Show HN: App.build, an open-source AI agent that builds full-stack apps

app.build generates real apps from scratch on top of the Neon platform. Generated apps use Neon Postgres, Neon Auth and other incoming Neon features.

It is fully open source, local-first, and built for developers. It serves as a reference implementation for any codegen product looking to build on top of Neon.

Learn more in our launch blog post.