Codara Boxes · Beta

A dev machine in the cloud. For you and your coding agents.

Codara Boxes are persistent Linux machines that live next to your apps on Codara Cloud. Connect from a terminal, VS Code or Zed, let Claude Code or Codex keep working when you close your laptop, and come back to the same home folder.

Request beta access Read the Boxes guide

Included in Starter, Standard, Pro and Scale, from €5/month before tax · In beta

Terminal · codaracloud

# on your computer$ codaracloud boxes create dev --project website --env staging --wait$ Box created: dev in my-workspace/website/staging (hel1)$ Status: Running$ Connect with: codaracloud ssh dev$ codaracloud ssh dev# in the box, tmux session main$ claude

Your laptop sleeps.Your agents keep going.

Coding agents work for minutes or hours. On a laptop they stop when the lid closes or the connection drops, and every machine needs its own setup. A box is a Linux machine in the cloud, inside one of your projects, that keeps your code, your settings and your agent sign-ins between sessions.

Keeps working while you are away

Start a task, disconnect and come back later. A busy box stays awake for up to 24 hours after your last connection, and tmux keeps your session.

Next to your apps

A box belongs to a project environment, like your services, and reaches that environment’s databases from inside Codara Cloud.

Shared with your team

Add up to 10 members of your organization to a box, so a teammate can pick up where you or your agent left off.

How it works

Four commands.Or a few clicks in the console.

01
Create a box
From the console (Boxes, then New box) or the CLI. Pick a project, an environment and a size.
```
$ codaracloud boxes create dev --project website --env staging --wait
```
02
Connect
Opens a shell in a tmux session called main. The first time, the CLI creates an SSH key and registers it for you.
```
$ codaracloud ssh dev
```
03
Start your agent
Claude Code and Codex are installed. Run one and sign in with your own account; the sign-in stays in your home folder.
```
$ claude
```
04
Preview your app
A box has no public address. Forward a port and open the dev server on your own computer.
```
$ codaracloud boxes forward dev 3000
```

Read the Boxes guide

Ready when you connect.The tools are already there.

Every box starts from the same Codara image, with the usual development tools installed and nothing signed in.

Sizes

Mini: 0.5 vCPU / 1 GiB
Small: 1 vCPU / 2 GiB
Medium: 2 vCPU / 4 GiB
Large: 4 vCPU / 8 GiB

Or set CPU and memory yourself, up to your plan’s largest box. Mini is enough for one Claude Code session.

Ubuntu 24.04 with sudo
git and the GitHub CLI
Node 24 with pnpm
Python 3 with pipx
Build tools, tmux and jq
Claude Code and Codex
A persistent home folder, 10 to 500 GiB
Port forwarding to your computer

Your editor, on the box.Or just a terminal.

One command writes an SSH host for the box, so the tools you already use connect through Codara.

$ codaracloud boxes ssh-config dev

Terminal

codaracloud ssh dev

Opens the box in tmux. If the connection drops, run it again and you are back in the same session.

VS Code

codara-dev

Install Remote - SSH, run Remote-SSH: Connect to Host and choose this host.

Zed

zed ssh://codara-dev/home/codara

Opens the box’s home folder in Zed.

Codara Studio

With the next Studio release: choose New remote workspace (SSH), find the box under Codara Cloud boxes, and Studio wakes it and connects.

Sleeps when idle.Wakes when you connect.

A box that nobody uses goes to sleep and frees its CPU and memory for your apps. Connecting wakes it again, often in a few seconds; when Codara has to start a new server, it takes several minutes.

Sleeps after 30 idle minutes

Or choose anything from 5 minutes to 24 hours, and put a box to sleep yourself at any time.

Busy boxes stay awake

A build or an agent run keeps the box awake for up to 24 hours after your last connection. After that it sleeps when idle, so a forgotten box never runs forever.

Keep awake on request

codaracloud boxes keep-awake holds a box awake for 1 to 24 hours.

How sleep and wake work

Kept while it sleeps

Everything in /home: code, shell history, tools you installed there
Agent sign-ins and git credentials in the home folder
The box’s size, members and settings

Gone when it stops

Running processes, dev servers and tmux sessions
Packages installed outside /home. List them in ~/.codara/startup.sh and they come back at every start

Sandboxed by default.Reachable only through Codara.

You get sudo inside the box, and the box runs in its own gVisor sandbox on servers reserved for boxes. There is no public address to protect: every connection goes through Codara with your sign-in and an SSH key registered to your account.

gVisor sandbox

gVisor gives each box its own application kernel between your code and the server. A box that cannot run in the sandbox is refused, never started without it.

No open ports

A box has no public address. SSH reaches it only through Codara’s tunnel, and your key works nowhere else.

Two checks to log in

A Codara sign-in with access to the box, checked again every few seconds while you are connected, and an SSH key registered to your account.

