🃏 Deck-break week — use code BREAKEVEN at checkout for 30% off (capped at £5).

Colophon

Built on Suluk — the OpenAPI v4 "Moonwalk" candidate framework.

Built on Suluk

The Card Pyramid is a storefront, not a framework. Every order, cart, and ledger you touch here runs on Suluk, the open OpenAPI-v4 framework. We didn't reinvent the plumbing — we opened a deck on top of it.

The underlying @suluk/* packages are a candidate exploration of OpenAPI v4 (not the official specification) and are licensed Apache-2.0. See the Suluk repository for the source, the spec notes, and the licence in full.

This store

The card-pyramid concept, the copy, the catalogue, and the pricing theatre are ours. The honest part: the "pyramid scheme" is a joke about pricing — there's no investment, no returns, and no one to recruit. We open Bicycle decks, sell the exact cards you want, and price your order by how much damage it does to the remaining stock.

Third parties

Better Auth, Stripe, Drizzle, Hono, Astro, and Scalar are each governed by their own licences. We're grateful to all of them.

Independent seller — not affiliated with or endorsed by Bicycle® / The United States Playing Card Company.