Stack~
18 October 2026 7 min Members tarot qpmn print-on-demand verification

Selling tarot through someone else's POD API

The press is rented. Everything that can go wrong on the way to the press is ours — which is why the deck has eight verifiers and no order button.

Labels. [MEASURED] — from a receipt or a probe in the pack. [FACT] — a file you can check. [OPINION] — mine.

The tarot tool is a private workspace inside Metatron for assembling a 78-card deck and getting it printed. It is deployed, allowlisted to two identities, and public at a URL that refuses everyone else [FACT, tarot-readme.md].

It also has no order button, and that is the most honest thing about it.

The provider is QPMN (QP Market Network), the only print provider in the codebase. The store is MetatronMind, the product is Tarot Cards (2.75" × 4.75") on QPMN’s Card_Set profile, and the order carries 18 print attributes — stock, quantity, printing, finish, packaging, booklets, seals [FACT, qpmn-api.md]. The API’s own sample order comes to $69.17 per deck, quantity 1 [MEASURED, the probe receipt]. No minimum order, no inventory, no shipping relationship of our own. That is the deal print-on-demand offers, and it is a good one.

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The proof pack — attachments

Included with the piece — 12 files, 105 KB. Sign in as a member to download.

  • Reader brief — verify a print-on-demand pipeline before money 00-reader-brief.md · 7.1 KB · sha256 3c10c69e
  • Licence — personal use licence.md · 0.5 KB · sha256 cd1f7f1c
  • Making an order, and what is blocking one making-an-order.md · 9.4 KB · sha256 3d4f04b9
  • The provider probes, reduced probe-receipts.md · 2.3 KB · sha256 f4a58151
  • The QPMN print API — provider reference qpmn-api.md · 24.0 KB · sha256 407d66d7
  • The order provider, IDs and payload shape qpmn-order-provider.md · 17.0 KB · sha256 8596a915
  • How to reproduce the verification reproduce.md · 1.6 KB · sha256 432ff154
  • The deck-to-provider slot index (78 rows) slot-index-map.tsv · 9.3 KB · sha256 85a07bf7
  • What runs on the box tarot-on-box.md · 10.3 KB · sha256 56fb846e
  • Provenance — including the lost plan tarot-provenance.md · 6.9 KB · sha256 e0c1847c
  • The tarot workspace — what exists and where it stops tarot-readme.md · 9.0 KB · sha256 fe8a1a77
  • What was proven, and how to re-run it tarot-verification.md · 8.1 KB · sha256 890c5e9e