WS Checkout Control
Precision rules for Shopify checkout.
shopify.functions.payment_customization {
action: HIDE,
target: "Cash on Delivery",
when: cart_total > 500
}Test Checkout Condition Evaluation
Adjust cart values and destinations to observe real-time payment gateway and delivery rate customization.
Live Checkout Condition Tester
Cash on Delivery and prioritize Direct Bank Wire.Precision Rules Without Checkout Deadlocks
Runs in <5ms directly on Shopify's global edge with built-in fail-open safety guards.
High-Performance Rust WebAssembly
Executes inside Shopify's checkout runtime infrastructure in under 5 milliseconds with zero external API calls.
#[shopify_function]
fn run(input: input::ResponseData) -> Result<output::FunctionResult> {
// Instant edge evaluation
}Fail-Open Safety Guard
Prevents checkout deadlocks by verifying that at least one valid payment and shipping method remains visible.
Multi-Signal Conditions
Filter by Cart Amount, Currency, B2B state, Line Count, Weight, ZIP codes, and Customer tags simultaneously.
Live Rule Simulation Suite
Simulate complex cart states with differing items, postal codes, and customer tiers to verify rule output instantly.
Complete payment, shipping, and pickup rule management.
18+ condition signals including Cart Value, Currency, B2B Company, Customer Tags, Weight, and Postal Code.
Payment & Delivery Customization
Hide, rename, and reorder payment gateways, shipping rates, local delivery, and pickup options dynamically.
Multi-Signal Rule Engine
Trigger actions based on cart total, currency, item quantity, weight, postal code, province, B2B company, customer tags, or SKU.
Zero-Log Privacy Signals
Classifies buyer geo-location and postal policy signals strictly in memory without ever writing raw IP addresses to the database.
Native Shopify Functions
Compiled to Rust WebAssembly to execute instantly at Shopify's global edge without third-party server latency.
High-Value & Pickup Presets
Pre-built workflows for prioritizing bank transfers on orders exceeding thresholds and restricting pickup options by territory.
Interactive Rule Simulator
Test checkout conditions and inspect outcome payloads against simulated shopping carts before going live.
Technical Specifications
- Execution Engine
- Shopify Functions (Rust / WebAssembly)
- Admin Stack
- Next.js 16 + Shopify App Bridge v4 + Polaris
- Database
- PostgreSQL with Prisma Client
- Execution Latency
- < 5ms (Shopify global edge)
- Required Plan
- Standard Shopify plans & Shopify Plus
Simple, predictable plans for high-converting checkouts.
Start free with essential rules or upgrade to Pro for B2B triggers and high-value presets.
Standard
Essential payment and shipping customizations.
Pro Rule Engine
Unlimited rules, B2B triggers, postal code routing, and high-ticket presets.
Ready to take full control of your checkout options?
Install WS Checkout Control today and streamline payments with native Shopify Functions.