Currency Exchange · head-to-head
Currency-api vs Czech National Bank
This free, no-key currency API covers 200+ fiat currencies plus common cryptocurrencies and metals, served off jsDelivr's CDN with a Cloudflare Pages fallback and refreshed daily via GitHub Actions — there's no rate limit because there's no backend server to overload. The original fawazahmed0/currency-api repository has been migrated to fawazahmed0/exchange-api as its new home, though the CDN-hosted JSON endpoints (addressable by date or "latest") work exactly the same way for existing integrators.
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.
| Currency-api | Czech National Bank | |
|---|---|---|
| Authentication | None | None |
| Pricing | free | free |
| Formats | JSON | XML, JSON |
| CORS | yes | unknown |
| HTTPS | Yes | Yes |
Currency-api supports CORS, while Czech National Bank doesn't — pick Currency-api for direct browser calls.