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Event: asset_price_window_update
Cost: 0.1 credits per delivery
Fires twice per candle for a tracked asset — once when the window opens and once when it closes. The full payload schema is in the auto-generated Asset Price Window Update callback reference; this page documents the filters and matching behavior.
Related guide: Crypto Up/Down feed builds on these window open and close events to resolve Up/Down outcomes.

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When to use this

  • Build live OHLC candles for specific assets and timeframes.
  • React the moment a candle opens or closes to update charts or indicators.
  • Feed windowed price data into trading signals or backtests.

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Subscription filters

Add these to the filters object when you create the subscription.
FilterTypeDescription
asset_symbolsstring[]Restrict to crypto assets: BTC, ETH, SOL, XRP, DOGE, BNB, HYPE.
timeframesstring[]One or more candle sizes: 5m, 15m, 1h, 4h, 1d, 24h.

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Example

{
  "url": "https://your-server.com/webhooks",
  "event": "asset_price_window_update",
  "filters": {
    "asset_symbols": ["BTC", "ETH"],
    "timeframes": ["5m", "1h"]
  }
}

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Notes

  • This event fires twice per candle — once when the window opens and once when it closes — so expect two deliveries per candle for each subscribed timeframe.
Last modified on June 8, 2026