Frequently Asked Questions
Exchangerates.host is a REST API that is a service for current and historical foreign exchange rates and crypto exchange rates.
Exchangerates.host is a product built and maintained by APILayer, a technology company that provides a variety of reliable and essential APIs for developers. APILayer’s APIs are affordable for both startups and larger companies. APILayer GmbH is headquartered in Vienna, Austria.
The API's system status is closely monitored around the clock. Every effort is made to ensure the highest possible level of availability and consistency, and we are proud to have an average uptime rate of nearly 100% (99.9%) throughout the last 12 months.
Currency data delivered are sourced from financial data providers and banks, including the European Central Bank.
The API delivers EOD / End of Day historical exchange rates, which become available at 00:05 am GMT for the previous day and are time stamped at one second before midnight.
API requests made by a throttled user or app will fail. All API requests are subject to rate limits. Real time rate limit usage statistics are described in headers that are included with most API responses once enough calls have been made to an endpoint.
API requests are cached by default. You can try to add an additional parameter &v=_actual_date_ in the query, where _actual_date_ enter the day in the format for example Y-m-d (or you can add only hour value).
If your query fails, the API will return false in the success parameter, also HTTP header code 404 Not Found or HTTP 521 Timeout.