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

readOnlyHint=true already tells the agent this is a safe read, so the description carries a lower burden. Beyond that it only restates the HTTP endpoint (GET /orders/{id}), saying nothing about not-found behavior, error shapes, or what an order record contains — minimal added value over the annotation.

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 short sentences, front-loaded with the verb and resource; nothing is padded. The endpoint line is marginally redundant with the name but does anchor the call to a concrete API path.

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?

There is no output schema, so the description should at least hint at what an order record returns or how failures surface. For a lookup-by-id tool the agent is left without any picture of the response or error case.

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?

Only one parameter exists and the schema documents it fully at 100% coverage (integer, positive, "The order id"). The description's "by id" merely echoes the schema, so baseline 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 and resource ("Get one order by id") plus the underlying endpoint, so the operation itself is unambiguous. However, it does not differentiate itself from sibling readers such as locate2u_find_order, locate2u_search_orders, or locate2u_list_orders_created, leaving the agent to guess which order-retrieval tool applies.

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 gives no when-to-use guidance and no exclusions. With three sibling tools that also retrieve orders (find_order, search_orders, list_orders_created), the absence of any routing statement is a real gap rather than a minor omission.

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