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

The description accurately indicates a create operation, consistent with readOnlyHint=false and destructiveHint=false. However, it does not disclose potential side effects, idempotency, or uniqueness constraints beyond the implicit creation 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 contains duplicated phrases and an odd trailing 'Guidance:' / 'context: name' segment, which adds noise without value. It is short but not cleanly structured.

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 is simple and the description covers the basic action and purpose. However, with no output schema, it omits what the response contains (e.g., created option ID) and any error or uniqueness details, leaving some context incomplete.

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 single parameter `name` is documented in the schema, including the lowercasing behavior. The main description does not add further semantic context beyond what the schema already provides.

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 action ('Creates') and the resource ('a new option') with a purpose ('differentiate product variants'). It is distinct from sibling tools by naming 'option' versus other entities, though it does not explicitly contrast with alternatives.

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 explicit guidance on when to use this tool versus alternatives such as shop_create_variant or other create tools. The purpose is implied but not contrasted with siblings.

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