Environments

Each sandbox is a pre-built Linux image. Pick the flavor that fits your workload.

Available flavors

Flavor	Preinstalled
python-3.12	Python 3.12, pip, numpy, pandas, requests, git
node-20	Node.js 20, npm, yarn, git
browser	Chromium, Playwright, xvfb, Python 3.12
full	Everything above + jq, ffmpeg, ImageMagick

The default flavor is python-3.12.

Resource limits

Setting	Default	Maximum
Memory	512 MB	8192 MB
vCPU	1	4
TTL	60 min	480 min

Specifying a flavor

TypeScript

const sb = await Sandbox.create({ flavor: 'node-20' });
const sb = await Sandbox.create({ flavor: 'browser', memory: 2048 });

// or with using()
await Sandbox.using(async (sb) => {
  // ...
}, { flavor: 'full', memory: 4096, cpu: 2 });

Python

sb = Sandbox.create("node-20")
sb = Sandbox.create("browser", memory=2048)
sb = Sandbox.create("full", memory=4096, cpu=2)

Installing additional packages

You can install anything at runtime with exec(). The install persists for the lifetime of that sandbox.

# Python packages
pip install scikit-learn torch transformers

# Node packages
npm install axios cheerio

# System packages
apt-get install -y curl build-essential

Sandbox lifetime

Sandboxes are deleted when:

• You call delete() or exit the context manager / using() block
• The TTL expires (default 60 minutes)
• The sandbox encounters a fatal error

Nothing persists between sandboxes. Each one starts from a clean image.