> For the complete documentation index, see [llms.txt](https://apidocs.arionbanki.is/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.arionbanki.is/b2b-2013-schema/b2b-services/b2b-currency-rate-service/functions.md).

# Functions

The service for currency rates allows users to retrieve information about registered exchange rates.

### Retrieve Currency Rates 

The **GetCurrencyRates** operation fetches exchange rate information based on the requested type. The specific exchange rate retrieved depends on the date specified in the request. 

A list is returned containing currencies with registered exchange rates for the selected type. The list displays the buying and selling rates or customs rates for each currency, along with the timestamp of the rate registration. 

* If **customsRate** is requested, only the value in the **CustomsRate** field is populated, while the selling and buying rates are both zero.
* If note or exchange rate is requested, values are populated in the selling and buying rate fields, while the **customsRate** field is zero.