Checkout validation — enforce rules where it matters

Most order limit apps only show a cart warning. Customers bypass it. Nex MOQ blocks the actual checkout using Shopify's native Checkout Validation API.

Get it on Shopify App Store

The problem

Cart-only limits are suggestions, not rules

Many apps add JavaScript to your cart page. But customers bypass it every day through these paths:

Direct checkout URL — skips cart page entirely
Shop Pay, Apple Pay, Google Pay — bypass cart
Buy Now buttons — straight to payment
Cart drawer apps — don't trigger scripts
Bots and dev tools — modify cart directly

Customer checkout paths

Cart page

Warning shown

Checkout

Bypass paths (skip cart warning)

Shop Pay Apple Pay Buy Now Direct URL Bots

Nex MOQ validates ALL paths

Server-side, inside Shopify checkout

How checkout validation works

A server-side validation running inside Shopify's checkout infrastructure.

Add to cart

Cart warning shown if rules aren't met

Proceed

Customer enters checkout

Validate

All rules checked server-side

Pass

Payment proceeds normally

Block

Error shown, payment blocked

Min quantity

Per product, variant, collection, or cart

Min amount ($)

Per product, collection, or cart total

Max quantity

Per product, variant, collection, or cart

Max amount ($)

Per collection or cart total

Two layers of protection

The cart page guides. The checkout blocks. Together, they create a complete solution.

Layer 1: Cart page

"Add 2 more items to meet the minimum of 6."

Friendly guidance. Most customers adjust here without ever hitting the hard block.

Layer 2: Checkout

"Your order does not meet the minimum purchase requirement."

Safety net. Catches all bypasses — direct URLs, accelerated checkout, bots.

Custom error messages

Write exactly what customers see. Supports dynamic values and multiple languages.

Cart warning examples

"Minimum order is 6 items. Please add 4 more."

"Add $18.00 more to reach the $50 minimum."

Checkout block examples

"Maximum quantity for this item is 2 per order."

"Wholesale orders require a minimum of $500."

Built on Shopify's native platform

No JavaScript, no external servers, no theme conflicts. Just Shopify Functions running server-side.

0ms

Page load impact

100%

Checkout paths covered

All

Shopify plans supported

Regular checkout

Standard cart-to-checkout flow

Accelerated checkout

Shop Pay, Apple Pay, Google Pay

Buy Now buttons

Dynamic checkout buttons

Draft orders

Admin-created orders

API checkouts

Headless and custom storefronts

Any theme

No code changes needed

Ready to enforce order limits?

Start your free trial. No code required. Works on all Shopify plans.

Get it on Shopify App Store View Pricing

Plans from $9.99/month after free trial · Free for dev stores