Czech National Bank vs Economia.Awesome

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.

AwesomeAPI's currency service is a Brazil-centric quote engine spanning 150+ pairs, from majors to BRL tourism rates, PTAX central-bank fixings, and a handful of crypto pairs, with distinct endpoints for the latest quote, minute-by-minute intraday sequences, and up to 360 days of historical closes filterable by exact date range. No credentials are required for basic use, and registering for a free API key raises the request ceiling and removes a short response-caching delay. Documentation is Portuguese-only.