Michael Ballard | AI Software Engineering on Instagram: "Welcome to Day 5 of Master Building Software with LLMs in 30 Days. Here’s what every AI tutorial gets wrong: they jump straight to fancy UIs. But every successful LLM app started as a command-line tool first. Today we’re building a real text processor that solves problems. Python with requests or Node.js with axios. Three core functions: authenticate, process, validate. But here’s what separates beginners from builders: error handling. API