Room ID: polymarket_event_metrics
Endpoint: wss://api.struct.to/ws
Rate: 0.025 credits per message
Stream aggregated metric updates at the event level. This room provides volume, fee, and activity data rolled up across all markets within an event.
Subscribe
The event_slugs filter is required. You may optionally specify timeframes to limit which windows you receive.
Filters
| Filter | Type | Required | Description |
|---|
event_slugs | string[] | Yes | Events to track by slug |
timeframes | string[] | No | Timeframe windows to receive updates for |
Example
{
"type": "join_room",
"payload": {
"room_id": "polymarket_event_metrics"
}
}
{
"type": "room_message",
"payload": {
"room_id": "polymarket_event_metrics",
"message": {
"action": "subscribe",
"event_slugs": ["us-presidential-election-2026"]
}
}
}
Response
{
"type": "event_metrics_stream_subscribe_response",
"room_id": "polymarket_event_metrics",
"data": {
"event_slugs": ["us-presidential-election-2026"],
"timeframes": [],
"rejected": []
}
}
Events
event_metrics_update
{
"type": "event_metrics_update",
"room_id": "polymarket_event_metrics",
"data": {
"event_slug": "us-presidential-election-2026",
"timeframe": "1h",
"timestamp": 1743500000,
"usd_volume": "2500000.00",
"fees": 5000.0,
"txns": 12400,
"unique_traders": 3200
}
}