Working in the MicroVM

mvmctl is the local sandbox management surface. It builds images, boots microVMs, runs commands, transfers files, forwards ports, captures logs, and moves sandboxes through pause, cold, resume, stop, and destroy-style workflows.

Common lifecycle

mvmctl build ./my-app
mvmctl up ./my-app --name agent-sandbox
mvmctl exec agent-sandbox -- python /work/task.py
mvmctl logs agent-sandbox -f
mvmctl down agent-sandbox

Management tasks

Task	Start here
Understand sandbox states and transitions	Lifecycle states
Run commands and processes	Run commands & processes
Move files across the host/guest boundary	Filesystem operations
Expose services or constrain egress	Network & exposing ports
Keep state across runs	Persistence, pause & resume
Save and recover machine state	Cold mode and Snapshots

Security posture

• Build inputs are materialized before runtime launch.
• Runtime guests boot through explicit backend selection and local admission.
• Guest operations go through the control plane rather than broad host access.
• Logs, file transfer, and snapshots can carry sensitive data and should be handled as such.
• Network access should be explicit for agent and browser workloads.

Local first

The local workflow should be complete on its own: build, launch, inspect, debug, pause, recover, and remove state from the host you control. Hosted or fleet layers can build on the same semantics later, but the local management commands are the baseline.