Services that provide price quotes and historical data through an API. Forex robots may use market data APIs to get currency pair prices, tick data, or news. Examples include financial data services (like Alpha Vantage, Polygon) offering REST or WebSocket feeds of Forex prices. A trading bot might call a market data API to retrieve the latest EUR/USD rate or download historical bars for backtesting. This integration is used by developers to feed algorithms with data; traders benefit from having reliable, up-to-date market information in their strategies.

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