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

The annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered; the description adds genuinely new behavioral context by explaining that the result may be an online quote page, a product page with a callback form, or a phone number. It does not say what happens for product values lacking an online quote path or whether the language parameter changes the destination.

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?

Two dense sentences with no filler, leading with the routing information and following with the when-to-use condition. The opening colon fragment is slightly awkward but still readable and front-loaded.

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 read-only, two-parameter lookup with no output schema, the description carries the essential information: what destinations can come back and when to prefer it. The remaining gaps – untranslated product coverage and the undocumented language parameter – are minor for a tool of this complexity.

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 50% (product documented, language not), and the description compensates only partially, listing a few product families out of 49 enum values. It also cites 'SR-22', which is not present as an enum value (the schema description repeats the same mismatch), while 'auto+home bundle' should map to auto_home_bundle – small sources of confusion the description does not resolve. The language parameter, which governs whether the caller gets an English or Spanish page, is never mentioned.

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 names the resource specifically: the online quote page for a product, the product page with a callback form, or the phone number. It also scopes which products get which destination (auto/SR-22, home/renters/condo, bundle). The verb is implicit – it never plainly says 'returns a link' – so the agent must infer it is a lookup, but the content of the response is described well enough to distinguish it from submit_quote_request or request_callback.

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?

'Use it when the person prefers to finish the quote themselves' is an explicit selection condition that separates it from request_callback and submit_quote_request, and the mention of a callback-form fallback page gives a second usage path. It stops short of naming the alternatives outright or stating when not to call it (e.g., for a product with no online quote page).

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