A workspace that stays put
Repositories, shell history, and tool configuration live in your persistent home directory across sessions.
▍ Codex in the browser
Run Codex CLI in your browser.
Give Codex a persistent Linux workspace instead of tying it to one laptop. Open the shell from any modern browser, leave work running, and reconnect to the same session later.
- Codex CLI preinstalled
- Full Debian shell
- Phone-ready browser access
claude-refactor
$ claude --dangerously-skip-permissions
Claude Code v0.2.31
> Refactor data loader to stream results and add tests.
I'll refactor the data loader to use a streaming approach and add comprehensive tests.
Plan
Edit src/loader/stream.ts
+ 142 − 68
Edit test/loader/stream.test.ts
+ 211
Bash npm test
> 32 passed (1.2s)
✓ All tests passing.
>
What changes
The terminal becomes a place you return to.
Background work keeps going
Detach from tmux without stopping the container, long-running command, or Codex session behind it.
Use more than one device
Attach from a browser or the Terminalbox CLI without copying the project to another machine.
How it works
From sign-in to a persistent session.
- 01
Open a Codex terminal
Choose the Codex template from the Terminalbox session picker. The environment arrives with the CLI ready.
- 02
Sign in to OpenAI
Follow the Codex sign-in flow in the terminal and use the ChatGPT account or API access you already manage.
- 03
Return whenever you need it
Close the tab to detach. Reopen the session from another browser and continue in the same tmux state.
Before you start
Questions worth answering.
Is Codex usage included in a Terminalbox plan?
No. Terminalbox charges for the hosted terminal and storage. Codex access, limits, and any model charges are handled by OpenAI.
Can I use my ChatGPT plan to sign in?
Codex supports ChatGPT sign-in on eligible plans. Availability and usage limits vary, so check the current OpenAI plan documentation.
Do I get a real shell or only a chat window?
You get a Debian shell with Git, files, package managers, networking, and tmux. Codex runs as a CLI inside that environment.
What happens when I close the browser?
Your browser detaches, while the hosted container and tmux session continue running until you explicitly end the session.
Persistent by default
Start here. Pick it up anywhere.
Plans start at €6 per month for one hosted coding-agent terminal.