Bank of Russia vs Czech National Bank

This is the Central Bank of the Russian Federation's raw XML data feed, not a modern REST API — it exposes daily and historical official ruble exchange rates alongside adjacent datasets like precious metals prices, interbank rates, deposit rates, and currency swap rates. Requests are parameterized with simple date-range query strings, and the site even ships legacy sample code in Visual Basic and PHP, reflecting its origins as an early-2000s government data service.

The Czech National Bank publishes its official daily fixing of the koruna against roughly 30 foreign currencies, sourced from interbank market quotes and released every working day around 14:30 CET (weekends and holidays carry over the last valid fixing). Beyond the legacy raw XML feed this entry links to, CNB also runs a modern JSON REST API with interactive Swagger documentation and date-parameterized historical queries — and, like the old feed, it requires no key or registration.