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

Annotations declare readOnlyHint=true and destructiveHint=false, so the safety profile is already known. The description adds that it returns a catalog with tracking links, which is a useful behavioral detail beyond the annotations. No contradiction with annotations.

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?

Two sentences with no redundancy. The main action and purpose are front-loaded, and the usage guideline is a single clear sentence. Every word earns its place.

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 tool with one parameter and read-only annotations, the description covers the essential context: what it does, when to use it, and that it returns a catalog with tracking links. The output format is not detailed, but given the absence of an output schema and the tool's simplicity, this is acceptable.

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% (the sole parameter 'useCase' is described with an example). The description adds no new information about the parameter beyond what the schema already provides. The description's 'Given a user use-case' mirrors the schema, so it meets the baseline for high coverage.

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 states a specific verb ('returns') and resource (the AMZScout tools & Sellerhook services catalog) and explicitly frames its purpose as recommending the right product/feature. It also distinguishes itself from sibling analysis/search tools by clarifying it handles 'which tool' questions.

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?

It gives an explicit trigger condition: 'Use for "which AMZScout tool should I use for X" questions.' This is clear when-to-use guidance, though it does not explicitly list when-not-to-use or name alternative tools. The sibling tools are implied as the alternatives for actual analysis, but the description doesn't make that contrast explicit.

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