ebay_create_ad_group

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

No annotations are provided, so the description carries the full burden. It only states that the tool creates an ad group and is required for certain campaigns. It does not disclose mutation behavior, authorization needs, error cases, or side effects. Minimal transparency beyond the basic action.

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 extremely concise with two sentences, front-loads the verb and resource, and contains no unnecessary words. Every word adds value.

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 (nested adGroup object) and no output schema, the description is somewhat complete but lacks information about return values, error handling, or prerequisites (e.g., campaign existence). It covers the essential purpose but leaves gaps for a create tool.

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%, with each parameter having a description. The tool description adds context about manual targeting and CPC campaigns but does not provide additional meaning for the parameters themselves (e.g., defaultBid format, campaignId format). Baseline 3 is appropriate as schema already documents the parameters adequately.

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 'create' and the resource 'ad group', and specifies the context of 'manual targeting in a CPC campaign'. It distinguishes from siblings like ebay_clone_ad_group or ebay_bulk_create_ad_group_negative_keywords by focusing on manual targeting in CPC campaigns.

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 says 'Required for CPC campaigns with manual targeting', which provides a condition for usage. However, it does not specify when not to use this tool or list alternatives for automatic targeting scenarios. No explicit exclusion or comparison with other tools.

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