checkout

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

The description mentions 'via browser automation', which is a behavioral trait, and implies the order will be placed. However, it does not disclose side effects (e.g., cart cleared, payment required) or prerequisites (non-empty cart). With no annotations, more detail is needed.

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 sentences, each efficient and front-loaded. No wasted words, and the core purpose is delivered immediately.

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?

While the purpose is clear, the description omits necessary context such as preconditions (non-empty cart), return value (no output schema), and error scenarios (e.g., invalid address). For a 3-parameter tool with no annotations, it is minimally adequate.

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 coverage is 100%, so the input schema already describes all parameters. The description adds no additional meaning beyond the schema, meeting the baseline expectation.

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 that the tool proceeds to checkout and initiates the order, distinguishing it from sibling tools like add_to_cart or view_cart. It uses a specific verb-resource pair and implies the final step in the purchase flow.

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?

No explicit guidance on when to use this tool (e.g., after adding items to cart) or when not to use it (e.g., if cart is empty). No alternatives are mentioned, leaving the agent to infer context from sibling names.

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