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Event: event_holder_metrics
Endpoint: wss://api.struct.to/ws/alerts
Cost: 0.025 credits per event
Fires when the holder count updates for one of the events you subscribe to, aggregated across every market in that event. The event_slugs filter is required: you only receive metrics for the event slugs you name.

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Filters

FilterTypeRequiredDescription
event_slugsstring[]YesEvent slugs to track (max 500)

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Subscribe

{
  "op": "subscribe",
  "event": "event_holder_metrics",
  "event_slugs": ["2026-us-midterm-elections"]
}

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Response

{
  "event": "event_holder_metrics",
  "timestamp": 1775913505260,
  "data": {
    "ts": 1713052800,
    "block": 68554321,
    "event_slug": "2026-us-midterm-elections",
    "holder_count": 9120
  }
}
Last modified on June 13, 2026