Position Volume Spike

Event: position_volume_spike
Endpoint: wss://api.struct.to/ws/alerts
Cost: 0.2 credits per event

Get notified when a position’s volume exceeds its baseline by a configured ratio. The spike_ratio filter is required and defines the volume multiplier threshold.

Filters

Filter	Type	Required	Description
`spike_ratio`	number	Yes	Volume multiplier threshold, must be greater than 1.0 (e.g. 2.0 = 2x baseline)
`position_ids`	string[]	No	Restrict to specific positions (max 500)
`condition_ids`	string[]	No	Restrict to specific conditions (max 500)
`outcomes`	string[]	No	Filter by outcome name, e.g. `["Yes", "No"]` (max 500)
`timeframes`	string[]	No	Timeframe windows: `1m`, `5m`, `30m`, `1h`, `6h`, `24h`, `7d`, `30d` (max 500)
`window_secs`	number	No	Window reset interval in seconds (1-600)

{
  "op": "subscribe",
  "event": "position_volume_spike",
  "spike_ratio": 2.5,
  "timeframes": ["5m", "30m"]
}

Response

{
  "event": "position_volume_spike",
  "timestamp": 1775913505260,
  "data": {
    "position_id": "0xabc123",
    "condition_id": "0x1234567890abcdef",
    "question": "Will the Fed cut rates in December?",
    "market_slug": "fed-decision-december-2028",
    "event_slug": "us-presidential-election-2028",
    "image_url": "https://polymarket-upload.s3.us-east-2.amazonaws.com/example.png",
    "outcome": "Yes",
    "outcome_index": 0,
    "timeframe": "5m",
    "current_volume_usd": 8750.00,
    "snapshot_volume_usd": 3200.00,
    "delta_volume_usd": 5550.00,
    "spike_pct": 173.44,
    "txns": 28,
    "fees": 87.50
  }
}

Last modified on April 30, 2026

Event Volume Spike

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Position Volume Spike

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