CubeSandbox

CubeSandbox is a high-performance, secure sandbox service built on RustVMM and KVM that provides hardware-level isolation for AI agents. It features sub-60ms cold start times and ultra-low memory overhead, allowing for high-density deployment on single or multi-node clusters. The platform is fully compatible with the E2B SDK, enabling developers to migrate existing projects with zero code changes.

CubeSandbox is a high-performance, secure sandbox service designed specifically for AI agents, leveraging RustVMM and KVM to provide hardware-level isolation. By utilizing resource pool pre-provisioning and snapshot cloning, it solves the challenge of high-latency sandbox initialization, enabling sub-60ms startup times. The architecture prioritizes extreme density and security, using eBPF for network isolation and a stripped-down runtime to maintain a minimal memory footprint of under 5MB per instance, making it a robust alternative to shared-kernel container approaches.