sagar-jaixwal

Claude Code Clone — AI skill for Claude Code

AI community

On March 31, 2026, Anthropic accidentally published the entire source code of Claude Code - its flagship AI coding agent - inside an npm package.

How to install Claude Code Clone

This entry records only its repository, not the path inside it, so there is no exact command to give. Open sagar-jaixwal/claude-code-clone and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Claude Code Clone does

On March 31, 2026, Anthropic accidentally published the entire source code of Claude Code - its flagship AI coding agent - inside an npm package. No hack. No reverse engineering. A missing .npmignore entry shipped a 59.8 MB source map containing 512,000 lines of unobfuscated TypeScript across roughly 1,900 files.

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README

Claude Code Source Snapshot for Security Research

This repository mirrors a **publicly exposed Claude Code source snapshot** that became accessible on **March 31, 2026** through a source map exposure in the npm distribution. It is maintained for **educational, defensive security research, and software supply-chain analysis**.

Research Context

This repository is maintained by a **university student** studying:

software supply-chain exposure and build artifact leaks
secure software engineering practices
agentic developer tooling architecture
defensive analysis of real-world CLI systems

This archive is intended to support:

educational study
security research practice
architecture review
discussion of packaging and release-process failures

It does **not** claim ownership of the original code, and it should not be interpreted as an official Anthropic repository.

How the Public Snapshot Became Accessible

[Chaofan Shou (@Fried_rice)](https://x.com/Fried_rice) publicly noted that Claude Code source material was reachable through a `.map` file exposed in the npm package:

**"Claude code source code has been leaked via a map file in their npm registry!"**

— [@Fried_rice, March 31, 2026](https://x.com/Fried_rice/status/2038894956459290963)

The published source map referenced unobfuscated TypeScript sources hosted in Anthropic's R2 storage bucket, which made the `src/` snapshot publicly downloadable.

Repository Scope

Claude Code is Anthropic's CLI for interacting with Claude from the terminal to perform software engineering tasks such as editing files, running commands, searching codebases, and coordinating workflows.

This repository contains a mirrored `src/` snapshot for research and analysis.