ebay_create_ad_group_negative_keyword

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

With no annotations, the description only states that it 'creates' and 'prevents ads.' It does not disclose important behavioral details such as idempotency, overwrite behavior, prerequisites, or error conditions.

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?

Two short, clear sentences with no unnecessary words. Every sentence adds value: the first states the action, the second explains the effect.

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 annotations and output schema, the description is too minimal. It lacks context about prerequisites, error handling, or the overall workflow. A more complete description would help the agent understand when and how to use this tool effectively.

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 has 100% description coverage, so the schema already documents each parameter. The description adds no further semantic value beyond stating 'ad group-level' scope. Baseline 3 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 clearly states it creates an 'ad group-level negative keyword' and explains its effect. This distinguishes it from campaign-level negative keywords (ebay_create_campaign_negative_keyword) and bulk operations, though it does not explicitly name those siblings.

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 does not provide guidance on when to use this tool versus alternatives like ebay_create_campaign_negative_keyword or ebay_bulk_create_ad_group_negative_keywords. It only states the function, not the appropriate context.

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