Bring border-cost estimates into checkout.

The running calculation service powers an embeddable checkout widget. Change the synthetic basket and request a new estimate. The widget displays the backend response; it does not invent rates or carrier prices. A website integration supplies the trusted basket and selected delivery charge.

The portal, calculation API, source collection and reusable widget are implemented. Going live requires reviewed data, merchant configuration and checkout integration. The recording keeps the software boundaries visible.

API, source pipeline and reusable widget, built to connect with existing commerce systems.