The @vercel/sandbox SDK now supports multiple Linux users and groups, so you can run agents side by side in a single Sandbox.

Each agent runs as its own user with a private home directory. A group opens a shared workspace when they need to collaborate. This makes multi-agent systems easier to build.

Call createUser for each agent; its commands and file operations run as that user, and users can't read, write, or list each other's files. To set up a shared directory, call createGroup and add users to it.

const sandbox = await Sandbox . create ( ) ;

const coder = await sandbox . createUser ( "coder" ) ;

const reviewer = await sandbox . createUser ( "reviewer" ) ;

// Each user is isolated to its own home directory

const cmd = await coder . runCommand ( "whoami" ) ;

console . log ( await cmd . output ( ) ) ;

// Share work through a group directory

await sandbox . createGroup ( "project" ) ;

await coder . addToGroup ( "project" ) ;

await reviewer .…