Claude Code source code accidentally released.

Anthropic, the makers of Claude Code, has accidentally released source code on Github. Anthropic public v2.1.88 on March 31, 2026 but with a full debugging file “cli.js.map” and about 500,000 lines of source code. Within hours a Korean programmer has a copy of the source code, and is converting it to Python, and calling it “claw-code”. Reports mention that “within hours” the Python conversion was done, but as a programmer, I doubt he has a releasable product.

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Jeremy@Jeremybtc

Anthropic accidentally leaked their entire source code yesterday. What happened next is one of the most insane stories in tech history. > Anthropic pushed a software update for Claude Code at 4AM. > A debugging file was accidentally bundled inside it. > That file contained

8:30 PM · Mar 31, 2026 · 3.66M Views

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Repo from Sigrid Jin in Korea aka “instructkr”. https://github.com/instructkr/claw-code

This Github repo from Sigrid Jin appears to have been forked (copied) many times. It’s not clear how Anthropic lawyers will handle this since it was Anthropic’s fault the source code was released. We’ll see in the coming months what happens with all these forks of the code.