It's just been revealed that Anthropic's Claude Code source code has been directly open-sourced; it's the code for their recently released CLI programming tool. The problem lies in the packaging process. When npm was released, the source map was included, resulting in the complete source code being directly decompiled—approximately 1900 files and 500,000 lines of code. Essentially, the entire client architecture is laid bare for everyone to see. Many developers are frantically downloading and studying it. This level of source code leak is like a college entrance exam answer key for anyone wanting to study how AI agents work. My advice: if you can download it, back it up immediately.