Anthropic accidentally leaks code for Claude Code

AI firm Anthropic experienced a significant internal error, accidentally exposing nearly 2,000 source code files and over 512,000 lines of code for its Claude Code product. This incident marks the second accidental data leak from the company in a week, following the exposure of internal documents. The leaked code represents the architectural blueprint for Claude Code, a tool that enables developers to use Anthropic's AI for code generation and editing, and has been a growing competitive force against rivals like OpenAI. While Anthropic described the event as a "release packaging issue caused by human error" and not a security breach, the exposed scaffolding could provide valuable insights to competitors.