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

Annotations already disclose destructive=true, readOnlyHint=false, and openWorldHint=true, so the safety profile is covered. The description adds batch scope ('one or more channels') and that the campaign must already exist, but it does not explain irreversibility, permissions, partial-failure behavior, or response behavior.

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 a single front-loaded sentence with no redundant text. It efficiently states the action, resource, and scope without burying the key 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?

The full schema documentation and destructive/open-world annotations carry much of the context, and there is no output schema to explain. However, for a destructive batch mutation, the description omits prerequisites, error or partial-success semantics, and irreversibility details, leaving it adequate but not fully complete.

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 100%; campaign_id and the nested channel_audiences map are fully documented, including an example. The description adds only a high-level phrase about 'specific audiences' and does not provide format or constraint details beyond the 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?

Names the specific verb 'Remove', the resource 'audiences', and the scope 'one or more channels in an existing campaign', so the action is unambiguous. It does not explicitly name sibling tools such as remove_channels_from_campaign to route between them, so it falls short of the strongest sibling-differentiation standard.

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?

There is no explicit when-to-use guidance, no prerequisites, and no exclusion against sibling removal tools. Usage is only inferable from the verb and resource, which is weaker than clearly stated guidance.

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