YNAB API Endpoints
Our API uses a REST based design, leverages the JSON data format, and relies upon HTTPS for transport. We respond with meaningful HTTP response codes and if an error occurs, we include error detail...
Last updated Mar 22, 2026
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apiKey
HTTPS
Yes
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## Functionality at a glance The NBG "UK OPB - Account and Transaction v3.1.5" API follows the [UK Open Banking Specification v3.1.5](https://openbankinguk.github.io/read-write-api-site3/v3...
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Account API
This API is used for the classic integration. If you are just starting your implementation, refer to our [new integration guide](https://docs.adyen.com/marketplaces-and-platforms) instead. The Acc...
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