Claude-Code

The Claude Code Source Leak: Fake Tools, Frustration Regexes, and Undercover Mode When developers reverse-engineered Claude Code’s compiled JavaScript bundle, they didn’t just find a system prompt. They found a window into how Anthropic thinks about AI behavior at the most granular level: placeholder tools that exist to shape cognition rather than perform actions, regex patterns monitoring your emotional state, and an identity-concealment layer built for whitelabel deployments. This is what Anthropic didn’t put in the docs. ...

If you’ve been using Claude Code for any amount of time, you’ve probably noticed a mysterious .claude/ folder appearing in your projects. Most developers ignore it. That’s a mistake — understanding this folder is one of the highest-leverage productivity investments you can make. Today we’re breaking down exactly what’s inside, how to customize every piece of it, and why teams that configure it properly get dramatically better results from AI-assisted development. ...