One-click Checkout Development Guide
Learn how to develop one-click checkout extension.
Follow these development best practices before starting extension development to ensure a smooth, efficient, and maintainable process.
📄️ Inject Scripts
Inject scripts into Fynd Commerce storefronts to intercept Buy Now and Checkout actions for one-click checkout extensions. Use injectable tags and fpi.mutations.apply for custom checkout flows with payment gateways.
📄️ Controllers
Build payment verification and order controllers for one-click checkout extensions on Fynd Commerce. Server-side logic for buy now endpoints, payment initiation, and anonymous cart user resolution at checkout.
📄️ Payment Handler
Handle payment responses and process callbacks from payment gateways in one-click checkout extensions. Secure post-payment processing to prevent fraud, duplicate charges, and order sync issues.
📄️ Verify Payment
Verify payment signatures and complete Fynd Platform checkout mutation after gateway callback in one-click checkout extensions. Covers address extraction, payment status updates, and anonymous cart resolution.
📄️ Redirection
Redirect customers to success or failure pages after payment in one-click checkout extensions with correct order details. Post-payment URL structure and confirmation flow for Fynd Commerce storefront checkout.