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

With no annotations, the description must carry the full behavioral burden. It reveals the setup will be 'paused' and lists components, but it does not disclose whether this is a mutation, what side effects occur, permission requirements, or the shape of the response. The word 'prepare' implies staging, but that is ambiguous.

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 single sentence is terse and free of fluff, with the component list front-loaded. However, it leans toward under-specification, sacrificing clarity for brevity, so it does not merit a 5.

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 complex multi-component body, no output schema, and no annotations, the description is far too sparse. An agent would struggle to construct a correct body payload or understand the prepare/confirm flow, especially with dozens of sibling tools.

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 50% because the body parameter has no schema description. The description hints that the body likely contains budget, campaign, ad group, keywords, and RSA, but it never explicitly maps these to the body object or explains customer_id beyond the schema. This provides some value but does not compensate for the missing parameter documentation.

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 names a specific verb ('Prepare') and resource ('guided paused Search setup') and enumerates the five component types (budget, campaign, ad group, keywords, RSA), which clearly identifies the scope. It is distinct from the confirm sibling and individual prepare tools, though it does not explicitly contrast with them, so it falls short of a 5.

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 is provided on when to use this tool versus the quick_create_confirm sibling or the individual prepare tools. The description neither names alternatives nor states conditions, leaving the agent to infer from the tool name that this is a staging step.

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