Vibe: a lightweight virtual machine tool for running LLM agents in a sandbox on ARM-based Macs

The creator built Vibe after discovering that OpenAI's Codex agent could read files outside its intended project directory, prompting a search for a Mac-based sandbox that uses actual VMs rather than containers and requires no external servers or subscriptions.

Vibe launches a Linux virtual machine in ~10 seconds, automatically mounts the folder as a shared directory, caches common package registries (Cargo, Maven, mise-en-place) to avoid re-downloads, and ships as a binary under 1 MB with no dependencies.

The tool supports running LLM agents with root access and a `--yolo` mode, while remaining customizable via scripts and command-line flags for other virtual machine use cases beyond agent sandboxing.