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

Annotations only say readOnly=false, destructive=false, openWorld=false; the description goes well beyond by disclosing a quota cost ('Consumes one quote allowance'), idempotency behavior ('Reuse idempotencyKey for retries'), the return artifact ('a browser link for customer checkout'), and hard downstream limits (individual-part update and checkout blocked). These are exactly the operational traits an agent needs before committing a write.

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 short sentences, front-loaded with the purpose and input modes, then cost, then retry semantics, then output/limits. Every sentence carries information; density is high but nothing is padding, though the description is close to the upper limit for its length.

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?

An output schema exists, so return values need not be detailed, and the description still notes the checkout link. Given the complex nested configuration, it adequately covers sourcing the geometry, the review prerequisite, quota impact, retry behavior and blocked follow-ups; only the explicit predecessor tool is left implicit.

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 explains configuration, reviewedRevision, reviewConfirmed and idempotencyKey. The description's mention that idempotencyKey should be reused for retries largely restates the schema's own 'Stable unique key for retrying this complete-set quote', adding no new syntax or format detail, so the baseline of 3 applies.

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?

States a specific verb (Quote) plus the resource (workholding: locating nests, clamped fixtures, soft jaws) and the input mode (dimensions or a supported straight-extrusion STL), so the agent can distinguish it from prepare_workholding and from the other quote_* siblings. The scope is sharpened by 'the exact customer-reviewed configuration and revision as one complete set', which rules out partial quoting.

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 conveys the precondition (a configuration and revision that the customer has already reviewed) and the downstream restriction ('individual-part update and checkout are blocked'), which tells the agent this is a terminal, whole-set action. It does not explicitly name the sibling to call first (prepare_workholding) or which tool handles updates/quotes.get, leaving a small inference gap.

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