Free Finance & Markets APIs — ranked by value

Market data, stocks, FX, banking, and payments

Scores rate free-tier value on a 1–10 scale. How scores work →

Alpha Vantage Finance & Markets API key Free real-time and historical APIs for stocks, forex, crypto, and technical indicators. 25/day
CoinGecko Finance & Markets API key Comprehensive cryptocurrency price, market cap, and metadata API with a generous free demo tier. 10k req/mo
Polygon.io Finance & Markets API key Real-time and historical market data for stocks, options, forex, and crypto via REST and WebSocket. 5/min
Finnhub Finance & Markets API key Real-time stock, forex, and crypto data plus company fundamentals, news, and alternative data. 60/min
Binance Finance & Markets API key Crypto exchange API for spot and futures market data, account management, and order execution. 1.2k req/min
Coinbase Finance & Markets API key Crypto exchange and developer platform API for trading, wallets, and market data. 10 req/sec
Twelve Data Finance & Markets API key Unified API for real-time and historical stocks, forex, crypto, ETFs, and technical indicators. 800/day
ExchangeRate-API Finance & Markets API key Simple currency conversion and exchange-rate API covering 160+ currencies with a free tier. 1.5k req/mo
Stripe Finance & Markets API key Payments and financial infrastructure API for charges, subscriptions, payouts, and billing. 25/sec
Plaid Finance & Markets API key Bank-account linking API for balances, transactions, identity, and ACH payment initiation. Restricted access
CoinMarketCap Finance & Markets API key Crypto market data API for prices, market caps, rankings, and exchange listings. 10k req/mo
Frankfurter Finance & Markets No auth Free, open-source foreign-exchange rate API sourced from European Central Bank data, no key required. No published cap
Yahoo Finance (yfinance / RapidAPI) Finance & Markets No auth Widely used unofficial source of stock quotes, historical prices, and fundamentals via the yfinance library or RapidAPI. No official free API
Financial Modeling Prep Finance & Markets API key Stock prices, financial statements, ratios, and company fundamentals with a free developer tier. 250 req/day
Marketstack Finance & Markets API key REST API delivering real-time, intraday, and historical worldwide stock market data in JSON. 100/mo
Alpaca Finance & Markets API key Commission-free trading API for stocks, ETFs, options, and crypto plus real-time market data. 200/min
Tiingo Finance & Markets API key End-of-day and intraday stock prices, news, fundamentals, and crypto/forex data with a free tier. 1k req/day
FRED (Federal Reserve Economic Data) Finance & Markets API key Free API from the St. Louis Fed for hundreds of thousands of US and global economic time series. 120 req/min
CoinAPI Finance & Markets API key Unified crypto market data API aggregating real-time and historical data across 350+ exchanges. 100/day
CryptoCompare Finance & Markets API key Crypto price, trading, and historical OHLCV data aggregated across exchanges (now part of CCData). 100k req/mo
CoinPaprika Finance & Markets No auth Free cryptocurrency market data API covering coins, exchanges, markets, and historical tickers. 20k req/mo
Etherscan Finance & Markets API key Ethereum block explorer API for balances, transactions, token data, contracts, and gas prices. 100k req/day
Alchemy Finance & Markets API key Web3 development platform with node RPC plus enhanced APIs for tokens, NFTs, and transfers. 300M/mo
Moralis Finance & Markets API key Cross-chain Web3 data API for wallet balances, token prices, NFTs, and DeFi positions. 40k/day
Kraken Finance & Markets API key Crypto exchange API for spot and futures market data, OHLC, order books, and trading. 1 req/sec
Kucoin Finance & Markets API key Crypto exchange API offering spot, margin, and futures market data plus trading endpoints. Public endpoints free
Gemini Finance & Markets API key Regulated crypto exchange API with public market data and authenticated order/trade endpoints. 120 req/min
Fixer Finance & Markets API key Lightweight foreign-exchange rates API for current and historical forex data with a free tier. 100/mo
Open Exchange Rates Finance & Markets API key Reliable real-time and historical exchange-rate API for 200+ currencies with a free plan. 1k req/mo
Nasdaq Data Link (Quandl) Finance & Markets API key Aggregated financial, economic, and alternative datasets API, formerly known as Quandl. 50 req/day
Messari Finance & Markets API key Crypto asset data and research API with prices, market metrics, on-chain stats, and news. 20 req/min
Blockchair Finance & Markets API key Multi-blockchain explorer API for blocks, transactions, addresses, and stats across many chains. 30 req/min
Public.com Trading API Finance & Markets Token Brokerage API to automate orders for stocks, ETFs, options, bonds, and crypto. Order-execution
Etherscan Multichain / Blockscout Finance & Markets No auth Open-source blockchain explorer API for EVM chains covering blocks, transactions, and tokens. 10 req/sec
CoinDesk (Data API) Finance & Markets API key Crypto price indices and market data API including the long-running Bitcoin Price Index. 100k req/mo