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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description usefully adds that related data is opt-in via `with` rather than returned by default, but says nothing about auth, rate limits, or behavior when the order id doesn't exist.

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 compact sentences, front-loaded with the core action, followed by the return payload and the expansion mechanism. Zero filler; the trailing endpoint is a small redundancy but useful for debugging.

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 earns its place by enumerating the shape of the returned order (status, amounts, dates, properties, items, address relations). The only meaningful gap is not stating the error behavior for a missing order id.

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 67%; the `with` array has an enum but no schema description, and the description compensates by explaining its purpose and naming representative values ('addresses, comments, payments, documents, shippingPackages ...'). `add_order_items` is left to its schema description, which is adequate.

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 — 'Get one order by id' — plus the concrete fields returned and the underlying endpoint. The word 'one' implicitly distinguishes it from the sibling plentymarkets_list_orders, though it never names that alternative explicitly.

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?

Usage is only implied: the agent can infer 'call this when you need a single order's details, use list_orders for many.' No explicit when/when-not statement, no mention of plentymarkets_get_order_status_history or how this relates to it.

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