yasasbanukaofficial/claude-code
2,233 stars · Last commit 2026-04-04
🚀 Open source Claude Code CLI source code. Advanced AI Agent for developers. Includes TypeScript codebase for LLM tool-calling, agentic workflows, and terminal UI. Remember this is just the skeleton not the brain itself. Found by Chaofan Shou.
README preview
# Claude Code's Entire Source Code Got Leaked via a Sourcemap in npm, Let's Talk About It > **PS:** This breakdown is also available on [this blog](https://kuber.studio/blog/AI/Claude-Code's-Entire-Source-Code-Got-Leaked-via-a-Sourcemap-in-npm,-Let's-Talk-About-it) with a better reading experience and UX :) > **Note:** There's a non-zero chance this repo might be taken down. If you want to play around with it later or archive it yourself, feel free to **fork it** and bookmark the external blog link! --- ## ⚠️ Important Disclaimer **I did not leak these files.** I have simply provided an easy, documented way to access and study this codebase for research purposes. All files and information originate from public findings shared on Twitter/X. All credit for the discovery goes to the original source. --- Earlier today (March 31st, 2026) - **Chaofan Shou (@Fried_rice)** discovered something that Anthropic probably didn't want the world to see: the **entire source code** of Claude Code, Anthropic's official AI coding CLI, was sitting in plain sight on the npm registry via a sourcemap file bundled into the published package. [](https://x.com/Fried_rice/status/2038894956459290963) This repository is a backup of that leaked source, providing a full breakdown of what's in it, how the leak happened, and the internal systems that were never meant to be public.