Show HN: VibeBox – an ultrafast macOS sandbox for AI agents

[robcholz]

Hi HN! I built VibeBox because running agents locally was either risky, or endlessly interrupted by “allow/deny” prompts. I want agents to run commands, edit files, and execute code freely without touching my real machine.

VibeBox runs the agent inside a fully isolated Linux VM via Apple’s Virtualization Framework, so the host stays sealed off while the agent can work without permission spam.

GitHub: https://github.com/robcholz/vibebox

What it does:

> One command drops you into a Debian VM that mounts your project read-write

> Configuration is simple: vibebox.toml sets CPU/RAM/disk and mounts.

> Warm startup is typically < 6 seconds on my M3, so jumping in/out is fast.

[robcholz]

Would love feedback on the threat model + default mount session UX :)