Shopify
ThirdLedger installs as a standalone public Shopify app. Merchants do not paste a custom-app client secret.
Available to build
The app reads orders and products needed to match 3PL charges. It does not write products or mutate fulfilments. Shopify-installed customers are billed through Shopify billing, not Stripe.
Live OAuth credentials are not configured in this environment. The connection screen will stay disconnected until those credentials exist.