> ## Documentation Index
> Fetch the complete documentation index at: https://docs.struct.to/llms.txt
> Use this file to discover all available pages before exploring further.

# Asset Price Tick

> Get notified on every raw Chainlink price tick for tracked crypto assets.

<Note>
  **Event:** `asset_price_tick` \
  **Endpoint:** `wss://api.struct.to/ws/alerts` \
  **Cost:** 0.1 credits per event
</Note>

Get notified on every raw Chainlink price tick for tracked crypto assets. Optionally filter by asset symbol to receive only the ticks you need.

<Tip>
  **Related guide:** [Crypto Up/Down feed](/guides/crypto-up-down-feed) builds on these asset price ticks to chart the spot price behind Up/Down markets.
</Tip>

## Filters

| Filter          | Type      | Required | Description                                                                    |
| --------------- | --------- | -------- | ------------------------------------------------------------------------------ |
| `asset_symbols` | string\[] | No       | Supported symbols: `BTC`, `ETH`, `SOL`, `XRP`, `DOGE`, `BNB`, `HYPE` (max 500) |

## Subscribe

```json theme={null}
{
  "op": "subscribe",
  "event": "asset_price_tick",
  "asset_symbols": ["BTC", "ETH"]
}
```

## Response

```json theme={null}
{
  "event": "asset_price_tick",
  "timestamp": 1775913505260,
  "data": {
    "symbol": "BTC",
    "price": 84532.17,
    "timestamp_ms": 1775913505100
  }
}
```