Tencent's CubeSandbox v0.7.0 turns AI agent sandboxes into cluster-level assets
future_coded · x · 2026-09-08
Tencent Cloud's open-source CubeSandbox (a secure sandbox service for AI agents, 11.9k GitHub stars) shipped v0.7.0, shifting sandboxes from node-pinned to cluster-level assets:
- Live migration: pause a sandbox on node A and resume on node B with state intact and zero restart; snapshot once and clone onto any node with capacity; drain nodes for maintenance without killing workloads.
- Component multi-version coexistence: nodes keep historical component versions so old templates and snapshots keep working through upgrades, cutting production disruption risk.
- Under-the-hood wins: faster network policy setup (less control-plane chatter, optimized eBPF path), separated control plane and ops, better tap device handling under high concurrency.
Built on RustVMM and KVM with real hardware isolation, open-source and self-hostable, e2b-compatible. Useful for agent training, parallel task runs, and anything that pauses and resumes constantly.
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