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

Annotations only provide destructiveHint=true, so the description carries the disclosure burden and does well: nothing is charged or produced, confirmation/charge happens later in the dashboard, and the POST /orders endpoint is named. It does not explain auth requirements, rate limits, or why the tool is flagged destructive.

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?

Three tight sentences, front-loaded with the draft/no-charge constraint, then the confirmation requirement, then the item-identity rule. No filler or repetition of the name.

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 an 8-parameter creation tool with nested objects, 100% schema coverage and no output schema, the draft/confirm lifecycle and item-variant requirement cover the main gaps. It stops short of saying what is returned (e.g. draft order id) or the prerequisites for confirming the draft.

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 100%, so baseline is 3, but the description adds a genuine cross-field rule the JSON schema cannot express: each item needs exactly one of variant_id (+ files), sync_variant_id, external_variant_id, warehouse_product_variant_id, or product_template_id (+ variant_id).

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 and resource (create an order) plus the crucial qualifier that it is a DRAFT with no charge or production, which separates it from a real order flow and from printful_update_draft_order. The upstream endpoint (POST /orders) is also disclosed.

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?

Makes clear this tool is for staging an order that must later be confirmed in the Printful dashboard, and explicitly warns it is never used with confirm. It gives usage context but does not name sibling alternatives (e.g. update_draft_order, estimate_order_costs) or state exclusions for when a draft is the wrong path.

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