# /checkout/v3/* stops working

Calls to /checkout/v3/* on Klarna API stopped working on September 15, 2026.

On September 15, 2026, Klarna will shut down access to /checkout/v3/* endpoints on api.klarna.com. After that date, calls to these endpoints will fail. Merchants operating through Kustom will no longer have access to Klarna's API.

- API: Klarna API (api.klarna.com)
- Kind: Endpoint removal
- Takes effect: September 15, 2026
- Calls after that day: fail
- Calls it hits: `/checkout/v3/*`
- Source: [Announcement](https://help.kustom.co/en/articles/647216-end-of-access-to-the-klarna-merchant-portal)
- Page: https://www.okapi.bot/providers/klarna-api/breaking-changes/checkout-v3-stops-working/

## What to use instead

Klarna Checkout is now Kustom Checkout. To migrate, direct your requests to api.kustom.co using the same /checkout/v3 paths and parameters.

## Klarna API's words

> Since September 15, 2026, merchants operating through Kustom no longer have access to the Klarna Merchant Portal or Klarna's API