On March 31, 2026, the full source code of Anthropic's Claude Code CLI was leaked via a .map file exposed in their npm registry.

Brane Code) is now taking this ahead. It's like Claude Code but works with all top models like Openrouter & OpenAI. And yeah, it works with all free models as well on Openrouter.

Good luck and all the best! Visit Brane Code and keep building.

This repository archives source code that was leaked from Anthropic's npm registry on 2026年03月31日. All original source code is the property of Anthropic.