Shopify API & Third-Party Integrations
Shopify API integration, Shopify third-party integrations, Shopify ERP integration, Shopify CRM integration and custom Shopify integrations are the connective tissue of a modern ecommerce tech stack. A Shopify store without these connections is full of manual processes and data errors. Agentix builds clean, reliable Shopify API integration services that connect your store to your full tech stack — eliminating duplicate data entry, reducing errors and giving your operations team the real-time visibility they need. Our Shopify API integration work covers ERP, WMS, CRM, payment gateways and custom platforms across every industry.
A store engineered to convert — not just to look good.
If you're an ambitious ecommerce brand, shopify api & third-party integrations should compound revenue at every visit. Here's what we help you achieve:
- Lift conversion rate across mobile and desktop.
- Cut friction from browse to checkout.
- Build on a fast, scalable foundation that grows with you.
We combine conversion-first design, clean development and performance into stores that are a pleasure to use and built to scale.
Everything you get with Shopify API & Third-Party Integrations.
ERP integration
Bidirectional data sync between Shopify and your ERP — orders, inventory levels, product data, customer records and fulfilment status flowing cleanly in both directions without manual intervention.
CRM integration
Customer data, purchase history and behavioral signals synced to your CRM (Salesforce, HubSpot, Klaviyo or custom) — powering segmentation, automation and sales workflows.
WMS & 3PL integration
Order routing, inventory sync and fulfilment status updates between Shopify and your warehouse management system or 3PL provider — reducing fulfilment errors and eliminating status update lag.
Payment gateway integration
Custom payment method implementation beyond Shopify's standard options — BNPL providers, B2B net terms, regional payment methods and proprietary payment systems.
Middleware & iPaaS development
Custom middleware solutions and iPaaS integrations (Zapier, Make, custom Node.js middleware) for complex multi-system data flows that require transformation logic.
Integration monitoring & maintenance
Ongoing monitoring of integration health, error alerting, API version management and updates as connected platforms evolve their APIs.
A clear path from audit to growth.
Map
Data flow mapping — what data moves, in which direction, at what frequency, and what transformation is needed at each step.
Design
Integration architecture design, API authentication strategy and error handling approach.
Build & test
Development with end-to-end testing across both systems in a staging environment.
Monitor
Production deployment with integration health monitoring and alerting.
Ecommerce builders who obsess over conversion.
We're a partner that lives and breathes ecommerce. Our shopify api & third-party integrations work is grounded in conversion psychology and clean engineering — we design around how your customers actually shop, build on a scalable foundation, and tune relentlessly so the experience never costs you a sale.
Designed around the buyer. Every flow starts from how your customers actually shop and decide — not from a template or a trend.
Engineered to last. Clean, scalable code and performance budgets so the store stays fast and maintainable as you grow.
Measured, then improved. We instrument everything and iterate — conversion is a process, not a one-time launch.
See what your store is leaving on the table.
Run a free instant SEO audit, or book a 30-minute strategy session. Either way you leave with specific, prioritised fixes — no obligation.
What do you need help with?
Pick the closest fit — we'll tailor the call around it.
Good to know.
We've integrated with NetSuite, SAP B1, Sage, Microsoft Dynamics, Brightpearl, Cin7, Linnworks, QuickBooks and custom-built ERPs. If it has an API, we can integrate it.
Native app integrations are faster to implement and maintained by the app vendor. Custom API integrations give you control over the exact data that flows, how it's transformed, and when — necessary when app-based integrations lack the flexibility your operation requires.
Every integration we build includes error logging, retry logic and alerting. If a sync fails, your team is notified with enough context to understand what happened — and the integration attempts recovery automatically before requiring manual intervention.
Related Advanced Development & Automation services.
Your store can do a lot more than it's doing.
Book a free 30-minute strategy session. We'll audit your store live and leave you with three things to fix — whether you work with us or not.