E2B (13,266 Stars) 2026: Secure Cloud Sandboxes for AI Agents - Run Untrusted Code Safely

E2B (13,266 stars) provides secure cloud sandboxes for AI agents to run code safely - perfect for agent tool use, code execution and browser automation. Here is how to use it.

💡 What You Will Learn

E2B (13,266 stars) provides secure cloud sandboxes for AI agents to run code safely - perfect for agent tool use, code execution and browser automation. Here is how to use it.

📜 Table of Contents

• The short answer
• Why agents need sandboxes
• Quick start
• Common agent patterns
• Practical tips
• FAQ

The short answer

e2b-dev/e2b (13,266 stars, TypeScript) is an open-source infrastructure for AI agents: secure cloud sandboxes where agents can execute code, run tools, and automate browsers without touching your production environment. Each sandbox is an isolated microVM that boots in milliseconds and is destroyed when done.

Why agents need sandboxes

• Safety: generated code runs in isolation - it cannot touch your host
• Statefulness: keep a filesystem and processes alive across agent steps
• Browser automation: run Playwright inside the sandbox for web agents
• Cleanup: sandboxes are ephemeral - no lingering containers or VMs

Quick start

npm install e2b

import { Sandbox } from "e2b";

const sandbox = await Sandbox.create();

const result = await sandbox.commands.run(
  "python3 -c 'print(40 + 2)'"
);
console.log(result.stdout); // 42

await sandbox.close();

Or use the Python SDK: pip install e2b with the same workflow.

Common agent patterns

• Code interpreter: let the model write and run Python/JS iteratively
• Web scraping: run Playwright in the sandbox, return screenshots + HTML
• Data processing: mount a file, transform it, download the result

Practical tips

• Always close sandboxes (await sandbox.close()) to avoid leaking resources.
• Use templates to preload dependencies (Python, Node, Playwright) for faster starts.
• Set a timeout for long-running commands to control costs.

FAQ

Is it free? The SDK is open source (Apache-2.0); cloud sandbox execution has a free tier with paid plans for scale.

Can I self-host? Yes - the project supports self-hosting the sandbox infrastructure.

Is it secure? Sandboxes are isolated microVMs; treat them as disposable and never put production secrets inside.

❓ FAQ

Is it free?

The SDK is open source (Apache-2.0); cloud sandbox execution has a free tier with paid plans for scale.

Can I self-host?

Yes - the project supports self-hosting the sandbox infrastructure.

Is it secure?

Sandboxes are isolated microVMs; treat them as disposable and never put production secrets inside.