Software customized to your business and Shift4Shop.

Describe the app you need. Our AI engineers build it around 100% of your workflow, connect it to Shift4Shop and keep it running. Typically ready to test in 1–2 weeks.

Book a demo

No developers needed. Free test version before you commit.

Customer	PO	Status
Bayview Foods	PO-88231	Created
Metro Supply	PO-1197	Created
Harbor Grill	PO-5520	Price check
Lakeside Deli	PO-0412	No stock

Yes, you can get custom software that connects with Shift4Shop.

Yes. Mercovano builds custom business software that connects directly to Shift4Shop through Shift4's REST API. Our AI engineers design it around how your team works, and it reads and writes Shift4Shop data such as orders, products, customers.

Shift4ShopShift4 · Ecommerce & marketplaces

Reads and writes

OrdersProductsCustomersInventoryRefundsFulfillments

Your appsApprovals · rules · forms

Apps you can build on Shift4Shop.

Each one is its own app, built around your rules and connected to Shift4Shop, so nothing is typed twice.

Customer	PO	Status
Bayview Foods	PO-88231	Created
Metro Supply	PO-1197	Created
Harbor Grill	PO-5520	Price check
Lakeside Deli	PO-0412	No stock

Order	Reason	Status
#48211	Wrong size	Refunded
#48197	Damaged	Photo review
#48190	Changed mind	Awaiting item
#48176	Late delivery	Store credit

Item	Ordered	Status
Steel brackets	400	Received
M8 bolts	2,000	Short 200
Pallet wrap	12	Received
Gaskets	150	Damaged

Customer	Overdue	Status
Harbor Group	$18,400	Promise Fri
Lakeview Partners	$6,200	Reminder 2
Crest Media	$3,950	60+ days
Pine & Co.	$1,120	Paid

How it connects to Shift4Shop.

Vendor: Shift4
Category: Ecommerce & marketplaces
Connection: Direct API, no middleman
API type: REST
Access: Open API. We connect with your own Shift4Shop sign-in; no vendor approval is needed.
Real-time updates: Confirmed during setup.
Writing back to Shift4Shop: Confirmed during setup.
File import fallback: Confirmed during setup.

From a description to a working app.

01
Describe the app you need
In your own words: how the work runs today, who approves what, and which systems it touches. Click through a first version and change anything.
02
We build it and connect your systems
Our AI engineers build it on your data. Your admin grants access to your systems, with exact steps from us; we do the rest.
03
Test, launch and improve
Test it free on your own data before you commit; typical apps are ready to test in 1–2 weeks. When your process changes, the app changes with it.

No developers on your side. Just someone who knows how the work gets done.

See how it works in detail →

100% your workflow

Your steps, approvals and policies, not Shift4Shop's defaults.

Connected to Shift4Shop

Approved work lands in Shift4Shop without anyone re-typing it.

One platform, many apps

Every app shares the same Shift4Shop connection, sign-in and roles. Add the next one when you need it.

Shift4Shop and Mercovano, answered.

Can I get custom software that connects with Shift4Shop?

What apps can I build on Shift4Shop?

Teams build order intake, returns and refunds, customer onboarding, receiving and inventory, collections and cross-system reporting on Shift4Shop, each with their own approval rules, forms and policies. If you can describe the process, we can build it.

How does the software connect to Shift4Shop?

Open API. We connect with your own Shift4Shop sign-in; no vendor approval is needed. The connection uses Shift4Shop's REST API.

Do I need a developer or IT team?

No. Our AI engineers build, connect, host and maintain your apps. You describe how the work runs today and test it on your own data.

How long does it take?

Typical projects are built and ready to test within 1–2 weeks of going ahead.

How is it priced?

You pay for the software you need, nothing more: no per-user pricing and no implementation fees.