Claude Code's source code appears to have leaked: here's what we know

The leak provides competitors—from established giants to nimble rivals like Cursor—a literal blueprint for how to build a high-agency, reliable, and commercially viable AI agent.

Microsoft finally open sources DOS 1.0 - and it's so much more than the code

Microsoft finally open sources DOS 1.0 - and it's so much more than the code ...

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

The entire source code for Anthropic’s Claude Code command line interface application (not the models themselves) has been leaked and disseminated, apparently due to a serious internal error. The leak ...
Bleeping Computer

Claude Code source code accidentally leaked in NPM package

Anthropic says it accidentally leaked the source code for Claude Code, which is closed source, but the company says no customer data or credentials were exposed. While Anthropic pledges support to the ...

Anthropic took down thousands of GitHub repos trying to yank its leaked source code — a move the company says was an accident

Anthropic executives said it was an accident and retracted the bulk of the takedown notices.
InfoQ

Anthropic Accidentally Exposes Claude Code Source via npm Source Map File

Security researcher Chaofan Shou discovered on March 31 that Anthropic's Claude Code CLI tool had its full TypeScript source code sitting in plain sight on the public ...
Dark Reading

Claude Source Code Leak Highlights Big Supply Chain Missteps

Sophisticated cyberattacks targeting a variety of open source projects, including the Trivy security-scanner project, the widely used Axios Javascript package, and now Anthropic's accidental ...