Get it · $39
Think you've found a trading edge? Prove it tonight.

Backtest your trading idea with ChatGPT or Claude. No coding.

Explain your idea in plain English. Your AI writes the code. Then a 10-point check tells you if the result is real, or if your AI is fooling you.

  • 38-page playbook
  • AI skills
  • Copy-paste prompts
  • Sample code
Yes! I want Backtest LabInstant download · $39 once
30-day money-back guaranteeSecure checkoutWorks with ChatGPT or Claude
Your AI chat · new idea
✦ Prompt 1 + AI skills
YouBuy the 3 strongest sector ETFs each month. Sell any that drop under their 200-day average.
Your AIGot it. Top 3 each month, sell any under its 200-day. Writing the backtest code now.
Your AIDone. Now the 10-point check: fees on, no failed orders, no peeking ahead.
Waiting for your idea…
Your strategyJust buy and hold
Drawdown
201720182019202020212022202320242025
CAGR…✓ Checked
Sharpe…✓ Checked
Max drop…✓ Checked
Trades…✓ Listed
Fees…✓ On
Rejected…0

An illustration, not real numbers. Hypothetical backtest. Education only, not financial advice.

Does any of this sound like you?

You've got a strategy you've never really tested. Or you don't know where to start.

  • ✕
    "I don't know any programming language."→ The prompts tell your AI what to write. You paste and click.
  • ✕
    "It ran. The chart looks amazing. Is it real?"→ The 10-point check. Ten things to look at in the output. If any one fails, the run is no good.
  • ✕
    "Where do I even get clean price data?"→ It's built into the free account. Stocks, ETFs and crypto. You download nothing.
  • ✕
    "Anything I find will just be a fluke."→ The backtest gate: first half, second half, double the fees, nudge the settings. Real edges survive.
  • ✕
    "I don't even know what to test."→ Start with the worked sample and 4 ready-made templates. Change one rule. Run it.

If you nodded at even one of those, keep reading. The rest of this page is for you.

Why the check matters

The chart looked amazing. 12,622 of its orders never happened.

While building this kit, we had an AI write a crypto backtest. The chart looked great.

Then we ran the 10-point check. Check 8 reads the order list. 12,622 orders had been rejected. A fee setting left the account a hair short, so the sell orders failed. Nothing on the chart showed it.

The strategy on the screen wasn't the strategy in the code. One check, two minutes, and a fake result became a known bug with a fix instead of a bad trade.

Order audit · check 8
Backtest status✓ Completed
ChartLooked amazing
Rejected orders12,622
✕ Not the strategy you wrote
From a real test run while building the kit. Hypothetical backtest.

Here's what a clean run looks like.

Same check, on the sample strategy that comes in the kit: 2,644 orders over nine years. Every one filled. Zero rejected. This is the kit's results reader, run on that backtest. Nothing edited.

tools/qc_results.py · the included sample
$ python tools/qc_results.py orders 37795109 43cd6277773bbd97ca8a2bb5c1770b6e --first 1
orders read: 2644 | invalid: 0
{"id": 1, "time": "2017-01-03T00:00:00Z", "symbol": {"value": "BTCUSD", "id": "BTCUSD 10B", "permtick": "BTCUSD"}, "quantity": 42.52051342, "price": 1021.01891, "status": 3, "tag": "Clenow weekly spend-down buy stage"}
  • 2,644 orders read. Matches the order count in the stats, so nothing went missing.
  • 0 invalid. Check 8 passes. Compare that with 12,622 above.
  • "status": 3 means filled. You don't need to know that. Your AI reads it for you.

Read on Nov 2, 2026 from the sample's reference backtest (2017–2025). Hypothetical backtest. Education only, not financial advice.

Your AI is fast and sure of itself. It won't tell you when it's wrong. The 10-point check will.

Why I built this

I've spent 300+ hours fixing backtest errors. Rejected orders, fee settings, data gaps, the same crash over and over. Every one of the 41 bugs in the playbook is one I hit, with the fix that worked. I'm hoping it saves you most of those hours.

Introducing

Backtest Lab: the playbook, AI skills and prompts that turn your AI into a backtesting helper

DIGITAL DOWNLOAD Backtest Lab playbook cover
Prompt 1 · Idea to rulesBefore writing any code, help me turn my idea into exact rules. Ask me one question at a time…

A 38-page step-by-step playbook plus AI skills and copy-paste prompts for ChatGPT, Claude, Codex or Gemini. Same AI you already pay for. The skills give it a plan to follow.

