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

Annotations already declare destructiveHint=false and idempotentHint=true, so the safety profile is partly covered. The description adds genuinely new context: the tool charges nothing even when online payment applies (the guest pays via a returned payment link), the venue must accept after placement, and tracking continues via orderCode. That is material behavioral disclosure beyond the annotations.

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?

Four sentences, no filler, and the primary action is front-loaded. The payment-charges-nothing caveat is appropriately attached to the payment-link sentence rather than buried. Slightly dense but every sentence carries actionable information.

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 still discloses the meaningful return behavior (payment link when payment is online) and the post-placement lifecycle (venue acceptance, track_order via orderCode). For a one-parameter mutation with sibling tools, nothing essential is missing.

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 0% for the single draftId parameter, but the description compensates by explaining exactly where the value comes from (draft_delivery_order output or place_delivery_order). The retry/idempotency note also clarifies the semantic meaning of reusing the same draftId, which the bare string schema does not.

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 gives a specific verb+resource ('Places a drafted delivery order exactly as drafted') and immediately differentiates itself from the similarly named place_delivery_order and draft_delivery_order by explaining where its draftId originates. An agent can distinguish confirm_delivery_order from its two closest siblings without opening a schema.

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 clearly states the provenance of draftId (from draft_delivery_order, or from place_delivery_order when the connection confirms each decision), which effectively routes the agent between related tools. It stops short of an explicit 'do not use this to create a fresh order' exclusion, but the context is clear.

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