Get a listing

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

With no annotations provided, the description carries the full burden. It does not explicitly state that this is a read-only operation or disclose any side effects, rate limits, or error behavior. The term 'get' implies read-only, but it is not made explicit.

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 concise and free of extraneous words. It conveys the essential purpose and included data sets in a single sentence, making it easy to scan and parse.

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?

The tool is simple (two parameters, no output schema). The description provides enough context about what is returned and the default includedData value. It omits details like error responses or pagination, but these are not critical for a basic read operation with low complexity.

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 coverage is 100% for both parameters (sku and includedData). The description does not add significant meaning beyond the schema, though it does clarify the default for includedData. Since the schema already explains each parameter, a baseline score of 3 applies.

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 clearly states the tool fetches full details for a single SKU, enumerating the specific data sets (summaries, attributes, offers, issues, fulfillment availability). This distinguishes it from list/list operations and provides a precise, actionable purpose.

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 use for a single SKU via 'one SKU' but does not explicitly contrast with siblings like list_listings or set_quantity. It lacks a clear 'when not to use' or direct alternative guidance, leaving some inference required.

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