> ## 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

> Fires on every raw Chainlink price tick for a tracked crypto asset.

<Note>
  **Event:** `asset_price_tick` \
  **Cost:** 0.1 credits per delivery
</Note>

Fires on every raw Chainlink price tick for a tracked crypto asset. The full payload schema is in the auto-generated [Asset Price Tick callback](/api-reference/webhook-callbacks/asset-price-tick-callback) reference; this page documents the filters and matching behavior.

<Tip>
  **Related guide:** [Crypto Up/Down feed](/guides/crypto-up-down-feed) builds on these asset price resolutions, including delivery over webhooks.
</Tip>

## When to use this

* Stream live spot prices for specific assets into your own pricing engine.
* Drive real-time price displays or alerting off the raw Chainlink feed.
* Reconstruct fine-grained price history from individual ticks.

## Subscription filters

Add these to the `filters` object when you create the subscription.

| Filter          | Type      | Description                                                                   |
| --------------- | --------- | ----------------------------------------------------------------------------- |
| `asset_symbols` | string\[] | Restrict to crypto assets: `BTC`, `ETH`, `SOL`, `XRP`, `DOGE`, `BNB`, `HYPE`. |

## Example

```json theme={null}
{
  "url": "https://your-server.com/webhooks",
  "event": "asset_price_tick",
  "filters": {
    "asset_symbols": ["BTC", "ETH"]
  }
}
```

## Notes

<Warning>
  This is a high-volume event — it fires on every price tick. Always filter to specific `asset_symbols` and expect a large number of deliveries.
</Warning>