Asset Window Updates - Struct Docs

Room ID: polymarket_asset_window_updates
Endpoint: wss://api.struct.to/ws
Rate: 0.025 credits per message

Stream candle open and close events for crypto assets. At least one of asset_symbols or timeframes is required.

Related guide: Crypto Up/Down feed uses this room for live window open and close resolutions.

You must provide at least one filter. Specify the assets you want to track and the candle timeframes you are interested in.

Filters

Filter	Type	Required	Description
`asset_symbols`	`string[]`	At least one filter required	Asset symbols to track, e.g. `["BTC", "ETH"]`
`timeframes`	`string[]`	At least one filter required	One or more of `5m`, `15m`, `1h`, `4h`, `1d`, `24h`
`subscribe_all`	`boolean`	No	Firehose: receive every window update across all symbols and timeframes. Filters are ignored when set

Example

{
  "type": "join_room",
  "payload": {
    "room_id": "polymarket_asset_window_updates"
  }
}

{
  "type": "room_message",
  "payload": {
    "room_id": "polymarket_asset_window_updates",
    "message": {
      "action": "subscribe",
      "asset_symbols": ["BTC"],
      "timeframes": ["1h"]
    }
  }
}

Response

{
  "type": "asset_window_updates_stream_subscribe_response",
  "room_id": "polymarket_asset_window_updates",
  "data": {
    "asset_symbols": ["BTC"],
    "timeframes": ["1h"]
  }
}

Events

`asset_price_window_update`

{
  "type": "asset_price_window_update",
  "room_id": "polymarket_asset_window_updates",
  "data": {
    "event_type": "window_update",
    "symbol": "BTC",
    "variant": "5m",
    "start_time": 1743499700000,
    "end_time": 1743500000000,
    "open_price": 97200.0,
    "close_price": 97250.50,
    "update_type": "open",
    "published_at": 1743500000000
  }
}

Last modified on July 13, 2026

Asset Prices

Market Metrics

​Subscribe

​Filters

​Example

​Response

​Events

​asset_price_window_update

Subscribe

Filters

Example

Response

Events

`asset_price_window_update`