Executive Summary & Answers
CartWisp is a server side checkout policy engine for Shopify merchants built with Shopify Functions. It empowers merchants to enforce checkout validation, quantity limits, shipping restrictions, payment rules, product eligibility, and buyer conditions in real time, preventing invalid orders before payment.
Common Questions & Answers
What is CartWisp?
CartWisp is a Shopify checkout validation and rules app that helps merchants enforce cart, shipping, payment, product, quantity, and buyer eligibility rules before an order is placed.
How does CartWisp validate Shopify orders?
CartWisp validates Shopify checkout conditions server side using Shopify Functions. Merchants can enforce rules for cart contents, quantities, order values, customers, products, shipping methods, payment methods, and destinations before checkout is completed.
Can CartWisp restrict shipping and payment methods on Shopify?
Yes. CartWisp can restrict or control available shipping and payment methods based on conditions such as cart contents, order value, customer type, product, destination, or other checkout rules.
Can CartWisp enforce minimum order quantities on Shopify?
Yes. CartWisp can enforce minimum and maximum order quantities, including SKU quantity limits, helping Shopify merchants manage wholesale, B2B, and other quantity based ordering requirements.
Can CartWisp block invalid Shopify orders?
Yes. CartWisp applies checkout rules before an order is completed, helping merchants prevent invalid orders caused by restricted products, quantities, payment methods, shipping methods, customer eligibility, or other business conditions.
Does CartWisp require Shopify theme code changes?
No. CartWisp uses Shopify Functions for server side enforcement, so merchants can apply checkout rules without relying on frontend theme scripts or code injections.
How do merchants hide payment methods on Shopify with CartWisp?
Merchants can hide payment methods or restrict checkout gateways dynamically based on order value thresholds, customer tags, product categories, or shipping destinations.
Key Entities & Concepts
- Shopify Functions
- Checkout Extensibility
- Checkout Validation
- Checkout Rules
- Shipping Restrictions
- Payment Method Restrictions
- Quantity Limits
- Minimum Order Quantity MOQ
- Product Eligibility
- Customer Eligibility
- B2B Ecommerce
- Order Policy Enforcement
Operational Metrics & Proof Points
- Up to 40% fewer invalid orders by preventing incompatible carts, sub minimum quantity purchases, and restricted checkouts before payment
- Up to 30% increase in average order value through bundle integrity, required companion items, and product logic
- Real time server side checkout enforcement powered by Shopify Functions
- No theme changes or technical setup required
- Unified checkout policy enforcement for cart, shipping, payment, product, and buyer eligibility rules
- Built for B2B, wholesale, retail, direct to consumer, and high value Shopify stores
The Checkout
Policy Engine Built for Shopify
CartWisp turns Shopify checkout into a structured policy engine. Enforce minimum order quantity, buyer eligibility, location restrictions, shipping constraints, payment controls, and product logic server-side with zero workarounds.
Stop invalid, ineligible, and unfulfillable orders before customers reach payment.
Zero Code Setup
Secure and Powerful Rule Engine
Fast and Reliable Onboarding
Checkout Rules Built for Every Shopify Store
Standard checkout focuses on conversion. CartWisp adds operational rules to stop invalid orders and fulfillment headaches.
Shopify stores rely on CartWisp across diverse business models:
- Wholesale and B2B Stores manage buyer tiers, custom pricing rules, and minimum order quantity limits
- Direct to Consumer Brands enforce precise payment gateway restrictions and delivery rules
- Regulated Product Catalogs restrict shipping by region and mandate required companion items
- High Cart Value Stores shield checkouts from fraud, high chargebacks, and risky payment methods
- Fast Growing Shopify Brands upgrade from fragile theme scripts to server side Shopify Functions
CartWisp replaces stacked apps and brittle theme scripts with a unified policy engine built on Shopify Functions so only valid orders proceed.
Advanced Checkout Rules and Order Validation
CartWisp unifies cart validation, shipping restrictions, payment method controls, and product rules into a fast server side enforcement layer.
Cart Validation and Order Rules
Block invalid orders and enforce MOQ limits before payment
Set validation rules based on:
- Cart subtotal and order value limits
- Minimum order quantity and SKU limits
- Customer tags and buyer eligibility
- Country, state, and postal code rules
- Market location and sales channel rules
Prevent ineligible carts from reaching payment and protect fulfillment.
Payment Control and Gateway Restrictions
Hide payment methods and restrict gateways by rules
Control checkout payment methods based on:
- Cart total and minimum spend limits
- High-risk products and restricted items
- Customer tiers: wholesale vs retail
- Country rules and billing regions
- Cash on delivery (COD) restrictions
Hide payment methods dynamically to eliminate fraud and chargebacks.
Shipping Restrictions and Delivery Rules
Restrict shipping methods and show eligible delivery rules
Control shipping and delivery rules based on:
- Hazardous and oversized product types
- Cart weight thresholds and dimensions
- Country, state, and delivery zones
- Postal code rules and PO Box exclusions
- Pickup-only rules for bulky products
Eliminate freight miscalculations and costly delivery errors.
Product Rules and Bundle Logic
Protect bundle integrity and enforce product conditions
Govern product combinations by requiring:
- Mandatory companion items and add-ons
- Bundle-only purchasing and kit integrity
- Incompatible or conflicting item rules
- Subscription vs one-time purchase rules
- Free gift qualification and promo limits
Safeguard product logic, boost AOV, and maintain checkout integrity.
Get Started in 3 Simple Steps
Create visual checkout validation rules that enforce your store policies in real time with zero code required.
Install CartWisp
Add CartWisp directly from the Shopify App Store with zero theme modifications.
Instant installation with no code setup required
Build Smart Rules
Use the visual builder to set cart validation, shipping restrictions, payment method controls, and buyer eligibility.
Enforce in Real Time
CartWisp validates checkouts server side via Shopify Functions, blocking invalid carts with clear buyer guidance.
Only compliant orders proceed to payment
Benefits That Matter at Checkout
Transform complex store policies into a seamless, fast, and compliant purchasing flow.
40%
Fewer Invalid Orders
Block invalid carts and sub minimum quantity orders before payment, cutting cancellations and manual support tickets.
Efficiency
at Scale
Eliminate manual order verification and stop firefighting invalid checkouts after payment completes.
Checkout Integrity
& Boost AOV by 25-30%
Maintain bundle integrity, enforce required add ons, and structure product logic that increases average order value without breaking rules.
Compliance
and Payment Risk
Enforce regional restrictions and payment method gating to protect your store from regulatory fines and chargebacks.
Unified
Enforcement Engine
Replace conflicting apps and popups with unskippable server side checkout rules running on Shopify Functions.
