Poloniex
LiveLast verified 24 Sept 2026
Real-time crypto exchange market data (prices, order books, trades) and account trading.
Example request
curl -s 'https://api.poloniex.com/markets/BTC_USDT/price'
Free tier, in plain English
Public market data endpoints are free and keyless; trading endpoints need an HMAC-signed API key, but the docs don't publish a request-rate cap.
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