Live Cryptocurrency data.
CoinRanking API is a free Cryptocurrency API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Best API documentation to integrate real-time crypto prices of today. Get live rates of coins, crypto markets, and exchanges.
Details from developers.coinranking.com.

Unified API suite · now live
Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
Cryptocurrencies Payment & Prices
The CoinRanking API is provided by Coinranking API Documentation (developers.coinranking.com). Best API documentation to integrate real-time crypto prices of today. Get live rates of coins, crypto markets, and exchanges.
Yes. The CoinRanking API is listed in the Cryptocurrency category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The CoinRanking API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the CoinRanking API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The CoinRanking API is served over HTTPS, so it's safe to use in production.