E2B

// Overview

E2B is open-source infrastructure that lets you run AI-generated code in secure, isolated sandboxes in the cloud. Each sandbox is a separate environment, so code produced by a language model can run safely without putting your own systems at risk.

You start and control sandboxes from your own application using the E2B JavaScript or Python SDK. Inside a sandbox you can run shell commands and, with the Code Interpreter SDK, execute code directly and read back the result. E2B can be used as a hosted service with an API key, or self-hosted on your own cloud.

// What it does

• Secure, isolated cloud sandboxes for running untrusted, AI-generated code
• Official SDKs for both JavaScript/TypeScript and Python
• Run shell commands inside a sandbox and read back stdout
• Code Interpreter SDK to execute code with runCode() / run_code() and get the result
• Self-hosting option using Terraform on AWS or Google Cloud (GCP)
• Cookbook with examples for different LLMs and AI frameworks

// Getting started

Install the SDK, set your E2B API key, then create a sandbox and run commands inside it. For executing code and reading the result, add the Code Interpreter SDK.

npm i e2b        # JavaScript / TypeScript
pip install e2b  # Python

E2B_API_KEY=e2b_***

import Sandbox from 'e2b'

const sandbox = await Sandbox.create()
const result = await sandbox.commands.run('echo "Hello from E2B!"')
console.log(result.stdout) // Hello from E2B!

npm i @e2b/code-interpreter     # JavaScript/TypeScript
pip install e2b-code-interpreter  # Python

Commands and code are distilled from the project's own documentation — always check the official repo for the latest.

// When to use it

• Safely running code that a language model generates, without exposing your own machine
• Building AI agents and code interpreters that need to execute and check code on the fly
• Giving data-analysis or coding assistants a clean, throwaway environment for each task
• Self-hosting sandbox infrastructure on AWS or GCP for full control over where code runs

// How E2B compares

E2B alongside other open-source code sandboxes & isolation tools AI/TLDR tracks, ranked by GitHub stars.