Show HN: Mitos – N-way live copy-on-write fork of running Firecracker microVMs (github.com)

Mitos has introduced a new runtime that allows N-way live copy-on-write forking of Firecracker microVMs in Kubernetes, enabling quick and isolated environments for AI agents. This open-source, self-hostable solution addresses limitations in existing options by offering high-speed operation with ownership over the infrastructure, as well as the capability for agents to execute untrusted code, manage files, and install packages without sacrificing isolation or durability. Significantly, Mitos boasts a P50 activation time of approximately 27 milliseconds, achieved through a clever architecture that allows snapshots of running VMs to be restored and forked in real-time. The system operates under Kubernetes with declarative Custom Resource Definitions (CRDs), enabling users to maintain control over their data while benefiting from features like warm claims, autoscaling, and durable workspaces. Its ability to mitigate cold start times and provide flexible resource management makes Mitos an appealing choice for developers seeking efficient and secure sandboxes for AI applications.