The Checkout
Policy Engine Built for Shopify
CartWisp turns Shopify checkout into a structured policy engine. Enforce MOQ, buyer eligibility, geo restrictions, shipping constraints, payment controls, and product logic: all server-side, all unskippable.
Stop invalid, non-compliant, and unfulfillable orders before they reach fulfillment.
No Hacks, No-code Setup
Secure & Powerful Rule Engine
Easy & Fast Onboarding
Checkout Isn’t the Problem. Lack of Enforcement Is.
Shopify checkout is optimized for conversion, not operational governance.
That’s why modern Shopify merchants use CartWisp to:
- All Shopify Merchants: B2B, B2C, Wholesale, Retail
- DTC brands that need precise control over payment, shipping, and product rules
- Wholesale & B2B stores managing tier-based access and checkout restrictions
- High-AOV stores that need safer payment and checkout validation
- Growing stores upgrading from rigid or legacy checkout-rule apps
CartWisp replaces scripts, popups, and fragmented apps with a unified, server-side checkout policy engine, enforcing cart, shipping, payment, and product rules in real time so only valid orders reach fulfillment.
One Engine. Total Checkout Governance.
CartWisp unifies cart validation, shipping controls, payment gating, and product rules into a single enforcement layer.
Cart Validation Engine
Block Invalid Orders Before Payment
Define multi-condition rules based on:
- Cart subtotal or quantity thresholds
- SKU-level limits and MOQs
- Customer tags and eligibility
- Destination country, state, or ZIP
- Market or sales channel
Prevent orders that violate business policy before checkout completes.
Payment Control Engine
Restrict Risky or Ineligible Payment Methods
Control payment methods based on:
- Order value thresholds
- Product risk categories
- Customer segment (B2B vs retail)
- Country-specific rules
- High-AOV cart protection
Reduce chargebacks. Reduce fraud exposure. Improve control.
Shipping Control Engine
Ensure Only Valid Shipping Methods Appear
Enforce shipping eligibility based on:
- Product type (hazmat, oversized, regulated)
- Cart weight or dimensions
- Destination region
- Postal code restrictions
- Pickup-only enforcement
Eliminate fulfillment errors and freight miscalculations.
Product & Bundle Logic Engine
Structure Product Relationships at Checkout
Enforce:
- Mandatory add-ons
- Bundle-only purchasing
- Forbidden combinations
- Subscription vs one-time restrictions
- Free gift conditions
Drive higher AOV while maintaining checkout integrity.
Get Started in 3 Simple Steps
Create structured checkout rules that automatically enforce your policies in real time — no code required.
Install CartWisp
Add CartWisp to your Shopify store directly from the Shopify App Store.
No theme changes. No technical setup.
Create Smart Rules
Use the visual rule builder to define cart validation, shipping restrictions, payment controls, product logic, and buyer eligibility rules — all in one place.
Enforce Checkout in Real Time
CartWisp runs your rules server-side using Shopify Functions, automatically validating every checkout.
Only compliant, eligible carts proceed. Invalid ones are blocked with clear guidance.
Benefits That Matter at Checkout
Turn complex operational and compliance logic into a smoother, safer, and more predictable checkout experience.
40%
Fewer Invalid Orders
Prevent incompatible carts, under-MOQ orders, and restricted purchases before payment: reducing cancellations and manual fixes.
Efficiency
at Scale
Eliminate manual order reviews, reduce support tickets, and stop firefighting invalid checkouts.
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
& Payment Risk
Enforce geo restrictions, age gating, freight logic, and payment method controls to protect your store from regulatory and chargeback exposure.
Unified
Enforcement Layer
Replace scripts, popups, and stacked rule apps with a single, structured checkout policy engine built natively on Shopify Functions.
