CoinMarketCap API - Complete Developer Guide

Overview

CoinMarketCap (CMC) is one of the most recognized cryptocurrency data aggregators, providing comprehensive market data, pricing, and metadata for thousands of cryptocurrencies. Their API is widely used by exchanges, portfolio trackers, and financial applications.

Pricing Plans

Key Features

• Cryptocurrency Listings: Access data for 10,000+ cryptocurrencies
• Market Data: Real-time and historical price data
• Exchange Data: Trading volume, liquidity metrics
• Global Market Metrics: Market cap, 24h volume, dominance
• Historical Data: OHLCV historical data
• Cryptocurrency Metadata: Logos, descriptions, URLs

API Endpoints

GET https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest
GET https://pro-api.coinmarketcap.com/v1/cryptocurrency/quotes/latest
GET https://pro-api.coinmarketcap.com/v1/cryptocurrency/info
GET https://pro-api.coinmarketcap.com/v1/global-metrics/quotes/latest

Authentication

API Key in header:

curl -H "X-CMC_PRO_API_KEY: YOUR_API_KEY" \
  https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest

Response Example

{
  "status": {
    "timestamp": "2026-02-25T12:00:00.000Z",
    "error_code": 0,
    "error_message": null
  },
  "data": [
    {
      "id": 1,
      "name": "Bitcoin",
      "symbol": "BTC",
      "slug": "bitcoin",
      "quote": {
        "USD": {
          "price": 97500.00,
          "volume_24h": 35000000000,
          "market_cap": 1920000000000,
          "percent_change_24h": 2.5
        }
      }
    }
  ]
}

Pros & Cons

Best Use Cases

• Cryptocurrency portfolio trackers
• Price alert applications
• Exchange rate calculators
• Cryptocurrency news platforms
• Market analysis tools