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

Annotations already declare readOnlyHint=false, destructiveHint=false and openWorldHint=false, so the safety profile is partly covered. The description adds nothing beyond that: it does not say whether confirmation executes the real campaign creation, whether it is irreversible, whether it is idempotent, or what happens if the draft is stale. For a mutation step this is thin.

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?

It is a single front-loaded sentence, but here brevity is achieved by omission rather than economy. The description is under-specified rather than genuinely concise, so the short form does not earn its place.

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 mutation tool with no output schema and only a third of its parameters documented, the description is far too sparse. An agent lacks the lifecycle context, prerequisite, and parameter meaning needed to invoke this correctly.

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 only 33%: customer_id is documented, but draft_id and connection_context are not. The description adds no parameter meaning whatsoever, so it fails to compensate for the low coverage, leaving two of three parameters undocumented.

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 states a specific verb and resource: confirming a campaign-create draft. An agent can tell this is the approval step of a draft lifecycle. It does not, however, name or contrast with the paired google_ads_campaign_create_prepare tool or any sibling, so it stops short of full differentiation.

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 when-to-use guidance at all. The description never says that a draft must first be produced by google_ads_campaign_create_prepare, nor when confirmation is required versus skipped. The prepare/confirm pairing is only inferable from the tool name, not the description.

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