A customer contacts the agent about a warranty claim on a power drill. Resolving this requires multiple…

Question

A customer contacts the agent about a warranty claim on a power drill. Resolving this requires multiple sequential tool calls: get_customer to look up their account, lookup_order to find the purchase details, and then either process_refund or escalate_to_human depending on warranty eligibility. You’re implementing the agentic loop that orchestrates these steps using the Claude API. What is the primary mechanism your application uses to determine whether to continue the loop or stop?

Accepted Answer

D. You check the stop_reason field in each API response – the loop continues while it equals “tool_use” and exits when it changes to “end_turn” or another terminal value.

Answer

A. You manually set the tool_choice parameter to “none” after the final expected tool call to force Claude to stop requesting tools.

Answer

B. You check whether Claude's response contains a text content block – if text is present, the agent has produced its final answer and the loop should exit.

Answer

C. You track the number of tool calls made and exit the loop once a preconfigured maximum is reached.

Question 51