Sandbox

E2B cloud sandbox is a secure and isolated cloud environment.

The sandbox allows you to:

• Access Linux OS
• Create, list, and delete files and directories
• Run commands
• Run isolated code
• Access the internet

Check docs here.

Use Sandbox.create to create a new sandbox.

Example

import { Sandbox } from 'e2b'

const sandbox = await Sandbox.create()

Properties

Methods

downloadUrl()

downloadUrl(path: string): string

Get the URL to download a file from the sandbox.

Parameters

Returns

string

URL for downloading file.

getHost()

getHost(port: number): string

Get the host address for the specified sandbox port. You can then use this address to connect to the sandbox port from outside the sandbox via HTTP or WebSocket.

Parameters

Returns

string

host address of the sandbox port.

Example

const sandbox = await Sandbox.create()
// Start an HTTP server
await sandbox.commands.exec('python3 -m http.server 3000')
// Get the hostname of the HTTP server
const serverURL = sandbox.getHost(3000)

isRunning()

isRunning(opts?: Pick<ConnectionOpts, "requestTimeoutMs">): Promise<boolean>

Check if the sandbox is running.

Parameters

Returns

Promise<boolean>

true if the sandbox is running, false otherwise.

Example

const sandbox = await Sandbox.create()
await sandbox.isRunning() // Returns true

await sandbox.kill()
await sandbox.isRunning() // Returns false

kill()

kill(opts?: Pick<SandboxOpts, "requestTimeoutMs">): Promise<void>

Kill the sandbox.

Parameters

Returns

Promise<void>

setTimeout()

setTimeout(timeoutMs: number, opts?: Pick<SandboxOpts, "requestTimeoutMs">): Promise<void>

Set the timeout of the sandbox. After the timeout expires the sandbox will be automatically killed.

This method can extend or reduce the sandbox timeout set when creating the sandbox or from the last call to .setTimeout. Maximum time a sandbox can be kept alive is 24 hours (86_400_000 milliseconds) for Pro users and 1 hour (3_600_000 milliseconds) for Hobby users.

Parameters

Returns

Promise<void>

uploadUrl()

uploadUrl(path?: string): string

Get the URL to upload a file to the sandbox.

You have to send a POST request to this URL with the file as multipart/form-data.

Parameters

Returns

string

URL for uploading file.

connect()

static connect<S>(
   this: S, 
   sandboxId: string, 
opts?: Omit<SandboxOpts, "timeoutMs" | "metadata" | "envs">): Promise<InstanceType<S>>

Connect to an existing sandbox. With sandbox ID you can connect to the same sandbox from different places or environments (serverless functions, etc).

Type Parameters

Parameters

Returns

Promise<InstanceType<S>>

sandbox instance for the existing sandbox.

Example

const sandbox = await Sandbox.create()
const sandboxId = sandbox.sandboxId

// Connect to the same sandbox.
const sameSandbox = await Sandbox.connect(sandboxId)

create()

create(this, opts)

static create<S>(this: S, opts?: SandboxOpts): Promise<InstanceType<S>>

Create a new sandbox from the default base sandbox template.

Type Parameters

Parameters

Returns

Promise<InstanceType<S>>

sandbox instance for the new sandbox.

Example

const sandbox = await Sandbox.create()

Constructs

Sandbox

create(this, template, opts)

static create<S>(
   this: S, 
   template: string, 
opts?: SandboxOpts): Promise<InstanceType<S>>

Create a new sandbox from the specified sandbox template.

Type Parameters

Parameters

Returns

Promise<InstanceType<S>>

sandbox instance for the new sandbox.

Example

const sandbox = await Sandbox.create('<template-name-or-id>')

Constructs

Sandbox

kill()

static kill(sandboxId: string, opts?: SandboxApiOpts): Promise<boolean>

Kill the sandbox specified by sandbox ID.

Parameters

Returns

Promise<boolean>

true if the sandbox was found and killed, false otherwise.

list()

static list(opts?: SandboxApiOpts): Promise<SandboxInfo[]>

List all running sandboxes.

Parameters

Returns

Promise<SandboxInfo[]>

list of running sandboxes.

setTimeout()

static setTimeout(
   sandboxId: string, 
   timeoutMs: number, 
opts?: SandboxApiOpts): Promise<void>

Set the timeout of the specified sandbox. After the timeout expires the sandbox will be automatically killed.

This method can extend or reduce the sandbox timeout set when creating the sandbox or from the last call to Sandbox.setTimeout.

Maximum time a sandbox can be kept alive is 24 hours (86_400_000 milliseconds) for Pro users and 1 hour (3_600_000 milliseconds) for Hobby users.

Parameters

Returns

Promise<void>

Interfaces

SandboxOpts

Options for creating a new Sandbox.

Properties

accessToken?

optional accessToken: string;

E2B access token to use for authentication.

Default

E2B_ACCESS_TOKEN // environment variable

apiKey?

optional apiKey: string;

E2B API key to use for authentication.

Default

E2B_API_KEY // environment variable

debug?

optional debug: boolean;

Internal

If true the SDK starts in the debug mode and connects to the local envd API server.

Default

E2B_DEBUG // environment variable or false

domain?

optional domain: string;

Domain to use for the API.

Default

E2B_DOMAIN // environment variable or e2b.dev

envs?

optional envs: Record<string, string>;

Custom environment variables for the sandbox.

Used when executing commands and code in the sandbox. Can be overridden with the envs argument when executing commands or code.

Default

{}

logger?

optional logger: Logger;

Logger to use for logging messages. It can accept any object that implements Logger interface—for example, console.

metadata?

optional metadata: Record<string, string>;

Custom metadata for the sandbox.

Default

{}

requestTimeoutMs?

optional requestTimeoutMs: number;

Timeout for requests to the API in milliseconds.

Default

30_000 // 30 seconds

timeoutMs?

optional timeoutMs: number;

Timeout for the sandbox in milliseconds. Maximum time a sandbox can be kept alive is 24 hours (86_400_000 milliseconds) for Pro users and 1 hour (3_600_000 milliseconds) for Hobby users.

Default

300_000 // 5 minutes