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Oopsies.
arstechnica.com
Entire Claude Code CLI source code leaks thanks to exposed map file
512,000 lines of code that competitors and hobbyists will be studying for weeks.
arstechnica.com
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 gives competitors and armchair enthusiasts a detailed blueprint for how Claude Code works—a significant setback for a company that has seen explosive user growth and industry impact over the past several months.
Early this morning, Anthropic published version 2.1.88 of Claude Code npm package—but it was quickly discovered that package included a source map file, which could be used to access the entirety of Claude Code’s source—almost 2,000 TypeScript files and more than 512,000 lines of code.






