Sacks.ie: Eircode Checkout Autofill

Sacks.ie’s WooCommerce checkout asked customers to type a full Irish address by hand, a process prone to typos and inconsistent formatting that led to failed and misrouted deliveries. We built a custom plugin that adds a dedicated Eircode field to checkout, wired to the Woosmap Localities API. As a customer types their Eircode, the plugin looks up matching addresses and auto-fills the street, town and county in one step.

The integration was built cost-aware, querying the API only from the Eircode field rather than on every keystroke across the form, so usage (and cost) stays proportional to actual checkout volume.