kroger_checkout

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

No annotations are provided, so the description bears full responsibility for disclosing side effects. It mentions 'Returns order summary for confirmation' but does not clarify whether the order is actually placed, whether payment is processed, or what happens to the cart after checkout. There is no mention of prerequisites like authentication or having items in the cart, nor any warning about irreversible side effects. This lack of transparency is significant for a checkout action.

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 consists of two short sentences that immediately state the purpose and output. There is no redundant information or filler, making it appropriately concise and well-structured.

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 checkout tool with 3 parameters, no output schema, and no annotations, the description is too sparse. It does not mention prerequisites (e.g., logged in, items in cart, slot selected), failure conditions, or whether the order is finalized. The return value is mentioned only vaguely as an 'order summary for confirmation,' which is insufficient for an agent to fully understand the tool's behavior in a complex workflow.

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 input schema provides a description for every parameter (100% coverage), so the description adds minimal value beyond that. It does not explain inter-parameter dependencies (e.g., slotId depends on fulfillmentType) or provide any additional formatting or selection guidance. With full schema coverage, a baseline of 3 is appropriate.

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 clearly states the tool's function: 'Proceed to checkout with the current cart.' This uses a specific verb ('proceed to checkout') and resource ('current cart'), and it distinguishes itself from sibling tools like add_to_cart or view_cart. It also mentions the return value, making the purpose 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 implies this tool is used after cart preparation and slot selection (it references 'current cart' and takes slotId/fulfillmentType as inputs). However, it does not explicitly state when not to use it or name alternative tools like update_cart_item or get_delivery_slots. The context is clear but exclusions are absent.

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