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

Annotations indicate this is not read-only, not destructive, not idempotent. Description adds that the audience is 'owner-private' and 'reusable', which are useful behavioral traits beyond annotations. However, it does not disclose potential constraints like uniqueness of name or side effects of creating duplicates.

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?

Single sentence, no filler, front-loaded with verb and resource. Every word adds value. Perfect conciseness.

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, no parameter descriptions, and no usage guidance, the description is incomplete. Despite having an output schema, the agent lacks sufficient information to correctly populate optional fields like channels and pain_points. More detail is needed for a creation tool.

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 0%, meaning the description does not elaborate on any parameters. The schema itself has no descriptions, only constraints like maxLength. The agent must guess the meaning of 'channels' and 'pain_points' from context. The description should clarify these fields, but it does not.

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 clearly states verb 'create', resource 'marketing audience', and key attributes 'owner-private' and 'reusable'. It distinguishes from sibling tools like update_marketing_audience and get_marketing_audience. Could be more specific about the audience's role in campaigns, but purpose is clear.

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 on when to use this tool versus alternatives. There are sibling tools like get_marketing_audience and update_marketing_audience, but the description does not mention them or provide context on when to create vs. edit. Agent must infer from name alone.

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