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Ship features between sets at the gym

A solo developer keeps Codex working on a $5 box and steers it between sets and on the train. The phone only shows the session; the box does the work.

Start my boxSee the plans

From $5 a month · Docker and sudo included · Cancel from the dashboard any time

Solo time comes in five-minute pieces

A commute, a rest between sets, a queue at the café. Too short to open a laptop, long enough to answer an agent.

When the agent runs on the laptop in your bag, none of those minutes count.

One solo day

  1. 07:40

    On the train

    Open the dashboard on the phone and give Codex the day's first task.

  2. 07:55

    Off the train

    Close the browser. The session keeps working on the box.

  3. 18:10

    Between sets

    Check the tab, read what changed, answer the agent's one question. Next set.

  4. 18:40

    Try it on the phone

    Open the dev server's preview link and click through the new feature.

What a box gives a solo developer

  • Minutes that count

    Every short break moves the work forward, because the agent keeps going in between.

  • Nothing to carry

    No laptop in the gym bag. The box holds the code, the tests and the session.

  • The app in your hand

    The preview link opens the running app on the phone, over HTTPS.

  • $5 a month

    Start's 2 vCPU and 4 GB carry one agent on one repo, around the clock.

The box for this job

Start · $5

One agent on one repo fits Start's 2 vCPU and 4 GB, for $5 a month.

Manifestdetachbox · KZ-1
Box
gym-bag
Plan
Start · 2 vCPU · 4 GB · 50 GB · $5/mo
Agent
Codex
Tabs
2
Services
None needed
Preview
https://3000-gym-bag.detachbox.dev
Runs
Around the clock, lid closed

Start

$5a month

One agent on one repo, all night long

vCPU
2
RAM
4 GB
disk
50 GB
Internet
50 Mbit
Start my box

Questions about this

Is typing on a phone practical?

You type one-line answers. The agent writes the code.

Which agent works best from a phone?

Any of them. The session looks the same on every screen, because it runs in tmux on the box.

What if I lose signal?

The agent keeps working. Reopen the tab and you are back where it is, with the full scrollback.

Ship features between sets at the gym

Start a box, hand the agent the job and close the tab. Come back to finished work.

Start my box

Charged when the box starts · Cancel from the dashboard; the box runs to the end of the paid month