ebay_update_ad_group_bids

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

No annotations are provided, and the description is minimal. It does not disclose behaviors such as whether bids are overwritten or merged, required permissions, rate limits, or side effects. The description carries the full burden but fails to add meaningful behavioral context.

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, which is front-loaded with the purpose. However, it is overly sparse; additional context would improve usefulness without sacrificing conciseness.

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 complexity of the tool (3 required params, nested objects, no annotations or output schema), the description is insufficient. It does not explain the effect of the update, whether it replaces or modifies, or any prerequisites like campaign existence.

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%, so the input schema sufficiently documents all parameters. The description adds no extra meaning beyond stating 'default bids.' Baseline score of 3 is appropriate as the description does not improve or clarify parameter usage.

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 action ('Update') and the target resource ('default bids for an ad group'). It effectively distinguishes from sibling tools like ebay_update_ad_bid (updates individual ad bids) and ebay_update_ad_group (updates ad group settings).

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?

No guidance on when to use this tool versus alternatives (e.g., ebay_update_ad_bid or ebay_update_ad_group_keywords). The description does not provide context for appropriate usage scenarios or prerequisites.

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