# Nodepack

- **Event:** [Built with Opus 4.6: a Claude Code hackathon](https://cerebralvalley.ai/e/claude-code-hackathon)
- **When:** Feb 10 at 12:00 PM – Feb 17 at 10:00 AM (EST)
- **Where:** Location TBA
- **Team:** [Yangshun Tay](https://cerebralvalley.ai/u/yangshun)
- **GitHub:** https://github.com/yangshun/nodepack
- **Demo video:** https://www.youtube.com/watch?v=JqRwVltkIvo
- **Gallery:** https://cerebralvalley.ai/e/claude-code-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/claude-code-hackathon/hackathon/gallery/90

By using clever hacks like shimming Node.js APIs, an in-memory file system, and code transformation, we can run basic Node.js apps cost-effectively in the browser without containers or server-side sandboxes.

This enables new uses like interactive server-side JS playgrounds, in-browser AI coding agents, and AI-assisted coding interviews.

Nodepack uses QuickJS, Monaco editor, and Claude AI models.

Try Nodepack at https://nodepack.vercel.app.

Opus 4.6 Use: We used Opus 4.6 for research, planning, implementation, iteration, and as if that wasn’t enough, we also used it to power the AI coding agent in Nodepack.

Demo: Nodepack is functional, as demonstrated by the examples. While full Node.js parity is a massive effort, Nodepack proves what is possible with more time and resources.

---

Markdown version of https://cerebralvalley.ai/e/claude-code-hackathon/hackathon/gallery/90. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt