ebay_live_stream_items

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

No annotations are provided, so the description carries the behavioral burden. The verb 'List' implies a read-only operation and the description usefully mentions live bidding state, but it does not disclose behavior around invalid ids, inactive streams, pagination, freshness, or authentication requirements.

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 two short sentences with no filler. The first sentence states the primary purpose directly, and the second adds the important live auction/bidding context. The content is front-loaded and every sentence contributes.

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 one-parameter, low-complexity listing tool, the description covers the essential input, the result category, and a distinguishing output detail: live bidding state. It does not document output structure beyond that, but with no output schema present, the high-level behavior is mostly sufficient.

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 already fully documents the single required parameter: 'id' is described as 'eBay Live stream/event id', giving 100% schema description coverage. The tool description adds no extra parameter detail beyond matching the id to a stream, so the baseline score is appropriate.

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 ('List an eBay Live stream's featured items') and adds a clear outcome: returns currently featured/auction items with live bidding state. It is not explicit about how this tool differs from sibling tools like ebay_live_stream or ebay_live_streams_batch, so it stops just short of fully differentiating itself.

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?

There is no guidance on when to use this tool versus alternatives such as ebay_live_stream, ebay_live_streams, or ebay_live_streams_batch. The agent must infer selection entirely from the tool name and nearby sibling names.

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