Anthropic issues DMCA takedown notices for 8,100 repositories, and the leaked source code v2.1.88 has been withdrawn from npm.

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According to monitoring by 1M AI News, Anthropic has submitted a DMCA copyright protection notice to GitHub regarding the source code leak of Claude Code. GitHub has expanded the takedown scope to the entire fork network; a total of 8,100 repositories have been banned from public access, including the parent repository nirholas/claude-code and all of its forks. The DMCA notice is signed by Anthropic’s authorized representative for intellectual property, stating that “the entire repository constitutes infringement.”

Meanwhile, v2.1.88, which includes a source map, has been withdrawn from npm, with the version number jumping directly from v2.1.87 to v2.1.89. This version previously accidentally shipped about 60MB of source map files due to a build error, from which all TypeScript source code could be reconstructed.

This is not the first time Anthropic has used the DMCA. When Claude Code was first released in February 2025, the community extracted the source code because it included a source map, and Anthropic subsequently filed its first DMCA notice with GitHub in April 2025. The triggering reason for this leak is the same (the npm package accidentally included a source map), but the scale of fork propagation far exceeds the last time; the takedown count of 8,100 repositories reflects a significant increase in Claude Code’s user base over the past year.

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