A reference implementation built from everything we’ve learned helping agent platforms scale. Use it, fork it, remix it.

Neon

app.build is an open-source AI agent that automatically builds and deploys full-stack applications with end-to-end testing and automated deployments. The tool can be started with a simple npx command, creates GitHub repositories, and deploys apps with authentication, databases, and hosting infrastructure. The agent uses a divide-and-conquer approach, breaking app creation into smaller tasks with quality checks at each step to ensure working applications.

app.build: An Open-Source AI Agent That Builds Full-Stack Apps