---
title: "Introducing Dozer Sandbox — Dozable blog"
description: "Fast, resumable, secure Linux sandboxes for AI coding agents on your Mac — free and open source. Here's what it is, why it exists, and how to try it in a minute."
date: 2026-10-11
topics: [release-news]
url: https://dozable.com/blog/introducing-dozer-sandbox
image: https://dozable.com/og-image.png
source: "Dozable blog"
---
# Introducing Dozer Sandbox

*11 October 2026 · Release news*

Coding agents are at their best when you stop approving every command. They're at their most worrying then too:
the agent can read your files, run anything, and reach any site, all with your keys in its environment.

**Dozer Sandbox** gives each agent its own small Linux computer on your Mac, so you can let it work.

## What a sandbox is

Each sandbox is a small Linux virtual machine with one project folder from your Mac inside it, at `/workspace`.
Run Claude Code, Codex or pi in it with the permission prompts off: the VM is the boundary.

- **Fast.** A sandbox starts in about a third of a second and pauses in a millisecond.
- **Resumable.** Put it to sleep and it gives its memory back. Wake it and every program is still running where
  you left it, mid-sentence.
- **Secure.** The network goes through a policy you can read, and **your API keys never go inside**: the agent sees
  a placeholder, and the real key is added on your Mac on the way out.

![The dashboard while an agent works](https://dozable.com/blog/images/introducing-dozer-sandbox/dashboard.jpg)

## Try it

You need a Mac with Apple silicon and macOS 26 or later, and Homebrew.

```sh
brew trust --tap dozer-sandbox/tap
brew install dozer-sandbox/tap/doz
doz ui
```

The dashboard opens on a short setup wizard: it checks your Mac, asks how your agent should sign in, and prepares
an image. Then **New sandbox** and you're in. Prefer the terminal? `doz onboard`, then `doz up` in a project folder.

## Free and open source

Dozer Sandbox is free, and its source is on [GitHub](https://github.com/dozer-sandbox/dozer-sandbox).

This blog is where news, early access and tips will appear. They're also sent by email to anyone who
[signs up](https://dozable.com/signup) for them. Thanks for reading, and for trying it.