Log inSign up
WebSocketStocks & Equities

Tradier Brokerage Market Data WebSocket

Tradier Brokerage Market Data WebSocket is a websocket from Tradier providing stocks & equities data. Tradier's brokerage-grade WebSocket streaming API pushes real-time equity and option trades, quotes, and time-and-sale events for hundreds of symbols at once. A Polymarket bot can use it as a low-latency price anchor for "will TSLA/SPX close above $X" equity and index markets, watching live last-trade and bid/ask to size and time positions.

At a glance

ProviderTradier
TypeWebSocket
CategoryStocks & Equities
Real-timeYes — streaming
AuthAPI key
PricingFree API; real-time data requires a funded Tradier Brokerage account (Pro tier $10/mo for streaming-quality access) — API access & market data: no per-call cost; included with a Tradier Brokerage account, Standard account: $0/order, $500 minimum deposit; sandbox tokens give delayed data only, Tradier Pro: $10/mo (after 2-month promo) for full real-time/streaming access, Pro Plus: $35/mo; first 2 months free for new funded accounts

What data it provides

  • Real-time trade events (last price, size, exchange, session)
  • Live quote events (bid/ask price and size)
  • Timesale (tick-by-tick time-and-sales) events
  • Summary events (open/high/low/prev-close)
  • Tradex (trade-execution) events
  • Equity and equity-option symbols (US listed)

Features

  • Single WebSocket connection streams several hundred symbols simultaneously
  • Symbols can be added/removed without reconnecting (unlike HTTP streaming)
  • Selectable filters: trade, quote, summary, timesale, tradex
  • Requires a short-lived authenticated streaming session created via REST before connecting
  • Official Python and Node.js SDKs; sandbox environment for delayed-data testing
  • Brokerage-grade real-time feed; combine with REST endpoints for history, chains, and quotes

Links

Use it in a bot

Other stocks & equities data sources

Listed, not endorsed. Pricing and capabilities change without notice — check the provider's own documentation before you depend on anything here. Browse the full data resources directory or the strategy database.
Join Discord