Deyi's WorkshopNotes on AI engineering, agents, and building things.https://deyi.dev/Why Your RAG Pipeline Is Lying to Youhttps://deyi.dev/blog/why-your-rag-pipeline-is-lying/https://deyi.dev/blog/why-your-rag-pipeline-is-lying/Retrieval is not understanding.Tue, 10 Mar 2026 00:00:00 GMTBuilding Agents That Actually Workhttps://deyi.dev/blog/building-agents-that-work/https://deyi.dev/blog/building-agents-that-work/Less autonomy, more reliability.Tue, 24 Feb 2026 00:00:00 GMTThe MCP Server I Use Every Dayhttps://deyi.dev/blog/mcp-server-i-use-every-day/https://deyi.dev/blog/mcp-server-i-use-every-day/A love letter to tool-use protocols.Mon, 15 Dec 2025 00:00:00 GMTContext Windows Are the New Memoryhttps://deyi.dev/blog/context-windows-are-new-memory/https://deyi.dev/blog/context-windows-are-new-memory/What happens when your AI forgets.Thu, 02 Oct 2025 00:00:00 GMTFrom Railway Engineer to AI Engineerhttps://deyi.dev/blog/from-railway-to-ai-engineer/https://deyi.dev/blog/from-railway-to-ai-engineer/A career pivot story.Fri, 12 Jul 2024 00:00:00 GMTLangChain Considered Harmful (Sometimes)https://deyi.dev/blog/langchain-considered-harmful/https://deyi.dev/blog/langchain-considered-harmful/When abstractions fight back.Fri, 05 Apr 2024 00:00:00 GMT