---
title: "E2B"
description: "Deploy Sandbox Agent inside an E2B sandbox."
---

## Prerequisites

- `E2B_API_KEY`
- `ANTHROPIC_API_KEY` or `OPENAI_API_KEY`

## TypeScript example

```typescript
import { Sandbox } from "@e2b/code-interpreter";
import { SandboxAgent } from "sandbox-agent";

const envs: Record<string, string> = {};
if (process.env.ANTHROPIC_API_KEY) envs.ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
if (process.env.OPENAI_API_KEY) envs.OPENAI_API_KEY = process.env.OPENAI_API_KEY;

const sandbox = await Sandbox.create({ allowInternetAccess: true, envs });

await sandbox.commands.run(
  "curl -fsSL https://releases.rivet.dev/sandbox-agent/0.2.x/install.sh | sh"
);

await sandbox.commands.run("sandbox-agent install-agent claude");
await sandbox.commands.run("sandbox-agent install-agent codex");

await sandbox.commands.run(
  "sandbox-agent server --no-token --host 0.0.0.0 --port 3000",
  { background: true, timeoutMs: 0 }
);

const baseUrl = `https://${sandbox.getHost(3000)}`;
const sdk = await SandboxAgent.connect({ baseUrl });

const session = await sdk.createSession({ agent: "claude" });
const off = session.onEvent((event) => {
  console.log(event.sender, event.payload);
});

await session.prompt([{ type: "text", text: "Summarize this repository" }]);
off();

await sandbox.kill();
```

## Faster cold starts

For faster startup, create a custom E2B template with Sandbox Agent and target agents pre-installed.
See [E2B Custom Templates](https://e2b.dev/docs/sandbox-template).
