Cryptocurrencies Comparison.
CryptoCompare API is a free Cryptocurrency API that requires no API key, is served over HTTPS and has unconfirmed CORS support.

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 Trading platform
Cryptocurrencies Exchange Rates
Real-time Ethereum whale wallet tracking, DEX trades, net flow, and conviction scoring
Yes. The CryptoCompare 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.
No. The CryptoCompare API requires no authentication, so you can start making requests without signing up.
CORS support for the CryptoCompare API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The CryptoCompare API is served over HTTPS, so it's safe to use in production.