What you get#
Onekey exposes Klarna as 18 endpoints behind one API key: 3 endpoints return one record (data is an object) and 15 endpoints return a list (data is an array). Every answer uses the same envelope (success, data, metadata, error), the cost is reported in metadata.credits_charged, and fields are mapped onto the unified schema so the code you write for Klarna also works for the rest of the e-commerce & marketplaces category.
Endpoints#
| Endpoint | What it does | Parameters | Credits | Status |
|---|---|---|---|---|
categories | List root shopping categories on Klarna. | - | 2 | beta needs a pack |
categories_children | List sub-categories of a Klarna category. | category_id* | 2 | beta needs a pack |
category | Browse products in a Klarna category. | category_id*, cursor | 2 | beta needs a pack |
category_filters | Filters available for a Klarna category. | category_id* | 2 | beta needs a pack |
category_guide | Buying-guide content for a Klarna category. | category_id* | 2 | beta needs a pack |
category_keywords | Popular search keywords for a Klarna category. | category_id* | 2 | beta needs a pack |
product | A Klarna product by id. | product_id, url | 2 | beta needs a pack |
product_compare | Compare two Klarna products side by side. | product_id*, product_id_2* | 2 | beta needs a pack |
product_offers | Merchant offers for a Klarna product. | product_id, url | 2 | beta needs a pack |
product_price_history | Price history of a Klarna product. | product_id, url | 2 | beta needs a pack |
reviews | User reviews for a Klarna product. | product_id, url, cursor | 2 | beta needs a pack |
reviews_overview | Review totals and score distribution of a Klarna product. | product_id, url | 2 | beta needs a pack |
reviews_pro | Professional reviews of a Klarna product. | product_id, url, cursor | 2 | beta needs a pack |
search | Search Klarna products by keyword. | query* | 2 | beta needs a pack |
search_suggestions | Search suggestions for Klarna. | query* | 2 | beta needs a pack |
store_filters | Filters available on a Klarna store page. | id* | 2 | beta needs a pack |
store_products | Products listed by a Klarna store. | id*, cursor | 2 | beta needs a pack |
stores | List shopping stores on Klarna. | cursor | 2 | beta needs a pack |
A * marks a required parameter. Each endpoint name links to its reference page with the full parameter table, caching window and a recorded response.
Make a request#
This calls klarna.category_guide (2 credits, beta). Replace YOUR_API_KEY with your key; sign up, no card. 1,000 free credits cover the open-platform endpoints. Hard-to-reach platforms (X, TikTok, Instagram, Reddit, and others marked on their page) need a verified email and a purchased pack.
curl "https://api.onekey.dev/v1/klarna/category_guide?category_id=cl94" \
-H "x-api-key: YOUR_API_KEY"Fields you get back#
These unified fields come back from Klarna, with the same names as on every other platform. The count is how many of its 18 mapped endpoints return the field; a field the source lacks is null, never missing. 6 platform-specific fields (ext.<name>) come on top, documented on each endpoint page.
| Field | Type | Endpoints |
|---|---|---|
entity.name | string | 12 |
entity.id | string | 11 |
entity.url | URL | 9 |
entity.stats.rating | number | 7 |
listing.currency | string | 7 |
listing.price | number | 7 |
entity.description | string | 6 |
entity.stats.ratingCount | integer | 6 |
media.thumbnailUrl | URL | 6 |
listing.brand | string | 5 |
content.createdAt | ISO 8601 date | 3 |
content.text | string | 3 |
content.title | string | 3 |
entity.type | string | 3 |
author.displayName | string | 2 |
content.id | string | 2 |
engagement.votes | integer | 2 |
entity.slug | string | 2 |
content.url | URL | 1 |
listing.available | boolean | 1 |
listing.condition | string | 1 |
listing.seller | string | 1 |
The full schema is in Unified schema.
Pricing#
Every Klarna endpoint costs 2 credits per call. Free when served from cache (0.2 credit for a cached response over 100 KB). Invalid, failed or not-found calls are not charged. See pricing for credit packs.