Embedded, lightweight micro-VM runtime for AI agents running OCI containers with hardware-level isolation — built for high concurrency, no daemon required.
What is BoxLite?
BoxLite lets you spin up lightweight VMs ("Boxes") and run OCI containers inside them. It's designed for use cases like AI agent sandboxes and multi-tenant code execution, where Docker alone isn't enough and full VM infrastructure is too heavy.
Why BoxLite
- Lightweight: small footprint, fast-starting Boxes, minimal operational overhead.
- High concurrency: async-first API designed to run many Boxes in parallel; stream stdout/stderr.
- Hardware isolation: each Box has its own kernel (not just namespaces).
- Embeddable: link a library; no root; no background service to manage.
- OCI compatible: use Docker/OCI images (
python:slim,node:alpine,alpine:latest).
Python Quick Start
View guide
Install
Requires Python 3.10+.
Run
import asyncio import boxlite async def main(): async with boxlite.SimpleBox(image="python:slim") as box: result = await box.exec("python", "-c", "print('Hello from BoxLite!')") print(result.stdout) asyncio.run(main())
Node.js Quick Start
View guide
Install
npm install @boxlite-ai/boxlite
Requires Node.js 18+.
Run
import { SimpleBox } from '@boxlite-ai/boxlite'; async function main() { const box = new SimpleBox({ image: 'python:slim' }); try { const result = await box.exec('python', '-c', "print('Hello from BoxLite!')"); console.log(result.stdout); } finally { await box.stop(); } } main();
Rust Quick Start
View guide
Install
[dependencies] boxlite = { git = "https://github.com/boxlite-ai/boxlite" }
Run
use boxlite::{BoxCommand, BoxOptions, BoxliteRuntime, RootfsSpec}; use futures::StreamExt; #[tokio::main] async fn main() -> Result<(), Box<dyn std::error::Error>> { let runtime = BoxliteRuntime::default_runtime(); let options = BoxOptions { rootfs: RootfsSpec::Image("alpine:latest".into()), ..Default::default() }; let litebox = runtime.create(options, None).await?; let mut execution = litebox .exec(BoxCommand::new("echo").arg("Hello from BoxLite!")) .await?; let mut stdout = execution.stdout().unwrap(); while let Some(line) = stdout.next().await { println!("{}", line); } Ok(()) }
Next steps
- Run more real-world scenarios in Examples
- Learn how images, disks, networking, and isolation work in Architecture
Features
- Compute: CPU/memory limits, async-first API, streaming stdout/stderr, metrics
- Storage: volume mounts (ro/rw), persistent disks (QCOW2), copy-on-write
- Networking: outbound internet, port forwarding (TCP/UDP), network metrics
- Images: OCI pull + caching, custom rootfs support
- Security: hardware isolation (KVM/HVF), OS sandboxing (seccomp/sandbox-exec), resource limits
- Image Registry Configuration: Configure custom registries via config file (
--config), CLI flags (--registry), or SDK options. See the configuration guide. - SDKs: Python (stable), Node.js (v0.1.6); Go coming soon
Architecture
High-level overview of how BoxLite embeds a runtime and runs OCI containers inside micro-VMs. For details, see Architecture.
Show diagram
┌──────────────────────────────────────────────────────────────┐
│ Your Application │
│ ┌───────────────────────────────────────────────────────┐ │
│ │ BoxLite Runtime (embedded library) │ │
│ │ │ │
│ │ ╔════════════════════════════════════════════════╗ │ │
│ │ ║ Jailer (OS-level sandbox) ║ │ │
│ │ ║ ┌──────────┐ ┌──────────┐ ┌──────────┐ ║ │ │
│ │ ║ │ Box A │ │ Box B │ │ Box C │ ║ │ │
│ │ ║ │ (VM+Shim)│ │ (VM+Shim)│ │ (VM+Shim)│ ║ │ │
│ │ ║ │┌────────┐│ │┌────────┐│ │┌────────┐│ ║ │ │
│ │ ║ ││Container││ ││Container││ ││Container││ ║ │ │
│ │ ║ │└────────┘│ │└────────┘│ │└────────┘│ ║ │ │
│ │ ║ └──────────┘ └──────────┘ └──────────┘ ║ │ │
│ │ ╚════════════════════════════════════════════════╝ │ │
│ └───────────────────────────────────────────────────────┘ │
└──────────────────────────────────────────────────────────────┘
│
Hardware Virtualization + OS Sandboxing
(KVM/Hypervisor.framework + seccomp/sandbox-exec)
Security Layers:
- Hardware isolation (KVM/Hypervisor.framework)
- OS-level sandboxing (seccomp on Linux, sandbox-exec on macOS)
- Resource limits (cgroups, rlimits)
- Environment sanitization
Documentation
- API Reference — Coming soon
- Examples — Sample code for common use cases
- Architecture — How BoxLite works under the hood
Supported Platforms
| Platform | Architecture | Status |
|---|---|---|
| macOS | Apple Silicon (ARM64) | ✅ Supported |
| Linux | x86_64 | ✅ Supported |
| Linux | ARM64 | ✅ Supported |
| Windows (WSL2) | x86_64 | ✅ Supported |
| macOS | Intel (x86_64) | ❌ Not supported |
System Requirements
| Platform | Requirements |
|---|---|
| macOS | Apple Silicon, macOS 12+ |
| Linux | KVM enabled (/dev/kvm accessible) |
| Windows (WSL2) | WSL2 with KVM support, user in kvm group |
| Python | 3.10+ |
Getting Help
- GitHub Issues — Bug reports and feature requests
- Discord — Questions and community support
Contributing
We welcome contributions! See CONTRIBUTING.md for guidelines.
License
Licensed under the Apache License, Version 2.0. See LICENSE for details.