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get_audience_growth

Retrieve monthly audience growth data including subscribes, unsubscribes, and net change for a Mailchimp list over a specified number of months.

Instructions

Get monthly audience growth history — subscribes, unsubscribes, and net change over time.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
list_idYes
countNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided, so the description must carry the burden of transparency. It only states it 'gets' data, implying a read operation, but does not disclose any behavioral traits such as authentication needs, rate limits, or what happens with missing data.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no wasted words. It efficiently conveys the core purpose and output.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (2 parameters, output schema exists), the description covers the return values but omits parameter explanations. It is minimally viable but not fully complete, as it fails to describe how list_id and count affect the result.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description does not mention any parameters. With 0% schema description coverage, the description adds no meaning beyond the schema. The required list_id and optional count are entirely unexplained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'get' and the resource 'monthly audience growth history', specifying the exact data fields: subscribes, unsubscribes, and net change. This distinguishes it from sibling tools like get_audience or get_audience_locations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage when growth history is needed but offers no explicit guidance on when to use this tool versus alternatives, nor any exclusions or prerequisites. It lacks context for decision-making.

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

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