I Gave JEV Control of a Trading Bot

Get the Jev loop promptJoin The Desk · first 7 days free ↗Watch the video

For the part-time quants

“You don’t interact with Jev, data interacts with it.”

Jev came out on 15 September. It doesn’t write text. You send it the state of the market and typed questions, and it sends back decisions with a confidence score in a few hundred milliseconds. I pasted one prompt into Claude Code and it built the whole loop: my code works out the market every tick, Jev answers seven typed questions in one call, my thresholds turn the answers into a buy or a sell, and hard risk limits can veto anything. It runs on your own computer, on Alpaca paper money.

Chapters7

Your host

HostLewis Jackson

Builds trading systems with Claude. Founder of Part-Time Quant Academy.

The prompt

Get the Jev loop prompt

The whole loop as one prompt for Claude Code. It runs on your own computer, on Alpaca paper money.

jev-loop-prompt.md · the only thing you paste

The one-shot prompt

# Install the jev-loop Claude Code skill

> **Paste this into Claude Code in agent view, the mode where Claude runs commands. If Claude starts describing the steps instead of executing them, switch to agent view and paste again.**
>
> The onboarding agent installs a 24/7 trading loop as a Claude Code skill at `~/.claude/skills/jev-loop/`. It scaffolds a deterministic state engine, a seven-question judgment battery against Jev (the Vercel AI Gateway is the normal route to it, no waitlist), a strategy layer and risk layer that live entirely in your own code, and Alpaca execution on any crypto pair or US equity ticker you choose. After install you can ask Claude, in any session, to run the loop, calibrate it, explain the split, or open its dashboard. Mac, Windows, and Linux all supported. Paper trading by default, everywhere: going live needs a deliberately awkward three-part opt-in documen
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One file · 306 KB · Paper money by default

The prompt

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What you learn

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What you get

The strategies I run, plus a new one every month
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Every strategy from my videos, with its build prompt
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Inside The Desk on Skool: the strategy, the trade journal and the Desk call recordings — Inside The Desk: the strategy, every trade I take, and a call with me every two weeks.

Inside the Jev loop

What it builds,
what you need.

4 screens · 3 frames

What the prompt buildsTwenty recorded seconds of the loop on BTC/USD. Jev answers through Vercel AI Gateway in about 400 milliseconds. When an answer comes back too late, the loop holds instead of guessing.The prompt’s own dashboard, replaying a recorded dry run. It places no orders, so the paper balance doesn’t move. On a phone, go full screen to read the panels.

Claude Code asking which market the loop should watch on its first run — **Claude Code**Any plan that runs it. Paste the prompt and it builds the loop, then asks which market to watch.From the video · 12:40

Recent paper orders on BTC/USD in the Alpaca dashboard — **An Alpaca paper account**The loop trades paper money there. No live keys go near it.From the video · 9:05. The loop’s paper orders on BTC/USD.

The Vercel AI Gateway page, where the Jev key comes from — **A Jev key**From Vercel AI Gateway or TypeSafe. You don’t need a TypeSafe invite. Until you add a key, it runs on a stand-in for Jev, and it tells you so.From the video · 11:22

Lewis explaining how Jev differs from a chat model — From the video · 2:23

Lewis on giving Jev yes-or-no questions — From the video · 3:28

Lewis talking to camera about strategy — From the video · 4:01

“Real good strategies are really hard to come by, and you need to build them properly.”

Lewis Jackson

Questions

What does the prompt build?

A trading loop that runs around the clock on your own computer. Every tick, your code works out the state of the market, Jev answers seven typed questions about it in one call, your thresholds turn the answers into a buy or a sell, and hard risk limits can veto anything. It comes with a live dashboard.

Is it real money?

No. It trades an Alpaca paper account by default, and no live keys go near it. Going live is a separate step the install never turns on for you.

Do I need a TypeSafe invite?

No. Vercel AI Gateway gets you to Jev today. It needs a card on your Vercel account before it answers, and a few dollars covers about a month. Until you add a key, it runs on a stand-in for Jev, and it tells you so.

What does it cost?

No charge for the prompt. Claude usage and a Jev key are separate.

Which markets can it trade?

What Alpaca offers: crypto pairs in US dollars, like BTC/USD, around the clock, and US stocks and ETFs while the market is open. It runs long or flat: a sell closes the position, and it can’t open a short. Ask it for MetaTrader, forex or futures and it says so before it builds anything.

Does it work on Windows?

Yes. It checks your system and your shell first, and it has a Mac, Windows and Linux form of every step. If something breaks, put it in the comments under the video. My team and I read all of them and we update the prompt from what you tell us.

Is the strategy in the video any good?

It’s a generic one, put in so you can watch the system work. The loop is the harness you plug a strategy into. Building one worth plugging in is what the Academy is for.