Currency Exchange — entry 008 of 18
CurrencyFreaks
CurrencyFreaks delivers minute-level exchange rates for a notably broad basket — 166 fiat currencies plus metals and roughly 850+ cryptocurrencies, over 1,000 instruments in total — with both JSON and XML output and historical data reaching back to 1984. Its paid tiers unlock faster refresh intervals, a time-series endpoint, a fluctuation endpoint, and even an IP-to-currency lookup, positioning it as a more data-dense alternative to typical fiat-only rate APIs.
GreatAPIs Score
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<a href="https://greatapis.com/api/currencyfreaks/"><img src="https://greatapis.com/badge/currencyfreaks.svg" alt="Scored 81 on greatapis.com"></a>Auth quickstart
- Get a key at the provider
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
1,000 API calls/month on the free Developer plan, rising to 15,000/mo, 150,000/mo, and 550,000/mo on paid tiers -- per the live plan cards and schema.org data on currencyfreaks.com/pricing.