Connection
Endpointwss://api.pumpevm.fun/ws/v1/prediction/orderbook
Authorization: Bearer <api_key>
Channels
| Channel | Description | Payload |
|---|---|---|
orderbook | Real-time order book updates | Bids, asks |
trades | Live trade executions | Trade details |
positions | User position updates | Position info |
account | Account balance updates | Balance, P&L |
Subscribe
{
"type": "subscribe",
"channel": "orderbook",
"marketId": "0x...",
"outcome": "YES"
}
Unsubscribe
{
"type": "unsubscribe",
"channel": "orderbook",
"marketId": "0x..."
}
Response messages
Order book update
{
"type": "orderbook",
"data": {
"marketId": "0x...",
"outcome": "YES",
"bids": [["0.65", "1000"], ["0.64", "2000"], ["0.63", "1500"]],
"asks": [["0.67", "500"], ["0.68", "1500"], ["0.69", "2000"]],
"lastPrice": "0.66",
"timestamp": "2025-06-20T12:00:00Z"
}
}
Trade
{
"type": "trade",
"data": {
"marketId": "0x...",
"outcome": "YES",
"price": "0.66",
"size": "500",
"side": "buy",
"makerFee": "0.02",
"takerFee": "0.05",
"timestamp": "2025-06-20T12:00:00Z",
"txHash": "0x..."
}
}
Position update
{
"type": "position",
"data": {
"marketId": "0x...",
"outcome": "YES",
"size": "1500",
"entryPrice": "0.60",
"currentPrice": "0.66",
"unrealizedPnl": "+90.00",
"realizedPnl": "+45.00",
"timestamp": "2025-06-20T12:00:00Z"
}
}
Account update
{
"type": "account",
"data": {
"balance": "10000.00",
"available": "8500.00",
"locked": "1500.00",
"totalPnl": "+250.00",
"totalTrades": "127",
"timestamp": "2025-06-20T12:00:00Z"
}
}