How to Test Tool-Calling Accuracy in AI Agents
An agent can fail in two places when it uses a tool. It can choose the wrong tool, or it can choose the right one and send the wrong arguments. Those failures tell you different things. If an agent calls lookup_order instead of refund_order, the problem is tool selection. If it calls refund_order with the wrong order_id, it chose the right tool and passed the wrong arguments. This guide covers three ways to test tool-calling behavior. The first is a reference-free large language model (LLM) judg