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

Annotations already declare the operation read-only, idempotent, and open-world. The description adds that it returns a URL, which is useful, but does not disclose additional behavioral details such as response format or external dependencies beyond what annotations already provide.

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 sentences, front-loaded with the action ('Return a quote-request URL...'), and contains no filler. The use-case sentence earns its place by providing when-to-use guidance.

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?

With no output schema, the description's mention of returning a URL partially covers the response. The use case and optional parameter roles are reasonably complete for a simple link generator, though it does not specify the URL format or how optional prefills (sku, family, etc.) affect the generated link.

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 input schema covers 100% of parameters with descriptions, so the baseline is 3. The description does not add parameter-specific detail beyond referencing the spec/SKU concept already captured in 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 clearly identifies the tool as returning a quote-request URL for a packaging spec or SKU, and adds a use-case context ('Use when no exact match exists or the buyer needs bulk or procurement review'). The phrase 'exact packaging spec or SKU' is slightly ambiguous, but the verb and resource are specific enough to distinguish it from sibling handoff tools.

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?

The description explicitly states when to use the tool ('Use when no exact match exists or the buyer needs bulk or procurement review'), giving clear context. It does not name alternative tools, but the conditional phrasing implies the negative case (when an exact match exists, this tool is not appropriate).

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