Kubernetes Sandboxes for Browser-Based Vibe Coding

What it does Fulling is a self-hostable development platform that spins up isolated, browser-based sandboxes inside Kubernetes. Each project gets a dedicated PostgreSQL database, a web terminal via ttyd, a file manager, and Claude Code pre-installed as an AI pair programmer. You import from GitHub or start fresh, describe features in natural language, and the agent handles coding, testing, and one-click deployment to live HTTPS domains.

The interesting bit The platform pushes a “configuration-driven” model: you drop API keys for Stripe, OAuth, or other services into project settings, and Claude Code reads that config to generate the integration code automatically. The README also notes the entire codebase is 100% AI-generated, which is either a flex or a warning depending on your perspective.

Key highlights

• Each sandbox is an isolated Kubernetes StatefulSet with user-specific namespaces, resource limits (up to 4GB RAM and 2 CPU cores), and secrets stored in K8s secrets.
• Live HTTPS domains are provisioned automatically via ingresses with SSL termination—no ngrok, no port forwarding.
• Built on Next.js, Prisma, PostgreSQL, and shadcn/ui, with multi-provider OAuth (GitHub, Password, Sealos) protecting access.
• v2.0.0 is actively being rearchitected into an “Agentic app,” so the main branch is currently unstable.

Caveats

• Self-hosting demands a Kubernetes cluster with KubeBlocks, PostgreSQL, and GitHub OAuth credentials—this is infrastructure-heavy, not a quick local experiment.
• The v2 rewrite is in progress with breaking changes expected; the README explicitly directs stability-seekers to the v1.0.0 tag.
• “100% AI-generated code” is proudly claimed, which may inspire confidence or caution regarding long-term maintenance.

Verdict Worth a look if you want a private, Kubernetes-native alternative to managed cloud IDEs and are comfortable running KubeBlocks. Avoid if you need a turnkey SaaS experience or a stable API today.