Coding agents and dev tools · Independent · 24 Oct 2026

TencentCloud/CubeSandbox

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

← Coding agents and dev tools
CubeSandbox: agent code execution. Instant secure sandboxes for artificial intelligence agents.

In simple English

When your artificial intelligence agent writes and runs code, you need a safe place where it cannot break your server. This tool creates a tiny, secure virtual machine in milliseconds. It isolates every task so the agent can safely test code or browse the web. You drop it in as a replacement for existing cloud sandbox tools. It needs a Linux server with hardware virtualization turned on.

What it is

CubeSandbox is a secure, lightweight sandbox service built on RustVMM and KVM. It boots micro-virtual-machines in under 60 milliseconds with minimal memory overhead.

What it is good for

Solo builders running autonomous artificial intelligence agents who need to execute untrusted code securely without heavy server overhead.

Stars13k
LicenceCustom
Latestv0.7.3 (2026-10-12)checked 24 Oct 2026
Last code change2026-10-23
Written inGo
Setup effort
4 / 5
Payoff
4 / 5
Good
  • Starts up in under sixty milliseconds, avoiding long cold starts.
  • Uses very little memory per sandbox, letting you run thousands on a single server.
  • Compatible with existing E2B software development kits for easy migration.
Watch for
  • Requires an x86_64 Linux server with kernel-based virtual machine support enabled.
  • Setting up a multi-node cluster demands advanced infrastructure knowledge.
  • Custom licence terms apply rather than a standard open-source licence.
Replaces

Heavy traditional virtual machines or standard Docker containers with shared kernel security risks

Works well with

OpenClaw or similar artificial intelligence agent frameworks

Similar repositories
  • e2b-dev/E2B15k stars

    A cloud-hosted sandbox platform for AI agents with a similar software development kit interface.

  • kata-containers/kata-containers9.0k stars

    A secure container runtime that uses lightweight virtual machines for hardware-level isolation.

Install
git clone https://github.com/TencentCloud/CubeSandbox.git
cd CubeSandbox
# Follow the quick start guide in docs/guide/quickstart.md for deployment options.

Independent: reviewed for Repo Radar outside the daily editions. Every independent repository

On Stack Radar: AI & Automation › AI Development & Evaluation › Agent Sandboxes.

Get the next edition in your inbox

A dozen repositories, opened and checked. The licence read, the last release dated, and the ones that did not make it named with the reason. It is the half most lists leave out.

No tracking pixels. One click to leave. The archive stays free either way.

We use your address to send the edition and nothing else. Confirm by email, leave in one click. How we handle it.