Vercel Sandbox Adds Multi-User Isolation So Several Agents Can Share One Sandbox
Vercel Changelog·medium signal
The @vercel/sandbox SDK now supports multiple Linux users and groups, letting agents run side by side in a single Sandbox with each agent getting its own user and private home directory, plus a group for controlled shared access. This is a direct cost and cold-start play for multi-agent systems that previously had to provision one sandbox per agent to get filesystem isolation. Practical for anyone running parallel coding agents where per-agent VM overhead was the bottleneck.