Create variant category

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

Annotations already declare destructiveHint=true, idempotentHint=false and openWorldHint=true. The description goes beyond them by disclosing the auth scope (edit_products) and a non-obvious per-call confirmation gate, both of which the agent would otherwise not know.

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?

Three short sentences, front-loaded with the action, then endpoint/scope, then the confirmation constraint. Efficient, though the opening sentence restates the title with little added 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?

For a mutation tool with no output schema and annotations that already cover the safety profile, the description supplies the key missing pieces: auth scope, the underlying API route, and the confirmation requirement. It stops short of explaining what a variant category is or what the response returns.

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 75% and the description names no parameters directly, so the schema does the heavy lifting. The 'explicit per-call confirmation' sentence loosely reinforces the confirm parameter, but no syntax, ID format, or account semantics are added 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?

The description states a specific verb+resource ('Create variant category') and grounds it in the concrete API operation ('native POST /products/:product_id/variant_categories'), which distinguishes it from update_variant_category and delete_variant_category. It does not explicitly name those siblings, but the create semantics are 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?

It provides the required scope (edit_products) and a per-call confirmation requirement, which are useful preconditions. However, it never states when to choose this over update_variant_category or create_variant, so the routing guidance is implied rather than explicit.

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