At a glance
ProviderFinnhub
TypeWebSocket
CategoryStocks & Equities
Real-timeYes — streaming
AuthAPI key
PricingFree tier (60 calls/min, 50 WS symbols); paid plans from ~$50/mo — Free: $0, 60 API calls/min, WebSocket limited to 50 symbols, real-time US stocks + forex + crypto, basic fundamentals/earnings, Paid plans: from ~$49-50/mo per data bundle/market, unlimited WebSocket symbols, higher rate limits, Premium/enterprise: hundreds/mo for international real-time data, full fundamentals and alternative data with fewer limits
What data it provides
- Real-time tick-by-tick trades: symbol (s), price (p), volume (v), millisecond timestamp (t), trade conditions (c)
- US stock trade stream (plus forex and crypto symbols on the same socket)
- Subscribe/unsubscribe per symbol via JSON messages over one connection
- Companion REST: company fundamentals, earnings calendar, EPS estimates
- Index/ETF coverage for close-above-strike style monitoring
- Type-tagged JSON frames ({"type":"trade","data":[...]})
Features
- Free real-time WebSocket streaming (rare among stock data APIs)
- Free tier: 60 REST calls/min and up to 50 subscribed symbols per socket
- Paid plans unlock unlimited WebSocket symbols and higher REST limits
- Single persistent connection multiplexes stocks, forex, and crypto
- Official SDKs/libraries (Python, JS, Go, and community Rust crate)
- Token-authenticated; no credit card required to start
Links
Use it in a bot
Other stocks & equities data sources
