Node
Full-featured driver for server-side Node.js with real filesystem, networking, and child process support.
Browser
Browser-compatible driver with OPFS or in-memory filesystem and fetch-based networking.
System Drivers
System Drivers
Host capabilities provided to sandboxed runtimes.
A system driver defines what host capabilities a sandboxed runtime can access. It controls the filesystem, network, child process execution, and permission boundaries available to untrusted code.
All capabilities are deny-by-default. If you don’t configure a filesystem, sandboxed code has no file access. If you don’t configure a network adapter, it can’t make requests. Permissions provide fine-grained control over what operations are allowed even when a capability is present.