The Klarna Ecom API is shopping intelligence infrastructure - not Klarna’s payment product. It provides cross-retailer product search, price history, and deal data across 13 regions. If you are building a price comparison product, a deal discovery app, or a consumer shopping tool that needs to surface pricing from multiple retailers simultaneously, this is the data layer.
What the Klarna Ecom API covers
Multi-store search - search for a product and get results from multiple retailers simultaneously in the queried region. Returns product name, retailer, current price, and product URL.
Price history - historical price data per product showing price changes over time. Useful for displaying “this is the lowest price in X days” indicators or for alerting users when a product hits a target price.
Product reviews - review data from Klarna’s integrated review network.
Deals - products currently flagged with significant price reductions.
Category intelligence - browse products by category with multi-store results.
Store data - retailer information and store-level data for covered merchants.
13 regions - coverage across Europe and North America.
Use cases
Price comparison - the core use case. Users search for a product; your app shows them where it is cheapest across all covered retailers in their region.
Price drop alerts - combine the price history data with a polling loop to notify users when a product they are watching drops to their target price.
Deal discovery - surface the current best deals across multiple retailers in a single feed. The deals endpoint makes this straightforward to implement.
Purchase timing advice - use price history to show users whether now is a good time to buy relative to historical pricing. “This product is 15% below its 90-day average” is a clear signal.
Affiliate monetisation - price comparison surfaces from which users click through to retailers are a common affiliate model. The multi-store data gives you the comparison layer; affiliate links handle the monetisation.