PromoKIT

PromoKIT lets merchants create and manage discounts and loyalty from the Shopify admin. You can set up code-based or automatic discounts, as a percentage or fixed amount, on the whole order, products, or collections, and one code can apply different discounts per product or collection. Loyalty cards give automatic discounts to customers who meet criteria such as tags, total spent, or number of orders. For headless stores, a public API exposes active promotions and validates discount codes.