Anthropic Accidentally Leaked Claude Code's Entire Source Code — 512,000 Lines, 44 Hidden Features
1 Apr | 11 min read | AI & Intelligence
On March 31, 2026, Anthropic shipped a 59.8MB source map file with Claude Code v2.1.88 on npm, exposing 512,000 lines of proprietary TypeScript. Here's what the leak revealed: KAIROS daemon mode, 44 unreleased features, the memory architecture, and an npm supply chain attack that ran concurrently.
