Variants_Retrieveavariant

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 fails to indicate whether the operation is read-only, what happens if the variant is not found, or any side effects. The bare description gives no behavioral context.

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 excessively short (four words) and, while concise, fails to provide essential information. It does not earn its place as it offers no more than a restatement of the tool name.

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 4 parameters and no output schema or annotations, the description is severely incomplete. It provides no explanation of the resource being retrieved, the meaning of the filter parameters, or the expected return value. The agent lacks sufficient context to use the tool correctly.

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 description coverage is 100%, but each parameter's description is merely 'Query parameter: [name]', adding no semantic value. The tool description also does not explain how parameters like 'filter[product_id]' or pagination affect results. Baseline is 3 due to high coverage, but the poor quality of schema descriptions and lack of additional context justify a lower score.

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 'Retrieve a variant' is a tautology of the tool name 'Variants_Retrieveavariant'. It states a verb and resource but adds no specificity about what a variant is or how it differs from similar tools like 'Variants_Listallvariants'.

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 vs. alternatives. The sibling 'Variants_Listallvariants' is closely related, but the description does not explain the distinction between retrieving a single variant vs. listing all variants.

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