Limited outbound traffic

HTTP, HTTPS, DNS and your environment’s databases. Port 22 and port 25 are closed; git over SSH to GitHub, GitLab and Bitbucket goes through port 443.

Your sign-ins stay yours

Codara does not sign in to Claude Code, Codex or GitHub for you. Sign-ins live in the box’s home folder.

Hosted in the EU

Boxes run in Helsinki, Finland, on Hetzner Cloud.

How the platform protects you Rules for using boxes

Pricing

Included in every plan.No separate bill.

Boxes share your plan’s CPU and memory while they are awake, and its storage for as long as they exist. Prices do not change: Starter €5, Standard €20, Pro €50 and Scale €100 a month before tax.

Starter

€5/month

5 boxes

Largest box: 0.5 vCPU / 1 GiB
CPU and memory, shared while awake: 0.5 vCPU / 1 GiB RAM
Storage, shared with your apps: 25 GiB

Standard

€20/month

10 boxes

Largest box: 3 vCPU / 6 GiB
CPU and memory, shared while awake: 3 vCPU / 6 GiB RAM
Storage, shared with your apps: 40 GiB

Pro

€50/month

30 boxes

Largest box: 6 vCPU / 12 GiB
CPU and memory, shared while awake: 8 vCPU / 16 GiB RAM
Storage, shared with your apps: 80 GiB

Scale

€100/month

50 boxes

Largest box: 6 vCPU / 12 GiB
CPU and memory, shared while awake: 16 vCPU / 32 GiB RAM
Storage, shared with your apps: 150 GiB

Each box’s home folder takes at least 10 GiB of the plan’s storage, awake or asleep. Extra storage costs €0.12 per GiB per month before tax.
For example, Starter runs one Mini box at a time when nothing else is using its CPU and memory, and its 25 GiB of storage holds two 10 GiB homes with nothing else stored.
A request over a limit is refused, never billed.

See complete pricing and plan limits

Boxes are in beta

Boxes opened to every plan on 16 October 2026 and are in beta, like the rest of Codara Cloud. Know these limits before you rely on one.

Not backed up

A box’s home folder is not part of Codara’s backups and is deleted with the box. Push your work to git.

Helsinki only

Boxes are available in Helsinki, Finland.

Connections can drop

Codara updates can end your SSH connection; reconnect and tmux is still there. Server updates can restart a box, which stops its processes and tmux sessions. /home is always kept.

Memory is per box

If a process needs more memory than the box has, the whole box restarts, not just that process. /home is kept; resize the box for heavier work.

Members share everything

Members share one user with root and can read the whole home folder, including agent sign-ins. Do not put production credentials in a box.

Idle connections close

A connection closes after 60 minutes without data.

Read the limits in the guide Terms for Codara Boxes

Questions about Codara Boxes

What a box is, what it costs and what to know before you rely on one.

What is a Codara Box?

A persistent Linux machine in the cloud that belongs to one of your Codara Cloud projects. You connect over SSH from a terminal, VS Code or Zed, and everything in its home folder is kept when it sleeps. Boxes are included in Starter, Standard, Pro and Scale, in beta.

Do boxes cost extra?

No. Each plan includes a number of boxes at no extra price: Starter 5, Standard 10, Pro 30 and Scale 50. They use your plan’s CPU and memory while awake and its storage while they exist. If box homes need more storage, extra storage costs €0.12 per GiB per month before tax.

Can Claude Code and Codex run in a box?

Yes. Both are installed in every box. Connect, run claude or codex and sign in with your own account; Codara does not sign in for you. The sign-in is stored in the box’s home folder, so it survives sleep. A Mini box (0.5 vCPU / 1 GiB) is enough for one Claude Code session.

Does an agent keep working after I disconnect?

Yes, while the box is busy. A box that is using CPU stays awake for up to 24 hours after your last connection, and codaracloud boxes keep-awake holds it awake for 1 to 24 hours. After that it sleeps when idle, so a forgotten box does not run forever.

What happens to my files when a box sleeps?

Everything in /home stays: code, shell history, tools installed there and sign-ins. Running processes and tmux sessions stop, and packages installed outside /home are gone; list them in ~/.codara/startup.sh to install them again at every start.

Are boxes backed up?

No. A box’s home folder is not backed up and is deleted with the box. Push your code to git and keep a copy of anything else you cannot lose.

Who can connect to my box?

You, and up to 10 members of your organization that you add to it. Organization owners and admins can see, resize or delete a box but cannot connect unless they are added. Everyone who connects shares one user with root, so only add people you trust.

Can I open a box from the internet?

No. A box has no public address. To preview a dev server, forward its port to your computer with codaracloud boxes forward; only you can reach it while the command runs.

Give your agents a machine of their own.

Request beta access. Codara Boxes come with every plan, from Starter at €5 a month before tax.

Request beta access See what's included