Mark_as_paid_COD

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

No annotations are provided, so the description must carry the full burden. It discloses that the tool changes payment status to Paid and order status to Complete, which is minimal behavioral info. It does not mention prerequisites (e.g., order must be COD), idempotency, or side effects for already paid orders.

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 sentence, no redundant words. However, grammatical awkwardness ('by Mark payment status') slightly reduces clarity.

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?

With an output schema present, return values need not be explained. But the description lacks context about prerequisites (e.g., order must be COD and not already paid) and error conditions. Somewhat incomplete for a mutation 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 100% (one parameter with description 'Order number'). The tool description ('selected order') adds no new meaning beyond the schema. Baseline score 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 specifies the action (update order status to Complete by marking payment as Paid) and the resource (selected COD orders). It effectively distinguishes from siblings like Mark_as_ship and Cancel_Order by focusing on COD payment method.

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 that this tool is specifically for orders with COD payment method ('that payment method is COD'). While it does not explicitly state alternatives, the context is clear enough for an agent to infer when to use this tool versus others.

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