Entire Claude Code CLI source code leaks thanks to exposed map file

Early this morning, Anthropic published version 2.1.88 of Claude Code npm package—but it was quickly discovered that package ...

Anthropic confirms it leaked Claude Code source code — spilling some of its biggest secrets

Claude Code's entire source code has been leaked and the internet is up in arms.

Anthropic's AI coding tool leaks its own source code for the second time in a year

A researcher flagged the issue on 31 March 2026, and the code has since been archived on multiple public repositories, ...
Decrypt

Anthropic Accidentally Leaked Claude Code's Source—The Internet Is Keeping It Forever

Anthropic is scrambling to contain the leak, but the AI coding agent is spreading far and wide and being picked apart.
The Business Standard

Claude’s source code got leaked — and Anthropic is scrambling to contain it

The accidental release of Claude Code’s source files has opened a window into how Anthropic directs its AI, and how others might now follow ...
The Information

Anthropic’s Coding Agent Source Code Exposed in Leak

Anthropic mistakenly leaked some of the source code underlying its Claude Code application, the company said on Tuesday. The leak revealed new details about how the popular AI coding tool works and ...
WinBuzzer

Anthropic Leaks Claude Code Source via Npm Source Map

Anthropic has accidentally exposed Claude Code's full 512,000-line TypeScript source via an npm source map, revealing ...

Anthropic source code leak: Claude Code files exposed in second security lapse within days ...

Anthropic confirmed a leak of Claude Code source files due to a packaging error, exposing internal systems and raising ...