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

Annotations only declare readOnlyHint=false, openWorldHint=false, destructiveHint=false. The description adds genuine context beyond that: an allowance is consumed per call, retries are idempotent via idempotencyKey, the response yields a checkout browser link, and per-part update/checkout paths are blocked. It omits auth/permission requirements, so it lands at 4.

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?

Five compact sentences, front-loaded with the resource and kit definition before the action and behavioral constraints. Each sentence carries distinct information (composition, action, cost, retries, return/blocked behavior) with minimal waste.

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 annotations, a fully described nested schema, and an output schema, the description only needs to cover workflow and side effects, which it does (reviewed revision prerequisite, allowance consumption, idempotency, blocked paths). It leaves authentication context to the accessToken schema field, which is acceptable but not exhaustive.

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%, so the schema already documents all five parameters including the nested configuration fields. The description reinforces the complete-set requirement for configuration and the retry semantics of idempotencyKey but adds no syntax or format detail beyond the schema, so the baseline 3 is appropriate.

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 states a specific verb+resource (quote a compliant gripper kit) and defines kit composition (two TPU pads, two carriers, two keepers), so the agent knows exactly what is produced. It stops short of naming how it differs from the parallel sibling tools quote_enclosure/quote_stamping/quote_workholding, so it earns a 4 rather than a 5.

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?

It specifies the prerequisite state ('customer-reviewed configuration and revision as one complete set'), warns about cost ('consumes one quote allowance'), instructs on retry behavior ('reuse idempotencyKey for retries'), and notes exclusions ('individual-part update and checkout are blocked'). It never explicitly routes to prepare_gripper or contrasts with the other quote_* siblings, which keeps it from a 5.

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