  • Your idea becomes exact rules before any code gets written.
  • Your AI writes the backtest. It runs on a free QuantConnect account, data included.
  • The 10-point check tells you if the result is real. You never read a line of code.
  • 41 known bugs with fixes end the crash, fix, crash again loop.
Get Backtest Lab · $39Instant download · 30-day guarantee
How it works

Three steps

1

Turn the idea into rules

Prompt 1 asks you one question at a time until "buy the dip" is a set of exact rules.

2

Your AI writes the code

Run it on a free QuantConnect account, with the data already there. The AI skills keep it on track.

3

Check the result

Order list, fees, dates, first trades. The 10-point check tells you what each one should look like.

The real thing, sped up. Recreated from a real run of the included sample strategy. Hypothetical backtest. Education only, not financial advice.

Setup is about 10 minutes of sign-ups. The included sample strategy runs in a few minutes after that.

What's inside

15 chapters and a folder full of tools. Tap any part to look inside.

The playbook teaches you. The AI skills and files do the heavy lifting inside your AI.

Real pages from the playbook

Page 5 · Start here. Paste one line and your AI sets you up.
Page 17 · The 10-point check. What to look at, and the red flag for each.
Page 20 · Known bugs. What you see, why it happens, the fix.

Swipe for more. Tap a page to read it.

The playbook, in 4 parts

Part 1 · Night one

Get it running

4 chapters
  • Start
    Hand the kit to your AITen minutes of sign-ups. Then your AI takes it from there.
  • 1
    Why most beginner backtests lieThe 3 stages every new tester hits, and how to skip the painful middle one.
  • 2
    Day 1: get set upOne AI plan, one free account. That's the whole shopping list.
  • 3
    Your first backtestRun a real strategy from our own research. Not a toy made up for the book.
Part 2 · Know if it's real

Trust the result

4 chapters
  • 4
    Read results like a researcherWhat to look at first, what to ignore, and every word on the screen.
  • 5
    The 10-point checkTen questions that catch a backtest that's lying to you. Then the gate: halves, double fees, nudged settings.
  • 6
    Known bugs and fixes41 errors we already hit, with the fix for each. So you don't pay to find them.
  • 7
    Save your AI planStop paying for the same bug twenty times. Six habits that keep chats short.
Part 3 · Your ideas, tested

Build your own

4 chapters
  • 8
    Your research systemIdea cards, test records and a weekly routine that fits around a job.
  • 9
    Where ideas come fromA two-minute filter that throws out most ideas fast. Plus free research papers.
  • 10
    Avoiding overfittingThe lucky-coin problem, and seven ways to keep it from fooling you.
  • 11
    Risk and position sizingThe least exciting chapter. Maybe the most important one.
Part 4 · Real money, last

Go live slowly

4 chapters
  • 12
    The going-live ladderFive rungs from backtest to real money. Paper first, then small. No skipping.
  • 13
    Your first 30 daysA week-by-week plan. If your first idea fails the test, that's a win.
  • 14–15
    Reading list and glossaryWhere the pros learned this, and every term in plain English.
  • +
    ChecklistsOne-page checklists and a coach card for when you only have the PDF.

The files your AI uses

Inside your download folder8 items
  • ✓
    The AI skillsAGENTS.md · SKILL.mdYour AI loads these and follows the plan, step by step. You never have to open it.
  • ✓
    The bug listcoach/known-bugs.md41 bugs, each with the exact error message and the fix. Your AI checks here before it guesses.
  • ✓
    The 10-point checkcoach/verify.mdThe check, written for your AI. It fills in the table, you read the answers.
  • ✓
    The results readertools/qc_results.pyLets your AI pull the stats, orders and logs itself. No pasting walls of text.
  • ✓
    3 audit promptsprompts/Code audit, result audit, experiment review. A tough second opinion from a fresh chat.
  • ✓
    Strategy templatestemplates/algorithms/Trend crossover, RSI buy-the-dip, momentum rotation and a walk-forward tester. Start from one and change a rule.
  • ✓
    The sample strategySample projectA full crypto momentum system: top 40 coins, weekly picks, a Bitcoin trend filter, real fees on.
  • ✓
    A research foldertemplates/research-repo/Idea backlog, strategy list and error log, ready to fill in. Plus the go-live checklists.

