Question

You are building a semiautonomous Azure AI Foundry agent for an e-commerce operations team. The agent uses a custom function tool named submit_refund that calls an internal payments API to issue customer refunds. During load testing you notice that transient network timeouts occasionally cause the agent's runtime to retry the tool call, resulting in some customers being refunded twice. You must prevent duplicate refunds without disabling automatic retries. What is the most effective approach?

Accepted Answer

Add an idempotency key parameter to the submit_refund tool schema and have the payments API deduplicate requests that share the same key

Answer

Lower the agent's temperature parameter to 0 so the model produces the same tool arguments on every call

Answer

Set tool_choice to 'none' so the model stops invoking submit_refund automatically

Answer

Increase the function tool's max_tokens so the completion is never truncated mid-call