Welcome to LIFAN DEV

My personal playground for technology experiments, developer tools, and management functions.

Economic Concept Visualizer →

Interactive simulation of basic economic principles using React Islands.

Learn accounting from scratch with interactive lessons, calculators, and real-world scenarios.

Twelve focused labs on production AI agent engineering: messages, schemas, tools, the loop, retrieval, MCP, evals, approvals, and operations.

More tools coming soon...