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

Annotations only carry destructiveHint=true, so the description does useful extra work: it discloses that the created order is empty, that locations fall back to the first active location, and that status 'new' vs 'draft' changes visibility/reservation behaviour. It does not explain why a create is flagged destructive or what the response returns, so it is good rather than exhaustive.

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 dense sentences plus an endpoint reference, with the most important constraint (EMPTY order) front-loaded and the chaining instructions immediately after. Nothing here is 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?

There is no output schema, so the agent must infer the return value; the description implies chaining but never states that the response yields the order id needed for booqable_book_product. Otherwise it covers scope, defaults and next steps adequately for a 7-parameter create tool.

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 100% and the schema already explains the tricky UTC-as-local timestamp convention, status semantics and location ids in more detail than the description does. The description adds no parameter meaning beyond the schema, so the 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+resource plus a scope qualifier that matters ('Create an EMPTY order for a rental period') and lists the accepted initial statuses. This clearly separates it from siblings like booqable_book_product, booqable_update_order and booqable_transition_order_status, which an agent can route between 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?

Explicitly prescribes the follow-on workflow: add products with booqable_book_product, then reserve with booqable_transition_order_status — that is real when-to-use-next guidance and implicitly tells the agent not to expect line items here. It never states when not to use this tool (e.g. versus update_order on an existing order), so it falls short of a full 5.

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