512,000 lines of Claude Code's own CLI source code have leaked due to 'human error', but the company says 'no sensitive customer data or credentials' were exposed

CHONGQING, CHINA - DECEMBER 29: In this photo illustration, a person holds a smartphone displaying the logo of “Claude,” an AI language model by Anthropic, with the company’s logo visible in the background, illustrating the rapid development and adoption of generative AI technologies, on December 29, 2024 in Chongqing, China. Artificial Intelligence (AI) has become a cornerstone of China’s strategic ambitions, with the government aiming to establish the country as a global leader in AI by 2030.

Claude Code has become one of the modern darlings of the vibe coding revolution, being a terminal-based coding assistant that's been used for a raft of creative software projects, including a, err, game created by a dog.

Unfortunately for Anthropic, the company behind the AI coding whizz, the latest package also included a source map file—allowing access to its own command line interface (CLI) source code.