smolvm

The smolvm connector adapts an initialized Machine from smolvm-embedded into Flue’s sandbox interface. Unlike a hosted sandbox service, smolvm runs locally through a host hypervisor.

Add the connector

pnpm exec flue add smolvm

Requirements

Requirement	Value
Provider package	smolvm-embedded
Supported host shape	macOS or Linux host with suitable virtualization support
Credential	None required by smolvm itself
Unsupported runtime	Edge/Worker runtimes without local hypervisor execution

Choose this connector when

Use smolvm for trusted desktop, CI, or server environments where local microVM execution is the desired isolation boundary. The host running the Flue application must support the underlying virtualization mechanism; this is not a Cloudflare Worker sandbox option.

The connector recipe treats networking and machine lifetime as explicit choices. Do not assume a local VM has network access or that it will be cleaned up without your application doing so.

See Deploy on Node.js, Sandboxes, and Sandbox Connector API.