Get ad group

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds that the payload includes targeting, bidding and status, but discloses nothing further about permissions, failures, or completeness of the returned object.

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?

A single, front-loaded sentence with no filler or repetition. It is appropriately terse, though the terseness is partly a symptom of missing detail rather than disciplined editing.

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 single-object read with safety annotations, the description is nearly adequate and even sketches the returned fields, which helps since no output schema exists. However it leaves the required parameter undocumented and gives no error or edge-case context.

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 description coverage is 0% and the description does not mention ad_group_id at all, providing no meaning for the sole required parameter. The parameter name is fairly self-explanatory, but the description fails to compensate for the coverage gap.

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?

States a specific verb and resource ('Get an ad group') and enumerates the content returned (targeting, bidding, status). It is clearly distinguishable from list_ad_groups/create_ad_group/update_ad_group by implication, but never names or contrasts siblings explicitly.

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 when-to-use or when-not-to-use guidance, no prerequisites (e.g., needing a valid ad_group_id), and no routing to alternatives like list_ad_groups. The single-object read context is only implied by the name and title.

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