LWLeo Wanginleo-wang.hashnode.dev·Aug 14 · 2 min readMemory Doesn't Exist — You're Just Forging HistoryThere's a team whose death I remember especially well. They built a customer-service Agent with a "user profile" — a user says "I'm a VIP customer, Zhang Wei" once, and in every conversation after the00
LWLeo Wanginleo-wang.hashnode.dev·Aug 5 · 2 min readThe Prompt Is Not a Spell — It's Structured Context Injection "10 magic openings that boost GPT's IQ by 50." "Add this one sentence and your output quality jumps 200%." That's the typical content on Xiaohongshu, Zhihu, and paid prompt communities — and 95% of th00
LWLeo Wanginleo-wang.hashnode.dev·Aug 4 · 2 min readWhat Actually Happens During a Single LLM Call? The first time I called the OpenAI API with bare curl, I stared at the JSON response for about thirty seconds. That's it? A POST request, a messages array, back comes a string of text. LangChain wraps01S
LWLeo Wanginleo-wang.hashnode.dev·Aug 3 · 1 min readYou Think You're Building AI Agents — You're Just Running a Demo Last year a friend's company shipped an internal "smart customer service Agent." Two weeks to a demo. The boss asked it questions, it answered every one. Applause. Ship it. Day three in production, it00
