APILayer

Exchangerates API is an APILayer product that provides businesses and developers with foreign exchange rate data through a straightforward REST interface. Its JSON API covers more than 200 currencies and currency pairs, with rates updated from reputable sources as frequently as every 60 seconds on eligible plans. Users can access real-time and historical exchange rates, currency conversion, and, on higher-tier plans, time-series and fluctuation data and bid/ask spreads.

The service offers a free plan with 100 monthly API calls for non-commercial use, alongside paid plans that add higher request limits, commercial usage, historical data, SSL encryption, and different update frequencies. A custom enterprise option is available for organizations needing unlimited requests and dedicated technical support. Exchangerates API emphasizes simple integration and scalable infrastructure, supporting use cases ranging from occasional data lookups to high-volume API traffic. Customers can manage access through an API key and dashboard, and find documentation, FAQs, and support resources online.