Get DNS product variants

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint, so the safety profile is covered. The description adds useful behavioral detail beyond the annotations: each variant has its own 16-hex id and the default response shape is compact=true. This gives the agent extra context about the data and output style without contradicting any annotation.

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 two short sentences with no filler. The core meaning is front-loaded ('Configuration options on the product card'), and each sentence adds distinct information: examples, id format, and default response behavior.

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 zero-parameter, read-only tool with annotations and no output schema, the description is largely sufficient: it identifies the resource, gives examples, and notes an important default. The main missing piece is clarifying what 'compact=true' means and how the product card context is established, but this is a minor gap given the simplicity and sibling context.

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 tool has zero parameters, so the input schema is trivially complete and the baseline for parameter semantics is 4. The description adds a minor bonus by mentioning 'Default compact=true,' though this is not formally tied to a schema property since there are no parameters.

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 title supplies the active verb ('Get') and the description names the resource: 'Configuration options on the product card' with concrete examples like color and memory. This is clearly distinct from sibling tools about reviews, specs, availability, or search, though the description itself is phrased as a noun phrase rather than an explicit action statement.

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?

There is no explicit guidance about when to use this tool or when to prefer a sibling such as dns_product_details, dns_product_specs, or dns_compare_products. The description implies it is for variant configuration lookups, but it never states conditions, exclusions, or alternatives, leaving the agent to infer usage context.

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