sandboxed The open-source engine for AI app-builder products. Give every user an isolated cloud dev environment, a built-in coding agent, and a live preview URL — self-hosted, on one machine, in one command. What is sandboxed? (start here) Think of the apps where you type "build me a todo app" and seconds later a working website appears at its own link — like Lovable, Bolt, v0, or Replit. sandboxed is the open-source backend that makes that possible , running on your own server. Here's what it does, in plain terms. You send it one HTTP request, and it: Creates a sandbox — a private, isolated Linux container (its own filesystem, its own memory limits), so one user's code can never see or break another's. Runs an AI coding agent inside it — you give it a prompt, and it writes the code into that sandbox. (The OpenCode and Claude Code CLIs come pre-installed.) Gives the app a live URL — the dev server running inside the sandbox is instantly reachable at a shareable preview link. .preview...…