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

No annotations are provided, so the description carries the full burden. It clearly signals a read-only operation via 'Get,' but it does not disclose any additional behavioral traits such as pagination, authentication requirements, or lack of side effects. The description adds minimal context beyond the obvious read nature.

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 description is a single, concise sentence that front-loads the purpose and adds a clarifying parenthetical. Every word earns its place, with zero redundant content.

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 read-only tool with one optional parameter and no output schema, the description adequately covers the purpose and scope. It could mention the default limit or return format, but these are already specified in the schema or are self-explanatory for a 'get' operation.

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?

The input schema fully documents the only parameter (limit) with description, default, min, and max, giving 100% schema coverage. The description does not add any parameter-specific meaning, but the baseline of 3 applies because the schema already carries the burden.

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 uses a specific verb and resource ('Get featured marketplace listings') and clarifies the scope with 'endpoints and products highlighted by the platform.' This distinguishes it from sibling tools like get_top_rated and browse_marketplace, which cover different selection criteria.

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?

The description implies usage for retrieving featured listings but does not explicitly contrast this with alternatives or state when not to use it. No exclusions or alternative recommendations are provided, so the guidance is implicit rather than explicit.

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