checkout_shopping_cart

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

No annotations are provided, so the description must convey behavior. It states it takes payment and is gated, but lacks details on side effects (e.g., inventory changes, confirmation). It is reasonably transparent but not fully 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 sentences effectively convey purpose, gate condition, and payment action. No wasted words; front-loaded with key intent.

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?

Given no output schema, the description explains the action (payment checkout) and a key prerequisite (env var). Missing details like confirmation or error scenarios, but sufficient for a payment trigger 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 coverage is 50%, with descriptions for item_id and item_type. The description mentions 'passes, services, or products' which aligns with item_type enum, but does not add significant new meaning beyond schema. A baseline 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 it processes purchases and completes payment checkout for passes, services, or products. This contrasts well with sibling tools that focus on booking or client info, making its unique purpose evident.

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?

It explicitly mentions being gated behind an environment variable and warns that it takes payment and returns an error if disabled. While it doesn't explicitly list when not to use, the context strongly implies it is for payment only, distinct from booking tools.

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