AI Agents Can Send Duplicate Emails Due to Retry Loops, Requiring Idempotency

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AI agents can inadvertently send duplicate emails due to multiple layers of automatic retries. This occurs when an initial email send attempt times out but actually succeeds, leading the system to retry. The root cause is a failure to record a successful action, prompting retries from HTTP clients, orchestrators, the AI model, or after a system crash. The solution is to design tool calls to be idempotent, ensuring repeated execution has the same effect as a single execution.

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