WebSocket reference

Public integrations use one Public API WebSocket (no auth) for market data. The Trader API and Partner API do not use that socket for private or trading workflows: traders use subscription and streaming on low-latency REST (trade.figuremarkets.*); partners use FIX for live market and order flow. Which feed applies depends on whether you are public-only, a Trader API customer, or a Partner on FIX—not a list of WebSocket URLs on this page.

Where to look

Use case	Docs	Auth
Public market data (order book, candles, trades)	Public API — WebSocket	None. Connect and subscribe to public channels.

URLs, subscription flow, channel reference (MARKET, ORDER_BOOK, CANDLES, TRADES), and message formats are only in Public API — WebSocket; they are not duplicated here.

Trader API: order and account streaming — Trader API spec (low-latency). Prefer that over polling REST when you need low latency.

Partner API: real-time market data and orders go through FIX; see Trading (FIX). That is the primary channel for market makers.