Extend Shopify with Custom Apps and Headless Commerce

Bookuvai builds custom Shopify integrations, embedded apps, headless storefronts, and backend automation to scale your e-commerce operations.

Integration: Shopify (E-commerce)

Shopify is the leading e-commerce platform, and its extensible APIs make it possible to build custom apps, headless storefronts, and deep integrations with ERP, CRM, and fulfillment systems. Bookuvai develops Shopify integrations using the Admin API, Storefront API, and App Bridge for embedded apps. We build custom checkout extensions, product recommendation engines, inventory sync systems, and headless storefronts with Hydrogen or Next.js for maximum performance and design flexibility.

Capabilities

  • Custom Shopify Apps: Build embedded apps using App Bridge and Polaris that extend Shopify Admin with custom functionality, data views, and workflow automation.
  • Headless Storefront: Create custom storefronts using Shopify Storefront API with Hydrogen, Next.js, or React for full design control and optimized performance.
  • Inventory & Order Sync: Synchronize product catalog, inventory levels, and orders between Shopify and external systems like ERPs, warehouses, and POS.
  • Checkout Extensions: Build Shopify Functions and checkout UI extensions for custom discounts, shipping rates, payment validation, and upsell widgets.
  • Webhook & Event Automation: Process Shopify webhooks for order events, inventory changes, and customer actions to trigger fulfillment, notifications, and CRM updates.

Implementation Steps

  1. App Setup & Authentication: Register the app with Shopify Partners, configure OAuth for shop installation, and set up App Bridge for embedded admin experiences.
  2. API Integration: Build GraphQL queries against Shopify Admin or Storefront APIs, implement rate limiting and pagination, and handle API versioning.
  3. Webhook Processing: Register mandatory and custom webhooks, implement HMAC verification, and build event processors for order and inventory lifecycle events.
  4. Testing & App Store Submission: Test with development stores, perform security review, prepare app listing assets, and submit for Shopify App Store review if applicable.

Tech Stack

  • Shopify API: Admin, Storefront, and Functions APIs
  • Remix / Next.js: App and storefront framework
  • Polaris: Shopify-native UI components
  • Node.js: Webhook processing and API middleware

Frequently Asked Questions

Should I build a custom app or use an existing Shopify app?
If an existing app covers your needs, use it. Custom apps make sense when you need unique business logic, deep integration with internal systems, or functionality not available in the app store.
What is headless Shopify and when does it make sense?
Headless Shopify uses the Storefront API for a custom frontend while Shopify handles the backend. It makes sense when you need full design control, better performance, or a unified frontend across multiple sales channels.
How long does a Shopify App Store submission take?
The review process typically takes 5-10 business days. We handle the submission checklist, including security requirements, accessibility compliance, and listing asset preparation.