Plus a library to grow into

17Trading booksHand-picked, with one line on why each is worth your time.
9Free research papersPlus a prompt that turns any paper into a test you can run.
21Glossary termsEvery word on the results screen, in plain English.
3One-page checklistsBefore you trust a result, after each session, before real money.

You never have to read the code. But it's all there, plain and commented, if you get curious.

Here's everything you get

One download. Everything for your first and hundredth backtest.

Backtest Lab · Playbook + AI Skills + Prompts
  • The 38-page step-by-step playbook (PDF)Setup, first run, reading results, going live slowly. Plain English.
  • AI skills + copy-paste promptsIdea to rules, write the code, read the output, get a skeptical second opinion. ChatGPT, Claude, Codex or Gemini.
  • The 10-point check + the backtest gateCatches the ten ways a backtest lies, then stress-tests what's left.
  • 41 known bugs with fixesThe exact error, why it happens, the fix. Your AI reads this first.
  • Worked sample strategy + 4 templatesA real crypto strategy, plus trend, buy-the-dip, rotation and walk-forward templates for stocks and ETFs.
  • Research systemIdea cards, test records and a weekly routine that fits around a job.
Today's price
$39 one time

Cheaper than one bad trade. Way cheaper than a coding bootcamp.

Yes! I want Backtest LabInstant download · 30-day guarantee
Secure checkout via GumroadDownload in seconds
MONEY-BACK • GUARANTEE • MONEY-BACK • GUARANTEE • 30 DAYS

The First Backtest GuaranteeRun the sample strategy on your QuantConnect account. If it won't run cleanly (zero rejected orders, passes the 10-point check), you get every cent back. Ask any time in the first 30 days. No forms.

Who it's for

This is for you if…

Get it if you…

  • have a day job and trade on the side, with a strategy you've never really tested
  • don't code, or would rather not
  • already tried "ChatGPT, backtest this" and hit a crash loop or a result you couldn't trust
  • would rather find out an idea is broken in a backtest than in your account
  • trade stocks, ETFs or crypto

Skip it if you…

  • want signals, tips or a bot. There are none here, and no trade recommendations.
  • want a strategy handed to you. Plenty of ideas should fail a good test. That's the point.
  • already do this for a living with your own tools
  • don't want to pay for an AI plan or sign up for a free QuantConnect account
Before you buy

Two things you should know

You need two other things.A ChatGPT or Claude plan, about $20 a month, and a free QuantConnect account. On the free account you do some copy and paste yourself. The optional upgrade, about $24 a month, lets your AI run backtests on its own.
The worked sample is crypto.The templates cover stocks and ETFs, and the steps are the same in every market. There isn't a worked stock example yet.
FAQ

Your questions, answered

Will this make me money?

I can't promise that, and you should be wary of anyone who does. The playbook teaches you to test ideas. The biggest way it can save you money is by saying "no" before your account does. Education only, not financial advice.

Why not just ask ChatGPT for free?

You can, and you'll get code. What you won't get is the list of bugs it's about to make, a rule that stops the crash loop, or a way to check its answer without asking it. Same AI, better questions.

Is my strategy private?

Yes. Everything runs in your own AI chat and your own QuantConnect account. Nothing is sent to us.

Is it only for crypto?

No. The worked sample uses crypto data. The templates cover stocks and ETFs: trend following, momentum rotation and mean reversion.

How long until my first backtest?

About 10 minutes of sign-ups, then the sample runs in a few minutes. Your own idea takes as long as it takes you to answer the rule questions.

What if I get stuck?

Your AI checks the 41 known bugs first. For anything new, the two-strike rule stops it patching and makes it find the real cause. The playbook also has a prompt that gets a second opinion from a fresh chat.

Is your idea an edge or a guess? Find out tonight.

Yes! I want Backtest LabInstant download · $39 once
30-day money-back guaranteeSecure checkout
P.S. Every strategy you trade before testing it is a guess with real money on it. For $39 and a 30-day guarantee, you can find out which of yours hold up.
The free starter pack

Not ready for $39? Take the free starter pack.

Prompt 1 with a 6-question worksheet, the 10-point check on one card, and 3 real bug fixes. A 4-page PDF.

Send me the free pack Enter your email at checkout and the PDF arrives right away. No spam, unsubscribe anytime.
Backtest Lab · $3930-day guarantee
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