NEW WAYS TO EXTEND CHECKOUT IN 2025
💬 Chat apps in checkout
Add real-time support using the Chat API
• Use the chat component to embed custom UI
• Query checkout and store information
• Handle mobile-specific size constraints
🖌️ Line item customization
Set up how products display in the order summary for better visual hierarchy
• Configure custom aspect ratios for thumbnails
• Set image fit and badge background color
• Implement responsive image rendering rules
🔐 Gift card restriction in checkout
Disable gift cards with custom logic through the Payment Customization Function API
• Restrict gift cards with conditional logic
• Create validation rules for customer segments
• Hide input field and remove applied gift cards
📦 Metadata for delivery options
Extend shipping options with the Delivery API
• Store custom data for each delivery options
• Handle delivery option selection states
• Track shipping option changes automatically
📥 Draft order support
Build extensions that load in draft orders
• Implement cart instruction validation checks
• Handle API availability states
• Prevent cart line and note modifications