expected format (app id vs. name-slug) or that it is required.

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 the resource precisely: comments belonging to an app, including replies and per-author name and karma. This clearly distinguishes it from sibling tools like pwamart_get_app or pwamart_get_releases, though the verb is only implied by the title rather than written into the description.

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?

Provides no when-to-use guidance, no prerequisites, and no named alternatives among the many list/get siblings. An agent must infer from the name alone that this is the tool to reach for when it wants commentary on a specific app.

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