Anthropic’s Second Major Leak in Days Exposes Internal Source Code for Breakout Claude Code Tool

Anthropic accidentally published a source map from Claude Code version 2.1.88 that revealed about 512,000 lines across 1,900 modules.

The company pulled the npm package, said no customer data or credentials were exposed, and called it a packaging error due to human mistake.

The leaked files were mirrored on GitHub within hours and are being examined for details about Claude Code’s memory, agents, and task orchestration.