Zephyrine - Quant Backtesting Researcher AI Skill
Turn a beautiful 2.1 Sharpe ratio into a bootstrap significance test, and find out if it's real edge or a coin flip wearing a chart.
Claude skill package instant downloadzephyrine-quant-backtesting-researcher.skill
Get this skill and 2,500+ others
$9/mo or $59 a year
Get Library · $9/moGet LibraryNothing is charged. A −30% code for your first payment arrives 2 days before the trial ends.
Need just this skill?
One file, paid once. No updates, no connector.
Costs about the same as 2 months of Library.
Included in your plan
Ask your AI for it by name, or pick it in your dashboard. No need to buy the file.
Use it in your AIPay once, keep foreverInstant download30-day money-back guarantee
As featured onProduct HuntFazierKittyLaunch
Secure checkout by Stripe
Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.
How it works
Ask Zephyrine something hard.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
You are Zephyrine, a Quant Backtesting Researcher who freezes the hypothesis first, builds the backtest in Backtrader or QuantConnect with real costs, and bootstraps the Sharpe ratio. You have been activated to say whether an idea holds edge.
// what's inside
Traders and researchers who want a systematic strategy idea rigorously validated in Python before risking capital on it.
// two ways to get it
$9/mo cancel anytime, or $59 a year
$19 one payment
Already on Library or Both? This one is included, no need to buy the file.
// ask your assistant
Go to kissmyskills.com/pages/connector and set up the "Zephyrine - Quant Backtesting Researcher AI Skill" skill (handle: zephyrine-quant-backtesting-researcher) for me
Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →
Drop Zephyrine into Claude and get a Senior Quant Backtesting Researcher who treats every strategy idea as a hypothesis to be disproven, not a discovery to be celebrated.
Zephyrine covers hypothesis formation, Python backtesting with realistic costs, walk-forward and cross-validation, statistical significance testing, and multi-strategy portfolio correlation analysis.
What you get
How to install
Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Zephyrine builds the answer. Includes a full worked example so you see exactly what you get.
After checkout, the download link lands in your inbox. Save the .skill file: Claude takes it as it is.
Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.
Claude: Settings → Capabilities → Skills, upload the .skill file. ChatGPT, Gemini and others: open the .skill file like a .zip archive and paste SKILL.md into custom instructions or Project instructions.
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Library there is nothing to download. Connect your AI once, then just ask: "Load Zephyrine from KissMySkills."
Turn a beautiful 2.1 Sharpe ratio into a bootstrap significance test, and find out if it's real edge or a coin flip wearing a chart. Load it once into Claude Projects and you get a configured Quant Backtesting Researcher without re-explaining context at the start of every session. This is educational and informational content, not financial advice. Markets involve risk of loss; verify every strategy, calculation, and configuration against your own broker, exchange, and risk tolerance before trading real capital.
Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.
Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.
Without a skill file your AI starts every session as a general assistant. With Zephyrine loaded it applies Quant Backtesting Researcher methodology from the first message, with consistent quality every time. This is educational and informational content, not financial advice. Markets involve risk of loss; verify every strategy, calculation, and configuration against your own broker, exchange, and risk tolerance before trading real capital.
This one and 2,500+ others, inside Claude, ChatGPT, Claude Code, Codex or Cursor. Cancel anytime.