Asset Price Window Update

Event: asset_price_window_update
Endpoint: wss://api.struct.to/ws/alerts
Cost: 0.1 credits per event

Get notified when a crypto asset candle opens or closes. Use filters to narrow alerts to specific symbols or timeframes.

Related guide: Crypto Up/Down feed builds on these window open and close events to resolve Up/Down outcomes.

Filters

Filter	Type	Required	Description
`asset_symbols`	string[]	No	Supported symbols: `BTC`, `ETH`, `SOL`, `XRP`, `DOGE`, `BNB`, `HYPE` (max 500)
`timeframes`	string[]	No	Valid timeframes: `5m`, `15m`, `1h`, `4h`, `1d`, `24h` (max 500)

The backend normalizes 1d to 24h in the response variant field.

{
  "op": "subscribe",
  "event": "asset_price_window_update",
  "asset_symbols": ["BTC", "ETH"],
  "timeframes": ["1h", "4h"]
}

Response

{
  "event": "asset_price_window_update",
  "timestamp": 1775913505260,
  "data": {
    "symbol": "BTC",
    "variant": "1h",
    "start_time": 1775910000000,
    "end_time": 1775913600000,
    "open_price": 84120.50,
    "close_price": 84532.17,
    "update_type": "close"
  }
}

Last modified on June 8, 2026

Asset Price Tick

Introduction

Rooms

Alerts

Asset Price Window Update

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Response

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Response