Shopify Integrations & API Development
A Shopify store on its own does a lot, but most businesses need it to talk to other systems. Whether it's pulling data from an external API, connecting to accounting software, or building custom functionality that Shopify doesn't offer out of the box, we build the integrations that make it work.
Custom API Integrations
We connect Shopify stores to external services and APIs using both the Shopify REST and GraphQL Admin APIs. If there's an API for it, we can integrate it.
Business & Verification APIs
- Companies House API - Automated company registration lookups and verification directly within your store. Useful for B2B stores verifying business customers.
- HMRC VAT Checker - Real-time VAT number validation
- Address Lookup - Postcode and address verification for accurate deliveries
Commerce Integrations
- Payment Gateways - Stripe, PayPal, Klarna, Clearpay integration
- Accounting - Xero, QuickBooks, FreeAgent syncing
- Shipping - Royal Mail, DPD, DHL automated labels and tracking
- CRM - HubSpot, Salesforce customer data connection
- Email Marketing - Klaviyo, Mailchimp, Omnisend automation
How We Built This Site
This very website - ecommdevelopment.co.uk - was built and managed entirely through the Shopify Admin API. Every page, blog post, image upload, theme modification, and menu update was done programmatically via API calls. That's the level of API expertise we bring to every project.
We used:
- REST Admin API for pages, blog posts, and theme asset management
- GraphQL Admin API for file uploads, menu management, and complex queries
- Staged Upload Flow for uploading images via Google Cloud Storage targets
- Theme Asset API for programmatic CSS injection and template configuration
Shopify Admin API Development
- Product Management - Bulk product creation, updates, and variant management via API
- Order Processing - Custom order workflows, automated fulfilment, and order tagging
- Customer Data - Customer segmentation, tagging, and data export automation
- Theme Management - Programmatic theme updates, section configuration, and asset management
- Metafields - Custom data storage on products, collections, customers, and orders
- Webhooks - Real-time event notifications for orders, products, customers, and inventory
Storefront API & Headless Commerce
For stores needing complete front-end flexibility, we work with Shopify's Storefront API to build headless commerce solutions using React, Next.js, or any framework.
| REST API | Traditional request/response integration for straightforward data access |
| GraphQL API | Efficient, flexible queries that fetch exactly the data you need |
| Storefront API | Customer-facing API for headless commerce and mobile apps |
| Webhooks | Real-time event-driven integrations that respond instantly to store changes |
Get in touch to discuss your integration requirements.