Technical notes on AI engineering, LLM systems, agents, and evaluation.https://qianxinchun.com/https://qianxinchun.com/blog/stop-prompting-coding-agents-start-designing-loops/https://qianxinchun.com/blog/stop-prompting-coding-agents-start-designing-loops/The real shift in AI coding is not from bad prompts to better prompts. It is from human-driven conversations to systems that can observe, verify, remember, and decide when to ask the agent again.Tue, 09 Jun 2026 00:00:00 GMTAgentsLLMsAI EngineeringCoding AgentsLoop Engineeringhttps://qianxinchun.com/blog/why-im-writing-about-llm-systems-and-agents/https://qianxinchun.com/blog/why-im-writing-about-llm-systems-and-agents/A first note on building a public learning practice around LLM systems, agents, evaluation, and the engineering habits behind them.Tue, 09 Jun 2026 00:00:00 GMTLLMsAgentsAI EngineeringWriting