WAKES WHEN buy buttons, add-to-cart or a product page's buying area is being designed or fixed; a store's buttons behave differently page to page, or buyers drop off between the button and the cart; scarcity, urgency, sticky or launch bars, sold-out states
THE LOOP
NAME — `This is THE FEHU CARD.`
ASK — which store, which buy controls. The store's live numbers are the session's source of truth.
MAP — every buy control: its role (primary · second · quiet), its states, the truth line it prints.
DRESS — one grammar: the states, one press colour, the headstone, the launch bar with one job.
AUDIT — two primaries in a section, a figure not from the store, a scarcity line not from live stock: each named and fixed.
PROVE — press every control at phone and desktop widths; each answers on the button; write the ledger.
NEVER
prints a countdown, a fake viewer or an invented stock
hides a sold-out or a late cost
sets a price
THE SEAL 68 of 100 · EPIC · MANIFEST · a method seat, words only, no machine aboard and no witnessed run yet
IT CAN BE WRONG an AI reading a text file: it can be wrong; check what matters. THE-CLAUSES.md rides in the packet and is part of the licence.
THE PUNCH · SHA-256 OF SKILL.MD · 41979BB9FF4C5330F2439576
CITE THIS CARDTHE FEHU CARD, Edition 1. Lund Studio LLC, Westminster, Colorado. https://lundr.tech/?view=fehu-card. Punch 41979BB9FF4C5330F2439576. Retrieved 2026-10-10.
What it is.
One grammar for every buy control on a store. Every click answers on the button itself; the whole price the buyer will pay prints at the button; scarcity shows only at the decision and only from live numbers; the sold-out stays visible as proof the count was real.
It teaches the method the studio's conversion engine runs — the states, the three roles, one press colour, a launch bar with exactly one job — drawn from published checkout research and the honest-persuasion canon. The engine itself is licensed separately; this card carries the method.
It refuses the dark patterns by design: no countdown, no fake viewer count, no invented stock. If the platform does not say it, the card will not print it.
Its laws, written into the card.
EVERY CLICK ANSWERS ON THE BUTTON. rest → busy → ABOARD → rest; the button that was pressed says what happened.
THE TRUTH LINE PRINTS AT THE BUTTON. The whole price the buyer will pay, from one constant — never a surprise at checkout.
SCARCITY ONLY FROM LIVE NUMBERS, ONLY AT THE DECISION. Stock is clamped to the real count; zero renders the headstone.
ONE PRIMARY PER SECTION. Two primaries in one section is a fault the audit names.
THE SOLD-OUT STAYS. GONE FOR GOOD is proof the count was real; it is never hidden.
NO DARK PATTERN, EVER. No countdown, no fake viewers, no invented stock, no pre-ticked extras.
How it works, once your AI has it.
NAME — `This is THE FEHU CARD.`
ASK — which store, which buy controls. The store's live numbers are the session's source of truth.
MAP — every buy control: its role (primary · second · quiet), its states, the truth line it prints.
DRESS — one grammar: the states, one press colour, the headstone, the launch bar with one job.
AUDIT — two primaries in a section, a figure not from the store, a scarcity line not from live stock: each named and fixed.
PROVE — press every control at phone and desktop widths; each answers on the button; write the ledger.
When it says no.
The cart's and checkout's own rules → the store's checkout and the house's cart card; this card dresses the controls.
Headlines and product copy → a copy seat; this card writes only the truth line.
Setting a price → never; the store's price is the only one.
A countdown, a viewer counter or a stock figure the platform did not give → refused, and the card says why.
What’s in the buy.
CARD.md — the whole card · SKILL.md — the door your AI reads first · START-HERE.md — the first five minutes
references/FEHU.md — the method, written down
MY-LEDGER.md · TIN.md · LICENSE-NOTE.md · THE-CLAUSES.md · card.svg + card-machine.svg + card.json · card.html · the doors for ChatGPT, Gemini, Cursor, Copilot and the rest, and an MCP door
PROOF · A METHOD SEAT · AUDIT 12/12 · NO MACHINE ABOARD, NONE CLAIMED · EDITION 1 · PUNCH 41979BB9FF4C5330F2439576
ON EVERY DOOR · A CARD FOR YOUR AI, A FILE FOR YOUR COMPUTER
In Claude: turn on code execution under Settings › Capabilities, then Customize › Skills › + › Create skill, and upload the zip as it is — START-HERE.md in the box walks you through it, and tells you how to keep the ledger. In ChatGPT, Gemini and the rest: a Project, a GPT or a Gem with the card’s files attached and the short door in the box pasted as its instructions. The words run anywhere an AI reads Markdown; the machines run wherever the host runs Python. Witnessed in Claude only. The host marks →
Take it.
Nº 417 PROPOSED · ONE PAYMENT
Sold as is under the term printed. A card instructs an AI you operate; results depend on your model, your files and your judgement. Not legal, tax, medical or financial advice. The terms →
One payment. The file is yours to keep and keeps working at its edition; new editions issued in the year after you buy reach you by email as replacement files. Tax is added at checkout where it applies. Nothing auto-renews.
ONE PAYMENT — NOTHING RENEWS ITSELF. CHECKOUT IS SHOPIFY’S OWN; YOUR CARD COMES BY EMAIL AFTER IT.
