Best Free Crypto APIs for Developers
Real-time coin prices, volume charts, DEX liquidity, and blockchain explorer endpoints for Web3 developers.
Overview & Comparison Matrix
36 Endpoints| API Name | Category | Auth Status | Rate Limit | Action |
|---|---|---|---|---|
| CoinGecko | crypto | No Key | 10-50 req/min | View API |
| CoinCap | crypto | No Key | 200 req/min | View API |
| CoinMarketCap | crypto | Free Key | 10,000 req/month | View API |
| CoinPaprika | crypto | No Key | Unlimited | View API |
| CoinLore | crypto | No Key | Unlimited | View API |
| CryptoCompare | crypto | Free Key | 100,000 req/month | View API |
| Binance API | crypto | No Key | 1200 req/min | View API |
| Coinbase API | crypto | Free Key | 10,000 req/hour | View API |
| Etherscan | crypto | Free Key | 5 req/sec | View API |
| Alchemy | crypto | Free Key | 300M units/month | View API |
All Verified Endpoints(24 / 36)
CoinGecko
Zero authentication required, comprehensive crypto market datasets
CoinCap
Real-time crypto market cap, exchange volume, and live pricing feeds
CoinMarketCap
Industry-leading cryptocurrency index and market valuations
CoinPaprika
100% free crypto price ticker and decentralized token analytics
CoinLore
Free cryptocurrency market data, coin list and global trading volume
CryptoCompare
Comprehensive crypto market streaming and historical pricing analytics
Binance API
Official Binance spot, futures, and real-time market depth endpoints
Coinbase API
US largest regulated crypto exchange developer API endpoints
Etherscan
Ethereum blockchain explorer API for transactions, smart contract ABIs, gas trackers, and token balances.
Alchemy
Complete Web3 development suite and high-throughput RPC node infrastructure
Moralis
Enterprise Web3 data APIs for multichain wallet balances, NFT indexing, and DeFi token prices.
DeFi Llama
Open DeFi TVL protocol data and yield analytics, 100% free
OpenSea
NFT marketplace listings, bids, collection stats, and sales events
The Graph
Decentralized indexing protocol for querying blockchain networks via GraphQL
Infura
High-performance Web3 infrastructure and JSON-RPC API for Ethereum, Polygon, Optimism, and IPFS.
QuickNode
Multi-chain node infrastructure and real-time Web3 RPC streaming
Blockfrost
Cardano blockchain developer API and token telemetry
CoinRanking
Live coin rankings, interactive price charts, and exchange metrics
CoinDesk
Bitcoin price index (BPI) and crypto financial news ticker
KuCoin
Spot and margin cryptocurrency trading market endpoints
AutoPay24hr API
A public, keyless REST API for live crypto swaps: list supported coins, get quotes, create swap orders and check order status. It returns JSON and can be called directly from browsers or servers.
Bitcoin Barometer
Provides Nakamoto Notes' Bitcoin Barometer — a composite heat score (0–100) and zone that describes Bitcoin's market-cycle position. Offers a current JSON endpoint and a daily-history CSV, plus an embeddable widget and several indicator fields.
BitcoinYield API
BitcoinYield provides a normalized, live feed of crypto yields across DeFi and CeFi, ranked by rate and risk. It offers public endpoints for summary data and a bearer-authenticated feed for the full, filterable offers list.
CryptoLabel API
The CryptoLabel API allows users to resolve blockchain addresses, identify their types, and retrieve associated labels and metadata. It supports several blockchains including Ethereum, Bitcoin, and Tron, providing detailed information on entities and labels related to the queried address.
Frequently Asked Questions & Developer Guide
Which free crypto API does not require an API key?
CoinPaprika, CoinCap, and DeFi Llama offer robust endpoints with zero registration or credentials required.
Which provider has the broadest coin coverage?
CoinGecko covers 10,000+ coins, token contracts, and decentralized exchange liquidity pools on its free tier.
Can I use these for trading bot algorithms?
Yes, for price feeds, ticker caching, and market sentiment. Execution of buy/sell orders requires exchange-specific authenticated keys.