Free and free-tier crypto APIs for builders, traders, portfolio apps, and on-chain tools.
This catalog focuses on APIs that are practical to try for free, whether through public endpoints, generous free tiers, or no-cost developer access.
- API Categories
- Market Data
- Exchange & Trading
- Wallets & Portfolio
- DeFi & NFT
- Payments
- Infrastructure
- News & Analytics
- Methodology
- Contributing
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| Brave New Coin | Institutional-style market and benchmark data | Sandbox or trial access for testing | apiKey |
Docs |
| Chainlink Data Feeds | Oracle price feeds and on-chain market data | Public docs and free developer resources | No | Docs |
| CoinAPI | Unified exchange data, quotes, and OHLCV | Free trial credits with API key | apiKey |
Docs |
| CoinCap | Real-time prices, market caps, and assets | Public no-key endpoints | No | Docs |
| CoinGecko | Prices, markets, exchanges, and historical charts | Free demo/API-key plan for low-volume use | apiKey |
Docs |
| CoinGlass API | Derivatives, liquidations, open interest, and market sentiment | Free developer tier with API key | apiKey |
Docs |
| Coinlayer | Crypto exchange rates and spot prices | Free developer tier with API key | apiKey |
Docs |
| Coinlore | Coins, tickers, markets, and global metrics | Public no-key endpoints | No | Docs |
| CoinMarketCap | Listings, quotes, metadata, and market movers | Free developer tier with API key | apiKey |
Docs |
| Coinpaprika | Tickers, exchanges, events, and asset history | Free quickstart plan on the public API | No | Docs |
| Coinranking | Coins, prices, histories, and rankings | Free developer tier with API key | apiKey |
Docs |
| CoinStats | Coin prices, charts, market caps, and movers | Free API plan with monthly credits and API key | apiKey |
Docs |
| CryptoCompare | Price, volume, and aggregate market feeds | Free developer plan with rate limits | apiKey |
Docs |
| Santiment | Market, social, on-chain, and dev metrics | Free plan exists but access is restricted | apiKey |
Docs |
| Sharpe | Funding, futures, options, arbitrage, narratives, and news data | Public no-key endpoints documented for lightweight use | No | Docs |
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| Binance Spot API | Spot market data, order books, and trading bots | Public market data; trading needs account keys | Mixed |
Docs |
| Binance USD-M Futures API | Perpetual futures data and execution | Public market data; private routes need keys | Mixed |
Docs |
| Bitfinex API | Spot, derivatives, funding, and order books | Public market data; private routes need keys | Mixed |
Docs |
| Bitget API | Spot, futures, copy-trading, and account access | Public market data; private routes need keys | Mixed |
Docs |
| Bitstamp API | Spot market data, balances, and orders | Public market data; private routes need keys | Mixed |
Docs |
| Bybit V5 API | Spot, derivatives, account data, and bots | Public market data; private routes need keys | Mixed |
Docs |
| Coinbase Advanced Trade API | Coinbase market data, orders, and portfolios | Public market streams; trading needs Coinbase auth | Mixed |
Docs |
| CoinEx API | Spot, futures, balances, and order management | Public market data; private routes need keys | Mixed |
Docs |
| Crypto.com Exchange API | Exchange market data, private trading, and WebSockets | Public market data; private routes need keys | Mixed |
Docs |
| Delta Exchange API | Crypto derivatives, orders, and risk data | Public market data; private routes need keys | Mixed |
Docs |
| Deribit API | Options, futures, and low-latency trading | Public market data; private routes need keys | Mixed |
Docs |
| dYdX API | Perpetual trading, market data, and account state | Public market data; trading needs signed requests | Mixed |
Docs |
| Gate.io API v4 | Spot, margin, futures, and account automation | Public market data; private routes need keys | Mixed |
Docs |
| Gemini API | Market data, orders, and account management | Public market data; private routes need keys | Mixed |
Docs |
| Kraken API | Spot market data, OHLC, and orders | Public market data; private routes need account keys | Mixed |
Docs |
| KuCoin API | Spot and futures trading with public feeds | Public market data; private routes need keys | Mixed |
Docs |
| MEXC Spot API | Spot market data and order automation | Public market data; trading needs API keys | Mixed |
Docs |
| OKX API | Spot, futures, funding, and account actions | Public market data; private routes need keys | Mixed |
