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 covered. The description adds only 'confirm' and 'draft'—no side effects, irreversibility, auth requirements, or rate-limit context beyond what annotations provide.

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. It is appropriately terse for a confirm operation, though its extreme brevity overlaps with under-specification that other dimensions capture.

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 in a prepare/confirm pair, with a required but undocumented draft_id and no output schema, the description is too thin. It omits how the draft is produced and what confirmation actually results in.

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% (only customer_id is documented). The description mentions no parameters at all, so draft_id and connection_context receive no semantic clarification from either the description or the schema.

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 and resource, but 'confirm' is ambiguous about whether it executes creation, validates approval, or finalizes a draft. It does not differentiate from google_ads_ad_group_create_prepare or other confirm siblings, leaving the actual effect vague.

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 guidance, no mention that it should follow google_ads_ad_group_create_prepare, and no prerequisites or alternatives are named. The agent must infer the prepare/confirm workflow from the tool name alone.

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