mailchimp_ecommerce_stores_add

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It simply restates the tool's name ('Add a new e-commerce store') without revealing any behavioral traits such as permissions required, idempotency, error handling, or what happens if the store ID already exists. No value beyond the name is added.

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 wasted words. It is appropriately sized for a simple create operation and 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 tool has no annotations and no output schema, so the description must compensate by explaining context such as required relationships (e.g., list_id must belong to an existing list) and expected behavior on success or conflict. The one-line description does not provide this, making it inadequate for a mutation tool with 8 parameters.

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 input schema has 100% parameter description coverage, so the schema already explains each parameter's meaning. The description adds no parameter-level information. According to the baseline, a high coverage schema earns a 3 even without additional detail in the description.

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 'Add a new e-commerce store' clearly states the specific verb ('Add') and resource ('e-commerce store'), and it distinguishes this tool from its sibling tools like list, get, update, and delete. It is not a tautology because it adds 'new' and the intent is unambiguous.

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 no guidance on when to use this tool versus alternatives. It does not mention prerequisites (e.g., an existing list_id) or when to use update instead of add. The usage is only implied by the tool name and description, which is insufficient.

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