Best Free Cryptocurrency APIs (May 2026)
Ranked by uptime + speed + free-tier quality. Updated every hour.
- #1 Coinpaprika — 🟡 Unknown
Free cryptocurrency market data API with prices, volumes, market cap, and historical data for 2,000+ coins.
25,000 calls/month, no key, no credit card
- #2 CoinLore — 🟡 Unknown
Free cryptocurrency data API with no key required, providing prices, market cap, and supply data for 10,000+ coins.
Unlimited (rate-limited), no key, no credit card
- #3 Binance Public API — 🟡 Unknown
Public endpoints of the world's largest crypto exchange providing real-time prices, order books, and trade history.
1,200 requests/min, no key for public data
- #4 Coinbase Advanced Trade API (Public) — 🟡 Unknown
Public endpoints of Coinbase for market data including real-time prices, order books, and candles for all listed assets.
10 calls/sec, no key for public endpoints
- #5 Kraken Public API — 🟡 Unknown
Public REST API for Kraken exchange providing ticker info, OHLC data, order book depth, and recent trades.
Unlimited public data, no key required
- #6 Mempool.space API — 🟡 Unknown
Open-source Bitcoin mempool and blockchain explorer API with fee estimates, block data, and transaction tracking.
Unlimited, no key, no credit card
- #7 BlockCypher — 🟡 Unknown
Blockchain web services API supporting Bitcoin, Ethereum, Litecoin, and Dogecoin with webhooks and transaction broadcasting.
3 calls/sec, 200 calls/hr, no key (key extends limits)
- #8 Blockchain.com Data API — 🟡 Unknown
Free Bitcoin blockchain data API from Blockchain.com providing prices, stats, blocks, and transaction data. No key required.
Unlimited, no key, no credit card
- #9 Blockchair API — 🟡 Unknown
Multi-blockchain explorer API supporting 17+ blockchains including Bitcoin, Ethereum, and Cardano with SQL-like queries.
1,430 calls/day, no key (key extends limits)
- #10 CoinGecko — 🟡 Unknown
Free crypto price data covering 10,000+ coins and 800+ exchanges.
10-30 calls/min, no key (Demo plan)
- #11 CryptoCompare — 🟡 Unknown
Comprehensive crypto data API with prices, historical OHLCV, social stats, mining data, and exchange info.
100,000 calls/month, free key, no credit card
- #12 Etherscan API — 🟡 Unknown
Official Ethereum blockchain explorer API for transactions, balances, contract ABI, gas prices, and token transfers.
5 calls/sec, free key, no credit card
- #13 CoinMarketCap — 🟡 Unknown
Industry-standard crypto market data with prices, rankings, market cap, and on-chain metrics for 30,000+ assets.
10,000 calls/month, free key, no credit card
- #14 CoinAPI — 🟡 Unknown
Unified crypto market data API covering 300+ exchanges with order books, trades, OHLCV, and metadata.
100 calls/day, free key, no credit card