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    TencentCloud

    TencentCloud/CubeSandbox

    Instant, Concurrent, Secure & Lightweight Sandbox for AI Agents.

    backend
    agents
    container
    sandbox
    Go
    NOASSERTION
    13.2K stars
    1.2K forks
    13.2K GitHub watchers
    Updated Nov 4, 2026
    View on GitHub

    Build with Backblaze B2

    SDKs, agent skills, IDE extensions, and reference pipelines from Backblaze Labs. All open source.

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    5 releases in the last 90 days, the latest 23 days ago, with 118 contributors on GitHub.

    Peaked at #12 in the weekly ranking the week of Sep 13, its best in the past year.

    Use Cases & Benefits

    • Provides an instant, concurrent, secure, and lightweight sandbox service for AI agents using hardware-level isolation and KVM virtualization.
    • Delivers sub-60ms cold start times with ultra-low memory overhead under 5MB, enabling high-density deployment of thousands of sandboxes per node.
    • Use for securely running untrusted AI-generated code with strong kernel-level isolation to prevent container escape risks.
    • Use for scalable multi-node cluster deployments requiring fast sandbox provisioning and event-level snapshot rollback for state management.
    • Use for migrating from closed-source sandboxes to an open-source, E2B-compatible solution without changing existing business logic.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    Other

    GitHub could not identify this license; read the LICENSE file before depending on it.

    Community files

    • README: present
    • Contributing guide: present

    Watch-outs

    • License not identified by GitHub; read the LICENSE file before depending on it.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    Instant, Concurrent, Secure & Lightweight Sandbox Service for AI Agents

    Cube Sandbox is a high-performance, out-of-the-box secure sandbox service built on RustVMM and KVM. It supports both single-node deployment and easy scaling to multi-node clusters. It is compatible with the E2B SDK and can create a hardware-isolated, fully serviceable sandbox in under 60ms with less than 5MB of memory overhead.

    Excerpt from the TencentCloud/CubeSandbox README on GitHub (NOASSERTION license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Aug 8: +10Aug 20: +13Sep 2: +46Sep 3: +95Sep 4: +46Sep 5: +24Sep 6: +13Sep 7: +29Sep 8: +7Sep 13: +5Sep 16: +46Sep 17: +111Sep 18: -79Sep 19: +14Sep 20: +23Sep 21: +19Sep 22: +18Sep 23: +10Oct 10: +9Oct 11: +14Oct 12: +11

    +2,190 stars over 90 days across 30 snapshot days; best day +111 on Sep 17.

    Forks

    1.2K+185

    Open issues

    222+93

    Compared with peers in Backend

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

    View category →
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    TencentCloud/CubeSandbox13.2K—5923 days ago
    Category median94.7K+2.0K75—
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