Docs |
| Poloniex API | Spot market data, lending, and orders | Public market data; private routes need keys | Mixed |
Docs |
| WhiteBIT API | Spot, futures, public books, and trading | Public market data; private routes need keys | Mixed |
Docs |
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| Alchemy Token API | Token balances, metadata, and transfer history | Free tier with monthly compute units | apiKey |
Docs |
| Ankr Advanced API | Token balances, NFTs, and wallet activity across chains | Free developer tier with API key | apiKey |
Docs |
| Blockchair | Address balances, transactions, and multi-chain lookups | Free tier with public endpoints and API key options | Mixed |
Docs |
| BlockCypher | Bitcoin and UTXO wallet data, webhooks, and tx building | Free developer tier with API key | apiKey |
Docs |
| CoinStats | Wallet balances, portfolios, DeFi positions, and NFTs | Free API plan with monthly credits and API key | apiKey |
Docs |
| Covalent API | Multi-chain balances, portfolios, and token holders | Free tier with API key and usage caps | apiKey |
Docs |
| DeBank Open API | Wallet portfolios, protocols, tokens, and NFTs | Free developer access with API key | apiKey |
Docs |
| Ethplorer | ERC-20 balances, holders, and address history | Free freekey for development and personal keys |
apiKey |
Docs |
| Helius DAS API | Digital asset ownership, balances, and metadata | Free developer tier with API key | apiKey |
Docs |
| Mempool | Bitcoin fees, addresses, tx history, and UTXOs | Public no-key API for Bitcoin apps | No | Docs |
| Moralis Wallet API | Wallet balances, token transfers, and history | Free developer plan with API key | apiKey |
Docs |
| OKLink Explorer API | Address balances, transactions, and token holdings | Free plan with API key and daily limits | apiKey |
Docs |
| Solscan Pro API | Solana addresses, tokens, NFT holdings, and tx history | Free developer plan with API key | apiKey |
Docs |
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| 0x API | DEX swaps, prices, and quote routing | Public no-key endpoints for core quotes | No | Docs |
| 1inch API | DEX aggregation, swaps, and token routing | Free developer tier with API key | apiKey |
Docs |
| Alchemy NFT API | NFT metadata, owners, floor prices, and sales | Free tier with monthly compute units | apiKey |
Docs |
| Bitquery | On-chain GraphQL, DEX trades, and NFT activity | Free developer access for testing, then paid scaling | apiKey |
Docs |
| CoinStats | DeFi positions, NFT holdings, collections, and wallet-linked assets | Free API plan with monthly credits and API key | apiKey |
Docs |
| DefiLlama API | Protocols, TVL, yields, stables, and bridges | Public no-key endpoints | No | Docs |
| DEX Screener | DEX pairs, liquidity, token profiles, and price moves | Public API with documented rate limits | No | Docs |
| LI.FI API | Cross-chain swaps, bridges, and route discovery | Public API with documented rate limits | No | Docs |
| Magic Eden API | NFT marketplace data, collections, and orders | Free developer access with API key | apiKey |
Docs |
| Moralis NFT API | NFT metadata, transfers, pricing, and owners | Free developer plan with API key | apiKey |
Docs |
| NFTScan | NFT assets, collections, transactions, and holders | Free developer tier with API key | apiKey |
Docs |
| OpenSea | NFT collections, metadata, events, and marketplace data | Free self-serve API keys for developer access | apiKey |
Docs |
| ParaSwap API | Swap quotes, pricing, and DEX routing | Public no-key endpoints for pricing and swaps | No | Docs |
| Rarible API | NFT items, collections, orders, and activity | Free developer tier with API key | apiKey |
Docs |
| Reservoir | NFT liquidity, tokens, collections, and orders | Free developer tier with API key | apiKey |
Docs |
| SimpleHash | NFT and token metadata across chains and marketplaces | Free developer tier with API key | apiKey |
Docs |
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| BitPay | Invoices, exchange rates, payouts, and refunds | Free to integrate; merchant fees apply in production | apiKey |
Docs |
| BlockBee | Crypto checkout, deposit addresses, and webhooks | Free to integrate; processor and network fees apply | apiKey |
Docs |
| BTCPay Server Greenfield API | Self-hosted Bitcoin checkout, invoices, and stores | Free and open source if you host it yourself | apiKey |
Docs |
| Circle | Stablecoin wallets, payouts, and payment flows | Free sandbox and developer access with API key | apiKey |
Docs |
