Does it need the Shopify connection?

No. Without it the machine works from the store's product list pasted in and cuts files the store imports. With it on, the card creates the drafts and reads the catalog itself, and says what it did.

Will it publish for me?

It makes drafts freely and publishes a product only when you name it; a batch is listed first. That is the law on the face.

Where do prices come from?

From you, on the ladder or off it. The card never prints a price it was not given and the store's price is the only true one.

Can it attach the files?

No — that door is the app's and yours. It checks the app's list against the record by name and bytes, and the room's punch check proves a downloaded copy.

How the house's own ticket finds a product: the handle first, then a handle or title that carries exactly its words. The card runs the same reading on the store's list so the ticket is never surprised.

No. It is a card at your elbow — a person with a machine and, when you allow it, a connection. It stores nothing, runs no server and holds no key of its own.

THE PROOF · EVERY CARD, RUN BEFORE IT SELLS

Every card on the shelf, checked by a machine.

On Oct 5 2026 the studio ran THE VALIDATION CARD over every AI skill card packet it sells — 594 of them — with THE BATCH CARD. A card is not read and trusted: its machine is run, its files are counted against its list, its claims are checked against what is inside.

578READY TO SELL · marked PROVEN

16WORKS · NOT YET

0FAILING

What the marks mean

PROVEN — the card passed every check the machine runs, on that date. It appears on the card’s tile, its row on the shelf and its own page.
No mark — the card works but is not ready to sell yet: an app not yet sealed inside it, or a seat waiting on its contents. It gets its mark when it passes.

Check a card now, right here

Drop any card bought here. Your browser opens it, fingerprints its SKILL.md with SHA-256 and checks it against the studio’s register of all cards. Nothing is uploaded; nothing leaves this page.

Drop a card here, or tap to choose onea .skill.zip from lundr.tech

Check a card by hand

Every card carries a punch: the first 24 characters of the SHA-256 of its SKILL.md, printed on its face and its page. Unzip the card and run:

shasum -a 256 SKILL.md

The first 24 characters must match the punch. If one character differs, the card is not the one the studio cut.

What is checked

The machine runs, its self-test passes, and it meets bad input with a message, not a crash.
Every file the card lists is in the box, at the size and fingerprint it lists.
What the card claims is in the box is in the box.
The thing sold is inside it — never an empty slot.

THE VALIDATION CARD and THE BATCH CARD are on the shelf too, for anyone who sells cards of their own. THE VALIDATION CARD →