clear_cart

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

Annotations indicate destructiveHint=true and idempotentHint=true, so the destructive and idempotent nature is already documented. The description adds 'No charge', which is a behavioral detail beyond the annotations, confirming no monetary impact. No contradiction with annotations.

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 extremely concise, consisting of two short sentences. It is front-loaded with the core action and provides just enough additional context ('No charge') without any 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?

Given the tool has no parameters, existing annotations covering behavioral traits, and a simple purpose, the description is complete. It tells the agent exactly what the tool does and one key behavioral property. The presence of an output schema is not needed to explain return values for this clear action.

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 has no parameters, and schema coverage is 100%. With 0 parameters, baseline is 4 as per rubric. The description does not need to add parameter information, and it correctly stays silent.

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 'Remove all cart items' with the specific verb 'Remove' and resource 'cart items'. It includes an extra detail 'No charge' that clarifies the action's side effect. The tool name matches the action, and it is easily distinguishable from siblings like update_cart_item or view_cart.

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 does not explicitly state when to use this tool versus alternatives. While the action is simple and self-explanatory, there is no mention of when not to use it or alternatives like update_cart_item for removing individual items. The usage is implied from the name.

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