Analyzing Claude Code Source Code. Write "WTF" and Anthropic knows.

So I spent some time going through the Claude Code source, expecting a smarter terminal assistant. What I found instead feels closer to a fully instrumented system that observes how you behave while using it. Not saying anything shady is going on. But the level of tracking and classification is much deeper than most people probably assume. Here are the things that stood out. 1. It classifies your language using simple keyword detection This part surprised me because it’s not “deep AI understanding.” There are literal keyword lists.