Background

Anthropic, the creator of the Claude Code client, publicly shares the official Claude Code repository on GitHub to encourage bug reports and community contributions. Recently, a user named nirholas posted the leaked source code of the Claude Code client, prompting Anthropic to act to protect its intellectual property.

DMCA Notice and Initial Action

Anthropic submitted a DMCA notice to GitHub that targeted the repository containing the leaked code and identified roughly one hundred specific forks of that repository. In the notice, Anthropic alleged that the listed forks were infringing to the same extent as the original leaked repository.

Automated Overreach

GitHub’s automated processing interpreted the request as a request to take down a network of about 8,100 similar forked repositories. This broader action affected many repositories that did not contain the leaked code but were legitimate forks of Anthropic’s official public Claude Code repository. Those forks were created to support open‑source collaboration and did not violate any of Anthropic’s claims.

Community Reaction

Developers whose legitimate forks were removed voiced frustration on social media, noting that they had been swept up in a DMCA dragnet despite not sharing any leaked material. One coder, Robert McLaws, publicly criticized the action and announced plans to file a DMCA counter‑notice.

Anthropic’s Response and Resolution

By the following day, Anthropic contacted GitHub to clarify its request. The company asked GitHub to limit the takedowns to the 96 fork URLs specifically listed in the original notice and to reinstate all other repositories that had been disabled by the network‑wide processing. Boris Cherny, Anthropic’s head of Claude Code, explained on social media that the overzealous takedowns were “not intentional.” Thariq Shihipar, another Anthropic representative, described the incident as the result of “a communication mistake.” GitHub subsequently reversed the broad takedowns and restored the legitimate forks.

Implications

The incident highlights the challenges companies face when using DMCA notices to protect proprietary code in an ecosystem that heavily relies on forking and open collaboration. It also underscores the importance of precise communication with platforms that employ automated enforcement mechanisms.

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