How to

How to guides for developers to get started with Geins.

Activate promo code on cart

Learn how to activate promo codes on carts using Geins Merchant API

Add custom data to cart

Learn how to add custom data to carts using Geins Merchant API

Add product to cart

Add products to an existing cart using Geins Merchant API

Build product listing

Build a product listing page (PLP) with facets and pagination using Geins Merchant API

Bulk update sale prices

Reset sale prices from a previous promotion and apply new sale prices across markets using the bulk update prices API

Change user password

Change user passwords securely using Geins Auth Service's signature-based flow