agent_checkout_fulfill

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

With no annotations, the description carries the behavioral burden. It discloses an important prerequisite (logged-in browser session) and implies a write operation (creating an order), but does not explain side effects on the quote, failure conditions, or permissions beyond the session. It provides some useful context but not a full behavioral picture.

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?

The description is a single, front-loaded sentence with no wasted words. It states the operation and the critical prerequisite while staying minimal.

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 simple one-parameter tool with no annotations and no output schema, the description covers the essential invocation requirements: what to do and when it is allowed. It could add more about return values or behavior if the quote is not paid, but these are not blockers for correct invocation.

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 mentions 'paid quote', which helps infer that quote_id refers to the quote being fulfilled, but it does not explicitly define quote_id's format or confirm it is the identifier of the paid quote. The meaning is recoverable but not fully explicit.

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?

The description states a specific verb ('Create'), resource ('order'), and source ('paid quote'), clearly distinguishing it from sibling checkout tools like pay, prepare, and status. The 'paid quote' qualifier makes the tool's place in the flow unambiguous.

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 clearly indicates it is used for turning a paid quote into an order and specifies the precondition of having a logged-in browser session. It does not explicitly name alternatives or exclusions, but the 'paid quote' wording implies the correct sequencing after payment.

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