Overview
Opinion Websocket
Welcome to the official documentation for the Opinion WebSocket API — a real-time, event-driven interface for accessing live market data in OPINION Prediction Markets.
📊 Public Websocket Data API: This Websocket API provides live, streaming read-only access to market data, orderbooks, and price information. For trading operations (placing orders, managing positions), please use the Opinion CLOB SDK.
To request API access, Please kindly fill out this short application form .
API Key can be used for Opinion OpenAPI, Opinion Websocket, and Opinion CLOB SDK
What is Opinion Websocket?
The Opinion WebSocket API provides a persistent connection that pushes updates in real time from Opinion prediction market. Unlike RESTful polling, WebSockets ensure developers receive data instantly when changes occur, reducing latency and network overhead - ideal for live dashboards, trading engines, and analytics:
Subscribe to market price streams — Receive ticks and trade updates as they happen
Monitor orderbook changes — Get bid/ask book deltas in near real-time
Receive market events — Market activation, resolution, or status transitions
Track aggregated metrics — Volume or event summaries streamed live
Key Features
Real-Time Streaming
Persistent WebSocket connection for low-latency updates
Event-driven feeds eliminate the need for repeated polling
Efficient delivery of high-frequency data
Subscription Model
Subscribe to specific markets, tokens, or event types
Receive targeted updates to minimize noise and bandwidth
Secure & Compatible
API Key authentication on initial handshake
TLS/SSL encrypted transport
Works across languages and platforms with standard WebSocket clients
Use Cases
Live Market Dashboards
Build interactive UIs that update instantly with trades, prices, and orderbook moves.
Automated Trading Clients
Feed real-time market data into trading algorithms, bots, or signal engines.
Analytics & Alerting
Trigger custom alerts when price thresholds, spread changes, or market events occur.
How It Works
Connect to the WebSocket endpoint with your API Key.
Authenticate and subscribe to one or more topics (markets, tokens, events).
Receive streaming messages as soon as updates occur.
Parse and act on events in your application.
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