@nash_su: Last night I was chatting with @i5ting about how a sandbox is an indispensable part of any agent, and today Tencent open-sourced Cube Sandbox: 1. Blazing-fast boot (<60 ms) thanks to snapshot cloning and warm resource pools 2. Hardware-grade security via KVM micro-VMs + eBPF network isolation, battle-tested on Tencent Cloud 3. Ultra-high density—runs in <5 MB RAM, thousands per node 4. E2B-compatible
Summary
Tencent open-sources Cube Sandbox, a KVM-based micro-VM for agents that boots in <60 ms, runs in <5 MB RAM, and is E2B-compatible.
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Cached at: 04/23/26, 10:00 AM
Just last night I was chatting with @i5ting about how a sandbox is an indispensable part of any agent, and today Tencent open-sourced this Cube Sandbox:
- Blazing-fast boot (< 60 ms) — thanks to snapshot cloning and resource-pool pre-warming
- Hardware-grade security — KVM micro-VM + eBPF network isolation, battle-tested on Tencent Cloud
- Ultra-high density — < 5 MB RAM per instance, thousands on a single node
- E2B compatible
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