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Developer building blocks

E2B

Safe, isolated cloud computers where AI agents can run the code they write without risking your systems.

Widely used

What it does

When an AI writes code, running it directly on your computer can be risky. E2B provides sandboxes: sealed-off computers in the cloud where AI-generated code can run safely.

Developers start and control these sandboxes from their own apps using E2B's toolkits for Python and JavaScript. Extra toolkits add a code interpreter and a full virtual desktop that agents can use.

Using the hosted service requires signing up for an E2B account and API key.

Who it's for

Developers building AI agents or apps that need to run code safely.

Can I use it without coding?

Developers only. A programming toolkit; you write code and need an E2B account. New to this? Start here.

Can I run it?

Runs on
Cloud
Privacy
Sends what you give it to an online service
API key
Needed. An API key is a password-like code from an online AI service. What's that?

Try it

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (Apache-2.0): Permissive: free to use, change and share, including for business.
  • Keep your API key private. Never paste it into websites or share it, and set a spending limit with the AI service.
  • What you type or upload is sent to an online service. Avoid sharing private or sensitive information.
  • More on staying safe

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