google_ads_add_audience_to_ad_group

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

No annotations provided. Description only states it adds audience targeting and lists targeting_mode. Does not disclose behavior on existing audiences, error conditions, or consequences. Lack of detail for a mutation tool.

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?

Very concise with clear structure: purpose sentence, similarity note, bullet-point args, return statement, and example. No redundant information.

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?

With 4 parameters and output schema (not shown), description covers core operation and parameter meanings but lacks error handling, duplicate behavior, and detailed return value beyond 'Success message'. Adequate but incomplete.

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 0%, description compensates with brief explanations for all 4 parameters, includes format note for customer_id, and enumerates targeting_mode values. Could clarify default behavior and mode semantics.

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?

Description explicitly states 'Add audience targeting to an ad group.' as a verb+resource pair and distinguishes from sibling 'google_ads_add_audience_to_campaign' by noting it is applied at ad group level for granular control.

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?

Mentions similarity to campaign-level tool, implying ad group scenario, but no explicit when-not or alternatives for audience targeting tools like set_audience_exclusions. Guidance is present but limited.

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