Planning a Shopify and NoPOS Integration
How to scope catalog, inventory, orders, and webhook synchronization before writing connector code.
The NoPOS developer relations team writes practical guides for building on the NoPOS REST API — from first smoke test to production POS.
Shopify integrations are easiest when you treat NoPOS as the operational backend and Shopify as a sales channel. Before writing connector code, decide which system owns catalog edits, inventory authority, order fulfillment, and customer identity.
Scope the sync direction
- Catalog: one-way from NoPOS, one-way from Shopify, or carefully merged.
- Inventory: pick one source of truth for available quantity.
- Orders: decide whether Shopify orders create NoPOS orders automatically or enter a review queue.
- Customers: match by email, phone, or an explicit external ID.
Use the real references
Start with the NoPOS OpenAPI document and Swagger UI. If the connector needs a route that is not present in the catalog, file a feature request through the developer portal instead of hard-coding an invented endpoint.
Recommended rollout
- Verify the API key.
- Read products and inventory from NoPOS.
- Run a dry sync into a staging Shopify store.
- Create orders in NoPOS from a small subset of Shopify orders.
- Add webhook retry, idempotency, and reconciliation reporting.
Build from the current contract
Open the gateway for OpenAPI, Swagger, AGENTS.md, llms.txt, and the first X-API-Key smoke test.