Story perspectives

Anthropic Accidentally Exposes Claude Code's Source Code

4/1/2026

Summary

Story summary

Anthropic, the San Francisco-based AI company, accidentally exposed the entire source code of Claude Code due to a packaging error involving a source map file included in the npm package, revealing about 512,000 lines of TypeScript.
No sensitive customer data was compromised.
Developers and competitors can analyze Claude Code’s internals, and GitHub forks exceed 50,000.
Anthropic acknowledged the mistake and is implementing measures to prevent future occurrences.

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Story summary

Anthropic, the San Francisco-based AI company, accidentally exposed the entire source code of Claude Code due to a packaging error involving a source map file included in the npm package, revealing about 512,000 lines of TypeScript.
No sensitive customer data was compromised.
Developers and competitors can analyze Claude Code’s internals, and GitHub forks exceed 50,000.
Anthropic acknowledged the mistake and is implementing measures to prevent future occurrences.