News of the Claude Code source code leak has spread across the entire internet. Since the leak occurred on March 31, 2026, it has gone viral on Twitter, LinkedIn, and developer forums. Security researchers, open‑source enthusiasts, and curious developers have been sharing links, analyzing the exposed code, and even backing up the leaked files to their own GitHub repositories before takedown notices could remove them.
What started as a simple configuration mistake inside Anthropic’s npm package quickly turned into one of the biggest source code exposures in the AI tooling space. The leaked material includes the full TypeScript source of the proprietary Claude Code CLI—over 500,000 lines of code that reveal how the tool manages commands, coordinates multiple agents, handles permissions, and even some features that hadn’t been publicly announced yet.
Learn what happened, how Anthropic responded, and what it means for developers.
👇 Full breakdown:
https://www.thetimelens.org/blog/claude-code-source-code-leak-what-really-happened-and-why-it-matters
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