THE CLAUDE CODE SOURCE LEAK: FAKE TOOLS, FRUSTRATION REGEXES, UNDERCOVER MODE, AND MORE

Summary from the TLDR Dev newsletter

This post analyzes the full source code of Anthropic's Claude Code, which was leaked via an npm package source map and revealed internal features like anti-distillation methods and a strategic product roadmap. While the leak exposed unreleased agent modes and client attestation plans, the real value lies in the revealed competitive intelligence rather than the code itself.