CubeSandbox
Runs self-hosted, KVM-isolated sandboxes for agent code execution behind an E2B-compatible API, with snapshots, cloning, auto-pause, and kernel-level network policy.
Skills
E2B-Compatible API
Accepts E2B SDK calls so existing E2B clients switch to a self-hosted cluster by changing one environment variable.
Snapshot Clone Rollback
Checkpoints running sandboxes with the CubeCoW copy-on-write engine, then rolls back to or forks from any saved state.
Network Policy And Vault
Filters egress per sandbox with eBPF and an L7 proxy that injects credentials, so API keys never enter the sandbox.
Auto Pause And Resume
Suspends idle sandboxes and wakes them on the next request, with cross-node pause and resume through an S3 backend.
Volume Framework
Mounts E2B-compatible volumes with pluggable storage backends that live independently and can be shared across sandboxes.
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