Pre-built Templates

Available Templates

Lelantos provides six pre-built templates that cover the most common development and AI agent environments. These templates are ready to use immediately with no build step.

Template	Base	Description
`base`	Ubuntu 22.04	Minimal Linux environment with core utilities. Good starting point for custom workloads.
`python`	Python 3.12	Python runtime with commonly used libraries pre-installed (pip, setuptools, etc.).
`node`	Node.js 22	Node.js runtime with npm. Ready for JavaScript/TypeScript workloads.
`bun`	Bun	Bun runtime for fast JavaScript/TypeScript execution and package management.
`playwright`	Chromium	Browser testing environment with Playwright and Chromium pre-installed.
`code-interpreter`	Jupyter	Jupyter kernel for interactive code execution. Ideal for data analysis agents.

Usage Examples

base

The default template. Use it when you need a clean Linux environment:

const sandbox = await client.createSandbox({
  templateID: "base",
});

await sandbox.commands.run("apt-get update && apt-get install -y python3");

python

Pre-configured Python 3.12 environment:

const sandbox = await client.createSandbox({
  templateID: "python",
});

await sandbox.commands.run("pip install openai langchain");
const result = await sandbox.commands.run("python -c 'import sys; print(sys.version)'");
console.log(result.stdout); // 3.12.x

node

Node.js 22 with npm:

const sandbox = await client.createSandbox({
  templateID: "node",
});

await sandbox.commands.run("npm install express");
const result = await sandbox.commands.run("node -e 'console.log(process.version)'");
console.log(result.stdout); // v22.x.x

bun

Bun runtime for fast JS/TS execution:

const sandbox = await client.createSandbox({
  templateID: "bun",
});

const result = await sandbox.commands.run("bun --version");
console.log(result.stdout);

playwright

Browser automation with Chromium:

const sandbox = await client.createSandbox({
  templateID: "playwright",
});

await sandbox.uploadFile("/home/user/scrape.js", `
const { chromium } = require('playwright');
(async () => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  console.log(await page.title());
  await browser.close();
})();
`);

const result = await sandbox.commands.run("node /home/user/scrape.js");
console.log(result.stdout); // Example Domain

code-interpreter

Jupyter kernel for interactive code execution:

const sandbox = await client.createSandbox({
  templateID: "code-interpreter",
});

// Execute Python code via the Jupyter kernel
await sandbox.commands.run("python -c 'print(2 + 2)'");

All pre-built templates include DNS configuration and full internet access. They use the default resource allocation of 2 vCPU and 512 MB RAM. For different resource requirements, create a custom template.

Pre-built Templates

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