Source material powering Anthropic's Claude Code leaked for the second time in just over a year, publicly exposing the AI coding tool's full architecture, unreleased features and internal model performance data.

A routine software update for Anthropic's Claude Code tool accidentally leaked its entire source code, sparking rapid community response.

While Anthropic insists no sensitive user data was compromised, the leak has sparked intense interest across the developer community and raised fresh questions about operational security.