Access comprehensive market data from US, Korean, Japanese, and European markets. Stream real-time prices for stocks, ETFs, currencies, and commodities with enterprise-grade reliability.
Everything you need to build financial applications at scale
Access real-time and historical data from major exchanges worldwide, including NYSE, NASDAQ, KOSPI, TSE, and European markets.
Ultra-low latency streaming for real-time price updates, order book changes, and market events across all supported markets.
Comprehensive ETF data including holdings, NAV, performance metrics, and constituent analysis for global ETFs.
Real-time FX rates for 150+ currency pairs and comprehensive commodity prices including precious metals, energy, and agriculture.
Export large datasets in Apache Parquet format for efficient big data processing and analysis in your preferred tools.
RESTful APIs with comprehensive documentation, SDKs for major languages, and sandbox environment for testing.
RESTful endpoints and WebSocket connections for all your data needs
Get real-time quote data for any stock symbol across supported exchanges
Retrieve historical OHLCV data with customizable time ranges and intervals
WebSocket connection for real-time market data streaming
Get current ETF holdings, weights, and constituent details
Real-time foreign exchange rates for currency pairs
Export bulk data in Parquet format for big data processing
// Example: Connect to WebSocket stream
const ws = new WebSocket('wss://stream.caster.link/v1');
ws.on('open', () => {
ws.send(JSON.stringify({
action: 'subscribe',
symbols: ['AAPL', '005930.KS', '7203.T'],
channels: ['trades', 'quotes']
}));
});
ws.on('message', (data) => {
const tick = JSON.parse(data);
console.log(`${tick.symbol}: $${tick.price}`);
});
Choose the plan that fits your needs