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

readOnlyHint=true already declares this a safe read, so the bar is lower. The description adds that this is the Admin API surface and what data categories are returned, but says nothing about auth/permission requirements or what happens for a missing order id. Adequate, not rich.

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?

One front-loaded sentence names the operation, the identifier, and the returned field groups, followed by the concrete endpoint. No filler.

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 field enumeration is what makes the return value predictable, and the API path grounds it. The only real gap is the absence of any error/not-found behavior, which for a single-resource read is a minor omission.

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?

The single parameter is fully documented in the schema (uuid, sourced from twicecommerce_list_orders), so the baseline of 3 applies. The description only restates 'by id' and adds no format, validation, or lookup-path detail beyond the schema.

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') and enumerates the payload fields (status, customers, line items, stock items, comments, totals and pricing), so an agent knows exactly what comes back. It does not explicitly distinguish itself from near siblings like twicecommerce_get_customer_orders or twicecommerce_get_order_invoices, keeping it just short of 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?

Usage is only implied: the description names the Admin API path and the enclosing schema note points to twicecommerce_list_orders as the id source, which hints at the list-then-get workflow. There is no explicit statement of when to prefer this tool over the sibling order/payment/invoice getters.

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