Comment "KARPATHY" and I'll send you the repo There's a single file on GitHub with 170,000 stars that makes Claude noticeably smarter the second you install it. It's called Behavioral Skills Claude md Drop it into your project, and Claude stops doing the four things every Claude user complains about. Over-engineering simple tasks. Ignoring your instructions. Marking things complete when they're not. Hallucinating fake APIs. #claudecode #claudeai #anthropic #karpathy #github #aitools #aifornontechies