| Coinbase Payment Acceptance | USDC checkout, payment links, rewards, and webhooks | Developer access with API key and sandbox-style setup | apiKey |
Docs |
| CoinPayments | Merchant checkout, wallets, and payment callbacks | Free to integrate; transaction fees apply | apiKey |
Docs |
| Coinremitter | Merchant wallets, invoices, addresses, and withdrawals | Free plan with limited features and request caps | apiKey |
Docs |
| CryptAPI | Non-custodial crypto checkout and payment callbacks | No monthly fee; processor and network fees apply | No | Docs |
| NOWPayments | Crypto invoices, payouts, subscriptions, and conversions | Free to integrate; processor fees apply | apiKey |
Docs |
| OpenNode | Bitcoin checkout, Lightning invoices, and payouts | Sandbox available for testing | apiKey |
Docs |
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| Alchemy | Managed RPC, webhooks, token, and NFT APIs | Free tier with monthly compute units | apiKey |
Docs |
| Ankr RPC | Multichain RPC, advanced APIs, and archive data | Free developer tier with API key | apiKey |
Docs |
| Arbiscan | Arbitrum explorer data, traces, and contracts | Free tier with API key and call limits | apiKey |
Docs |
| BaseScan | Base explorer data, contracts, and logs | Free tier with API key and call limits | apiKey |
Docs |
| Blockfrost | Cardano chain data, tokens, metadata, and NFTs | Free tier available; paid as request volume grows | apiKey |
Docs |
| BscScan | BNB Chain explorer data, logs, and contracts | Free tier with API key and call limits | apiKey |
Docs |
| Chainbase | Indexed blockchain data, RPC, and webhooks | Free developer tier with API key | apiKey |
Docs |
| Etherscan | Explorer, balances, logs, contracts, and gas data | Free tier with rate and daily call limits | apiKey |
Docs |
| GetBlock | Multi-chain RPC nodes and Web3 infrastructure | Free daily requests with API key | apiKey |
Docs |
| Helius | Solana RPC, webhooks, indexing, and enhanced txs | Free developer tier with API key | apiKey |
Docs |
| Infura | Ethereum and multichain RPC, IPFS, and add-ons | Free tier with daily credits | apiKey |
Docs |
| PolygonScan | Polygon explorer data, tokens, and tx history | Free tier with API key and call limits | apiKey |
Docs |
| QuickNode | Managed RPC, Streams, and chain add-ons | Free developer tier with API key | apiKey |
Docs |
| Solana JSON-RPC | Solana RPC methods, blocks, and transactions | Public endpoints exist; dedicated providers scale better | No | Docs |
| Tatum | Blockchain RPC, wallet ops, and notifications | Free developer tier with API key | apiKey |
Docs |
| Tenderly | Node RPC, simulation, tracing, and alerting | Free developer tier with API key | apiKey |
Docs |
| The Graph | GraphQL indexing for on-chain data and subgraphs | Free developer tier with API key | apiKey |
Docs |
| TronGrid | Tron full-node access, accounts, and events | Free developer tier with API key | apiKey |
Docs |
| API | What It Is Good For | Free Plan | Auth | Docs |
|---|---|---|---|---|
| Alternative.me | Crypto fear and greed sentiment index | Public no-key endpoint for sentiment snapshots | No | Docs |
| Coin Metrics Community API | Network analytics, reference data, and metrics | Community API is free with light limits | No | Docs |
| Coindar | Project events, listings, and timeline data | Free developer plan with API key | apiKey |
Docs |
| CoinMarketCal | Crypto events, launches, and calendar data | Free developer tier with API key | apiKey |
Docs |
| CryptoCompare News API | News feeds, sources, and market commentary | Free developer plan with rate limits | apiKey |
Docs |
| CryptoPanic | Aggregated crypto news, filters, and sentiment tags | Free developer tier with API key | apiKey |
Docs |
| Dune API | Query results, dashboards, and decoded on-chain analytics | Free developer access with API key | apiKey |
Docs |
| Flipside API | SQL-based blockchain analytics and query results | Free developer access with API key | apiKey |
Docs |
| Glassnode | On-chain charts, indicators, and market metrics | Free plan exists for selected metrics | apiKey |
Docs |
| LunarCrush | Social, influencer, and community metrics | Free developer tier with API key | apiKey |
Docs |
| Messari | Research, asset intel, and market dashboards | Free access exists for a limited subset of endpoints | apiKey |
Docs |
This repo focuses on APIs whose official docs clearly describe a usable free tier, free trial, free sandbox, public endpoint set, or self-hosted open-source path.
See CONTRIBUTING.md for submission rules and validation expectations.