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.
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<a href="https://greatapis.com/api/coinmarketcap/"><img src="https://greatapis.com/badge/coinmarketcap.svg" alt="Scored 75 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
Basic 50 req/min (15,000 credits/mo); Builder 300 req/min (150K credits/mo); Startup 600 req/min (450K credits/mo); Growth 750 req/min (2M credits/mo); Professional 1200 req/min (5M credits/mo); Enterprise 1600+ req/min (30M+ credits/mo)