place_order

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

With no annotations, the description carries the full burden, and it does disclose the single most important trait: the call spends money. It omits reversibility (cancel_order exists), authorization requirements, and any failure modes, so a financially consequential write operation is only half-characterised.

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 clauses, front-loaded with purpose then the cost warning; nothing is padded or redundant. It is telegraphic to the point of under-specification, but not through wasted words.

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?

For a money-spending tool with a required open nested payload, zero schema description coverage, and no annotations, this is not enough to call correctly. The existence of an output schema covers return values, but the input contract and preconditions remain undocumented.

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%, so the description must compensate. It usefully clarifies that confirm must be true rather than merely defaulting to false, but the required nested payload object is left entirely unexplained — the agent has no idea what keys that open object expects.

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 ("Place an order") that an agent can distinguish from read-only siblings like my_orders or order_detail. It does not, however, distinguish itself from near-neighbours such as authorize_order or add_order_to_shopping_list, which an agent could plausibly confuse it with.

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 only guidance is the inline precondition "requires confirm=true", which reads as a parameter constraint rather than when-to-use guidance. Nothing tells the agent what must precede a call (e.g. checkout_context / checkout_summary / authorize_order) or when a sibling is the better choice.

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