Cryptocurrency — entry 024 of 53
CoinMarketCap
CoinMarketCap's Professional API is the reference price and market-cap feed most other crypto tools cross-check against, covering listings, historical OHLCV, exchange data, and a global market-cap index across tens of thousands of assets. It's server-side only — requests return no CORS headers — with a free Basic plan capped at a low monthly call volume and paid tiers scaling up limits and endpoint access.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score75
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
Embed this badge
<a href="https://greatapis.com/api/coinmarketcap/"><img src="https://greatapis.com/badge/coinmarketcap.svg" alt="Scored 75 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- 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.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.