Messages
{
"type": "join",
"room": "pm:type:trade"
}{
"type": "leave",
"room": "pm:type:trade"
}{
"type": "message",
"room": "pm:type:trade",
"data": {
"type": "trade",
"channel": "trades",
"exchange": "polymarket",
"marketId": "1234567890",
"timestamp": 1785347120123
}
}Prediction Markets — Feeds
Stream prediction market events by type
Stream one event type across Kalshi and Polymarket, such as trade, crypto_price, market_opened, or resolved, over Datastream WebSocket.
WSS
/
Events of one type across exchanges (trade, crypto_price, market_opened, resolved, …). Does not receive market-state prices/quotes/orderbook/volume.
SDK Example
import { Datastream } from '@solana-tracker/data-api';
const dataStream = new Datastream({
wsUrl: 'wss://datastream.solanatracker.io/YOUR_API_KEY',
});
dataStream.on('error', console.error);
await dataStream.connect();
const sub = dataStream.subscribe.pm.type('trade').on((data) => {
console.log(data);
});
// sub.unsubscribe();
Messages
{
"type": "join",
"room": "pm:type:trade"
}{
"type": "leave",
"room": "pm:type:trade"
}{
"type": "message",
"room": "pm:type:trade",
"data": {
"type": "trade",
"channel": "trades",
"exchange": "polymarket",
"marketId": "1234567890",
"timestamp": 1785347120123
}
}apiKey
type:httpApiKey
API key for authentication. Include your Datastream key in the connection URL: wss://datastream.solanatracker.io/{DATASTREAM_KEY}
joinEventTypeFeed
type:object
Subscribe by payload event type
leaveEventTypeFeed
type:object
Unsubscribe from By Event Type
eventTypeFeedMessage
type:object
By Event Type update
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