ebay_get_item_price_markdown_promotion

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

No annotations are provided, so the description must convey behavioral traits. It does not disclose authentication requirements, rate limits, return value structure (no output schema), or any side effects. The description is insufficient for an agent to understand behavior beyond the basic retrieval.

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 verb. It is efficient but lacks structured elements like bullets or sections. It earns its place but could be more informative while staying short.

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?

Given the absence of an output schema, the description should clarify what the tool returns (e.g., promotion details). It does not. The tool is one of many similar marketing tools, and the description provides no additional context to help an agent understand its role or data.

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 single parameter 'promotionId' has a schema description that merely states it is required, which is a tautology. With 100% schema coverage, the baseline is 3, but the description adds no meaningful context beyond what the schema already indicates.

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 verb 'Get' and the resource 'item price markdown promotion', making the purpose understandable. However, it does not distinguish this tool from similar siblings like 'ebay_get_item_promotion' or 'ebay_get_promotions', which reduces clarity for selection.

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 provides no guidance on when to use this tool versus alternatives, such as when to use 'ebay_get_item_promotion' or 'ebay_get_promotions'. No context, prerequisites, or exclusions are mentioned.

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