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

Annotations declare readOnlyHint=false and destructiveHint=false, so the agent knows this is a non-destructive mutation. The description adds nothing beyond that: it does not say whether confirming consumes a pending draft, whether it is reversible, whether it requires the prepare step first, or what happens on success/failure. No annotation contradiction.

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 short sentence that is front-loaded, so there is no waste. But it is undersized for a mutation tool with a workflow dependency; brevity here reflects under-specification rather than tight 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?

For a non-read-only mutation with no output schema, 3 params, and low schema coverage, the description should at minimum explain the prepare-then-confirm relationship and the effect of confirmation. None of that is present, leaving the agent to guess how to invoke it 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 coverage is only 33% — only customer_id is documented in the schema. draft_id and connection_context are undocumented in both schema and description, and the description lists no parameters or formats, so the gap is not compensated.

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 verb (confirm) and resource (ad-copy draft), so the basic action is inferable. However it gives no differentiation from the large family of sibling *_confirm tools or from its obvious pair google_ads_copy_ad_prepare, and does not explain what 'confirm' actually does to the draft.

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 versus google_ads_copy_ad_prepare or any other confirm tool. The prepare/confirm workflow, which is clearly the intended usage pattern given the sibling naming, is never mentioned.

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