Claude Code

Claude Code — Leaked Source

The full source code of Anthropic's Claude Code CLI, leaked on March 31, 2026
The original unmodified leaked source is preserved in the backup branch.

The X-Ray Intelligence Engine for Your Codebase.

Understand Any CodebaseX-Ray Any Repo, in Seconds.
repoxray.2clabs.tech

Spend less time reading code, more time building.

Table of Contents

- How It Leaked
- What Is Claude Code?
- Documentation
- Explore with MCP Server
- Directory Structure
- Architecture
  - Tool System
  - Command System
  - Service Layer
  - Bridge System
  - Permission System
  - Feature Flags
- Key Files
- Tech Stack
- Design Patterns
- GitPretty Setup
- Contributing
- Disclaimer

How It Leaked

Chaofan Shou (@Fried_rice) discovered that the published npm package for Claude Code included a .map file referencing the full, unobfuscated TypeScript source — downloadable as a zip from Anthropic's R2 storage bucket.
"Claude code source code has been leaked via a map file in their npm registry!"
— @Fried_rice, March 31, 2026

What Is Claude Code?

Claude Code is Anthropic's official CLI tool for interacting with Claude directly from the terminal — editing files, running commands, searching codebases, managing git workflows, and more. This repository contains the leaked src/ directory.

� Documentation

For in-depth guides, see the docs/ directory:

Also see: CONTRIBUTING.md · MCP Server README

�🔍 Explore with MCP Server

This repo ships an MCP server that lets any MCP-compatible client (Claude Code, Claude Desktop, VS Code Copilot, Cursor) explore the full source interactively.

Install from npm

The MCP server is published as warrioraashuu-codemaster on npm — no need to clone the repo:

One-liner setup (from source)

Step-by-step setup

Replace…