Best Crypto APIs for Developers in 2026

# CoinGecko: Get Bitcoin price in USD
import requests

url = "https://api.coingecko.com/api/v3/simple/price"
params = {
    "ids": "bitcoin",
    "vs_currencies": "usd",
    "include_24hr_change": "true",
    "include_market_cap": "true"
}

response = requests.get(url, params=params)
data = response.json()

btc = data["bitcoin"]
print(f"BTC: ${btc['usd']:,.2f}")
print(f"24h Change: {btc['usd_24h_change']:.2f}%")
print(f"Market Cap: ${btc['usd_market_cap']:,.0f}")

# CoinMarketCap: Get latest crypto listings
import requests

url = "https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest"
headers = {"X-CMC_PRO_API_KEY": "your_api_key"}
params = {"limit": 5, "convert": "USD"}

response = requests.get(url, headers=headers, params=params)
data = response.json()

for coin in data["data"]:
    quote = coin["quote"]["USD"]
    print(f"{coin['symbol']}: ${quote['price']:,.2f} "
          f"({quote['percent_change_24h']:+.2f}%)")

# Binance: Get BTC/USDT ticker price and 24h stats
import requests

# No API key needed for market data
url = "https://api.binance.com/api/v3/ticker/24hr"
params = {"symbol": "BTCUSDT"}

response = requests.get(url, params=params)
ticker = response.json()

print(f"BTC/USDT: ${float(ticker['lastPrice']):,.2f}")
print(f"24h High:  ${float(ticker['highPrice']):,.2f}")
print(f"24h Low:   ${float(ticker['lowPrice']):,.2f}")
print(f"Volume:    {float(ticker['volume']):,.2f} BTC")

# Messari: Get asset profile and market metrics
import requests

url = "https://data.messari.io/api/v1/assets/bitcoin/metrics"
headers = {"x-messari-api-key": "your_api_key"}

response = requests.get(url, headers=headers)
data = response.json()["data"]

market = data["market_data"]
print(f"BTC Price: ${market['price_usd']:,.2f}")
print(f"Market Cap: ${market['marketcap']['current_marketcap_usd']:,.0f}")

# Access on-chain data
onchain = data["on_chain_data"]
print(f"Active Addresses: {onchain['active_addresses']:,}")
print(f"Hash Rate: {onchain['hash_rate']:.2f} EH/s")

# CryptoCompare: Get social stats and price for Ethereum
import requests

api_key = "your_api_key"

# Price data
price_url = "https://min-api.cryptocompare.com/data/price"
price_resp = requests.get(price_url, params={
    "fsym": "ETH",
    "tsyms": "USD,BTC",
    "api_key": api_key
}).json()

# Social stats
social_url = "https://min-api.cryptocompare.com/data/social/coin/latest"
social_resp = requests.get(social_url, params={
    "coinId": 7605,  # Ethereum
    "api_key": api_key
}).json()

print(f"ETH: ${price_resp['USD']:,.2f} | {price_resp['BTC']:.6f} BTC")
reddit = social_resp["Data"]["Reddit"]
print(f"Reddit Subscribers: {reddit['subscribers']:,}")

# Twelve Data: Get BTC/USD with RSI indicator
import requests

api_key = "your_api_key"

# BTC price with RSI
url = "https://api.twelvedata.com/time_series"
params = {
    "symbol": "BTC/USD",
    "interval": "1h",
    "outputsize": 5,
    "apikey": api_key
}

response = requests.get(url, params=params)
data = response.json()

for point in data["values"][:3]:
    print(f"{point['datetime']} | "
          f"Open: ${float(point['open']):,.2f} | "
          f"Close: ${float(point['close']):,.2f}")