Mish Ushakov
4e16cffc2f
Adds a `proxy` connection parameter to the JS SDK, mirroring the Python
SDK. When set, requests are routed through the given HTTP proxy via an
undici `ProxyAgent` dispatcher (fetchers are cached per-proxy so
non-proxy traffic is unaffected). It applies to control-plane API
requests, all requests made to the returned sandbox (REST plus
filesystem/commands/pty RPC), and volume requests. Behavior is unchanged
when no proxy is provided, and unit tests cover both the API and envd
fetch paths.
## Usage
```ts
import { Sandbox } from 'e2b'
// Routes API + all sandbox requests through the proxy
const sandbox = await Sandbox.create({
proxy: 'http://user:pass@127.0.0.1:8080',
})
await sandbox.files.write('/hello.txt', 'world')
// Also works when connecting to an existing sandbox
const sbx = await Sandbox.connect(sandboxId, { proxy: 'http://127.0.0.1:8080' })
```
> Proxying relies on the optional `undici` package and the Node runtime;
in browser/edge runtimes requests use global `fetch`, which has no proxy
support (same as the existing HTTP/2 dispatcher).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
What is E2B?
E2B is an open-source infrastructure that allows you to run AI-generated code in secure isolated sandboxes in the cloud. To start and control sandboxes, use our JavaScript SDK or Python SDK.
Run your first Sandbox
1. Install SDK
npm i e2b
2. Get your E2B API key
E2B_API_KEY=e2b_***
3. Start a sandbox and run commands
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!
4. Code execution with Code Interpreter
If you need runCode(), install the Code Interpreter SDK:
npm i @e2b/code-interpreter
import { Sandbox } from '@e2b/code-interpreter'
const sandbox = await Sandbox.create()
const execution = await sandbox.runCode('x = 1; x += 1; x')
console.log(execution.text) // outputs 2
5. Check docs
Visit E2B documentation.
6. E2B cookbook
Visit our Cookbook to get inspired by examples with different LLMs and AI frameworks.