Five Critical Agent Engineering Problems Every AI Developer Should Know

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Developers building AI agents are increasingly encountering specific, recurring technical issues that go beyond theoretical questions about agent capabilities. A persistent bug in OpenAI's agent framework causes infinite tool-calling loops when tool_choice is set to required, and the fix requires upgrading to the patched openai-agents-python release rather than adding iteration caps. OpenAI's Assistants API, including its /v1/threads endpoint, is scheduled for full removal on August 26, 2026, with no automated migration tool provided for transferring thread history to the new Conversations format. Microsoft has placed AutoGen in maintenance mode, directing developers to its new Agent Framework — a typed, graph-based system that requires redrawing multi-agent workflows rather than simply translating existing code. Developers are urged to export thread data immediately, audit tool_choice settings, and begin porting Assistants API integrations, as deleted data and expired endpoints cannot be recovered after the deadline.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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