eve/docs/sandbox/default.mdx

Filesystem-first framework for durable backend AI agents that run anywhere.

---
title: "Default Sandbox"
description: "Let eve select the sandbox provider for the current environment."
---

`DefaultSandbox.environment()` preserves eve's standard behavior without exposing provider-specific live creation options.

```ts
import { DefaultSandbox, defineSandbox } from "eve/sandbox";

export const environment = DefaultSandbox.environment();
export default defineSandbox(() => environment.open());
```

On Vercel, it selects [Vercel Sandbox](/docs/sandbox/vercel). Elsewhere, it tries [Docker](/docs/sandbox/docker), [microsandbox](/docs/sandbox/microsandbox), and [just-bash](/docs/sandbox/just-bash), in that order, according to host support.

Use a provider directly when you need its image, VM, network, compute, or mount options.