google_ads_callouts_create

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

Discloses the two-step mutation, return value format, error on limit, reversibility via remove only, and duplicate creation. No annotations provided, but description compensates fully.

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?

Concise and informative, but slightly dense. Front-loaded with primary action. Could be slightly more structured but effective.

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?

Covers return values, limits, and alternatives. No output schema, but describes typical response. Adequate for a 3-parameter tool with clear purpose.

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 covers all parameters, but description adds cross-reference for campaign_id, fallback for customer_id, and duplicate implication for callout_text. Adds value beyond 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?

The description clearly states it creates a callout asset and links it to a campaign via a two-step mutate process. It distinguishes from sibling tool google_ads_sitelinks_create.

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?

Provides explicit alternative (google_ads_sitelinks_create for sitelinks) and mentions the 20-callout limit and duplicate behavior. However, lacks explicit 'when not to use' guidance beyond the limit.

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