createCategoryGroup

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

The description does not disclose any behavioral traits beyond creation. With no annotations, the description carries the full burden, but it omits details such as side effects, permissions, constraints, or whether it returns the created object. This is insufficient for a mutation 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 a single, very short sentence with no wasted words. However, it is overly terse and could benefit from slightly more detail without losing 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?

Given the tool has two parameters including a nested object, no output schema, and no annotations, the description is severely incomplete. It does not explain what a category group represents, what the response contains, or any usage context, making it inadequate for proper selection and invocation.

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 50%: plan_id is well-described in the schema, but category_group has no description for the outer parameter. The tool description adds no additional meaning for either parameter, failing to compensate for the lack of schema coverage on category_group.

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 creates a new category group. The verb 'creates' and resource 'category group' are specific, and the name matches sibling tools like createAccount and createCategory, distinguishing it from them.

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 is provided on when to use this tool versus alternatives like updateCategoryGroup or getCategories. There is no mention of prerequisites, such as the plan must exist or that category group names must be unique.

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