ebay_get_inventory_item

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

No annotations provided. The description adds OAuth scope requirements, which is valuable behavioral context. However, it does not disclose other traits like rate limits, read-only nature, or response format. With no annotations, it partially compensates but could be more detailed.

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 short (two sentences) and front-loaded with the main action. The OAuth details are relevant but could be integrated more seamlessly. No wasted 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 retrieval tool with no output schema, the description is sufficient but missing context on what data is returned (e.g., item details like quantity, price). The OAuth info is a plus, but overall could be more complete.

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%; the parameter 'sku' is described in the schema as 'The seller-defined SKU'. The description does not add further meaning, so it meets the baseline for adequate schema 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 clearly states the verb 'Get' and the resource 'specific inventory item', with identifier 'by SKU'. This distinguishes it from siblings like 'bulk_get_inventory_item' (bulk) and 'get_inventory_items' (list all).

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 when you have a SKU and need a single item, but does not explicitly compare to alternatives (e.g., bulk_get_inventory_item, get_inventory_items) or state when not to use it. Minimal guidance.

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