CubeSandbox @CubeSandbox

🚀 CubeSandbox performance benchmark report is live! Real-world tests on PVM cloud servers: • Snapshot: 41ms • Rollback: 90ms • Clone: 271ms → 40ms (amortized at 10 concurrency) Full benchmark data + reproducible commands included. Give it a read 👉 cubesandbox.com/blog/posts/202…

That last question is the one we obsess over. Our bet: in the agent era, sandboxes stop being disposable scratch space and become stateful — save, fork, rewind. v0.3.0 is our first step. The 70ms snapshot & 99.5% less I/O aren't the point — they're what make "treat state as a first-class primitive" actually practical. What would you build if every agent had a save button? 👇

Your AI agent just nuked its own sandbox? Cool — blink, and it's back to the moment before things went sideways. A month ago Tencent Cloud open-sourced Cube Sandbox, a microVM-isolated runtime for AI agents. Today's update lands the trio we're most excited about: snapshot, clone, rollback — essentially a time machine and a clone trick for your agent. Checkpoint when the sandbox is healthy, let the agent do whatever, rollback to rewind on failure, or clone to fan out dozens of fully-isolated copies in seconds. Sub-100 ms rollback, dozens of clones in seconds. Same sandbox_id — the agent just keeps going. Shipping alongside it: a "Lobster" WebUI that turns checkpoint timelines, time-travel, and one-to-many cloning into a few mouse clicks. Coming next: built-in high-performance content-aware network control and credential vaulting — so you don't just isolate where the agent runs, you control what it can reach. E2B-compatible. Self-hostable on a normal CVM. ⭐ if it helps. github.com/TencentCloud/C…

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Cube Sandbox now has a blog 📝 We're looking for guest posts — anything around AI agent sandboxes, isolated runtimes, agent infra, or war stories from running agents in production. DM me if you'd like to write something. cubesandbox.com/blog/

🎉 CubeSandbox v0.2.2 is out. What changed since v0.2.0: 🔌 E2B compatibility now reaches the protocol layer — default port aligned to 49983. Switching from E2B? You won't even touch your proxies or firewall rules. 🛠️ A batch of top user-reported stability issues fixed: cubecli exec panic on EOF, duplicate template image jobs, PVM ext4 materialization, configurable storage timeouts. 📦 Quick-start image trimmed from 4 GB → ~100 MB. Overseas mirror now live. 🛡️ First round of CVE handling for the v0.2 series. Full notes 👉 github.com/TencentCloud/C…

Great to see Sandboxes officially launched! 🚀 Cube Sandbox, an open-source project from Tencent Cloud, is a high-performance sandbox built on RustVMM + KVM with 60ms cold start and hardware-level isolation. Perfect for LLM agent code execution. Would love to be added to your supported sandbox list! github.com/CubeSandbox/Cu…

Hello everyone, Cube Sandbox is still missing the docs that would help the next 50,000 devs ship faster. So we're opening it up — write a troubleshooting note, a use case, or a framework integration guide. We'll send you: 🏅 Official contributor cert 🌟 A permanent spot on our Wall of Contributors 📚 Early access to upcoming releases 👑 1:1 chats with the core team for top contributors Pick a task → ship a PR. That's it. 🔗 github.com/TencentCloud/C…

@wuhan005 For details on how to use it with a CVM, please refer to: docs.cubesandbox.ai/guide/pvm-depl…

CubeSandbox v0.2.0 has just been released! The PVM deployment mode is now officially available 🎊 The question that everyone had repeatedly asked before, "Can it be run on a regular cloud server?" - It's now ready. ✅ No need for bare metal or nested virtualization. A regular CVM can launch the Cube sandbox. ✅ One-click script installation, supported by mainstream OS distributions such as DEB and RPM series. ✅ Tencent Cloud has conducted production-level large-scale verification and has made it open-source in the OpenCloudOS kernel. In the future, it can support direct installation via yum install on OpenCloudOS. ✅ The Web console has been launched simultaneously, providing visualizations for clusters, sandboxes, and templates. PVM Deployment Guide: docs.cubesandbox.ai/guide/pvm-depl… Project Changelogs (Details of Version 0.2.0 Updates):github.com/TencentCloud/C…

@tencentcloud i'm here😁

Today, Tencent Cloud officially open-sources Cube Sandbox! (github.com/TencentCloud/C…) Built on RustVMM and KVM, it is a high-performance, out-of-the-box secure sandbox service. Refined and battle-tested in Tencent Cloud’s production environments for years with massive workloads, it solves core challenges including slow startup, rigid deployment, and high migration costs (E2B-compatible).

@TencentAI_News i'm here, hahaha😜

🥳We just open-sourced Cube Sandbox! An instant, concurrent, secure and lightweight sandbox runtime for AI Agents. Built with RustVMM and KVM, it achieves the perfect balance of security and performance: → Sub-60ms cold start (2.5-50x faster) → Under 5MB memory overhead per instance (6x less memory) → Dedicated kernel per sandbox (hardware-level isolation) → Thousands of concurrent sandboxes per node → 100% E2B SDK compatible. Swap the endpoint, zero code changes Full-stack capability, one-click deployment. 3 steps to spin up your own private AI sandbox 👇 🔗 github.com/TencentCloud/C…

Hello everyone, this is the official X account of Cube Sandbox. Welcome to follow and talk about it.Thanks to @e2b for its pioneering role in Agent Sandbox, as well as its excellent SDK and thriving ecosystem. github.com/TencentCloud/C…