create_event_audience

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

With no annotations, the description must disclose side effects, limits, and permissions, but it only mentions the membership_duration_days max of 540. It doesn't state whether creating a duplicate display name errors, what happens to existing audiences, or any required permissions. This leaves significant behavioral ambiguity for a create operation.

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 description is two sentences, front-loading the core purpose and then providing a key parameter detail. There is no redundancy or filler; every word earns its place.

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?

The description covers purpose and one parameter limit, but with no output schema and no annotations, it doesn't explain what the tool returns (e.g., audience ID) or preconditions like needing a linked Google Ads account. It is adequate for a simple create tool but leaves room for more contextual guidance.

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?

The description adds meaning for membership_duration_days (max 540) and event_name (examples), but property_id, display_name, and description are not explained. With 0% schema coverage, the description only partially compensates, leaving some parameter semantics implicit or relying on the schema titles.

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 the tool's function: creating a GA4 audience of users who triggered a specific event, with examples ('purchase', 'generate_lead'). It distinguishes this from sibling tools like list_audiences or archive_audience by specifying the create action and event-based audience type.

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?

The description provides a clear use case—remarketing lists for Google Ads—and gives concrete event examples. It does not explicitly state when not to use it or name alternative tools, but the purpose is specific enough to guide selection.

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