n-Shift4Shop Still Runs on 3dcart's API. Rebranded Integrations Don't Rebuild Themselves.
Shift4Shop, the platform rebranded from 3dcart after Shift4's acquisition, provides a REST API covering orders, products, and customers, documented under both names depending on how old the reference you find happens to be. The API itself works the same regardless of which name is on the login page. What doesn't happen automatically is anything using it, QuickBooks sync, marketplace listings, dropshipping supplier feeds, which still has to be built, whether the store's been on Shift4Shop for years or just rebranded last month.
What Shift4Shop's (3dcart's) API actually covers
The API authenticates with a token generated in the store's admin panel and exposes the standard set of commerce objects: orders, products, customers, and categories, all reachable as structured data rather than through the admin UI. Documentation and examples online are a genuine mix of 3dcart-branded and Shift4Shop-branded material, since the underlying platform and API didn't change shape when the name did.
It covers the integrations most stores actually need: pulling orders out as they're placed, pushing product and stock updates in, and syncing customer records. Since Shift4Shop is owned by Shift4, a payments company, payment and order status tend to sit close together already inside the platform, which is useful context when building a sync that needs to know whether an order's actually been paid for, not just placed.
What it doesn't include is a built-in bridge to any specific outside system. There's no native QuickBooks connector, no native Amazon or eBay sync, and no built-in dropshipping supplier feed. Those searches, 3dcart quickbooks integration, 3dcart amazon integration, shift4shop dropshipping, show up because the platform leaves that work to a third-party app or a custom build.
Where a rebrand like this actually creates integration work
A platform rebrand doesn't touch the underlying API or database, but it does touch every piece of documentation, every tutorial, and every half-finished integration someone built years ago and never revisited. A store that's been quietly running the same 3dcart-era integration since before the Shift4 acquisition is worth checking, not because it's necessarily broken, but because nobody's confirmed it isn't.
The practical fix is the same whether a store calls itself 3dcart or Shift4Shop: build and maintain the integration against the actual API, not against whichever name happened to be on the tutorial someone followed five years ago.
What we build on top of Shift4Shop's API
Orders and payment status flowing into accounting together
Since Shift4Shop ties payment status to orders directly, we sync both into QuickBooks or your ERP at once, so a payment confirmation and an order don't need to be cross-checked by hand.
Marketplace and dropshipping feeds that don't need manual uploads
Product and stock data syncs out to Amazon or eBay listings, and supplier dropshipping feeds sync back in, instead of someone exporting and uploading spreadsheets on a schedule.
Still running an integration built back when this was called 3dcart?
Tell us what it's supposed to do, and we'll check whether it's still working the way you think it is.
Running Shift4Shop, or still calling it 3dcart, and bridging systems by hand?
Tell us what's not connected yet, accounting, a marketplace, a dropshipping supplier, and we'll build it against the platform's real API. We take the same approach for any other part of your business that's still running on manual exports, with or without a rebrand involved.
Let's talk