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

# Available Feeds

> All crypto price feeds with live examples.

## Feed reference

All feeds update at approximately 1 tick per second. Prices are quoted in USD.

### BTC/USD

Bitcoin. The most liquid and widely traded crypto asset.

```json theme={null}
{
  "type": "price_feed",
  "feed": "BTC/USD",
  "timestamp": 1774672089,
  "data": {
    "feed": "BTC/USD",
    "price": 66236.61,
    "bid": 66229.77,
    "ask": 66237.94,
    "timestamp": 1774672089
  }
}
```

<Note>BTC/USD has bid/ask spread data. Other feeds currently report bid and ask equal to the mid price.</Note>

### ETH/USD

Ethereum.

```json theme={null}
{
  "type": "price_feed",
  "feed": "ETH/USD",
  "timestamp": 1774672588,
  "data": {
    "feed": "ETH/USD",
    "price": 1989.68,
    "bid": 1989.68,
    "ask": 1989.68,
    "timestamp": 1774672588
  }
}
```

### SOL/USD

Solana.

```json theme={null}
{
  "type": "price_feed",
  "feed": "SOL/USD",
  "timestamp": 1774672588,
  "data": {
    "feed": "SOL/USD",
    "price": 82.57,
    "bid": 82.57,
    "ask": 82.57,
    "timestamp": 1774672588
  }
}
```

### BNB/USD

BNB (Binance).

```json theme={null}
{
  "type": "price_feed",
  "feed": "BNB/USD",
  "timestamp": 1774672588,
  "data": {
    "feed": "BNB/USD",
    "price": 610.54,
    "bid": 610.54,
    "ask": 610.54,
    "timestamp": 1774672588
  }
}
```

### XRP/USD

XRP.

```json theme={null}
{
  "type": "price_feed",
  "feed": "XRP/USD",
  "timestamp": 1774672588,
  "data": {
    "feed": "XRP/USD",
    "price": 1.326,
    "bid": 1.326,
    "ask": 1.326,
    "timestamp": 1774672588
  }
}
```

### DOGE/USD

Dogecoin.

```json theme={null}
{
  "type": "price_feed",
  "feed": "DOGE/USD",
  "timestamp": 1774672588,
  "data": {
    "feed": "DOGE/USD",
    "price": 0.08991,
    "bid": 0.08991,
    "ask": 0.08991,
    "timestamp": 1774672588
  }
}
```

### HYPE/USD

Hyperliquid.

```json theme={null}
{
  "type": "price_feed",
  "feed": "HYPE/USD",
  "timestamp": 1774672588,
  "data": {
    "feed": "HYPE/USD",
    "price": 38.60,
    "bid": 38.60,
    "ask": 38.60,
    "timestamp": 1774672588
  }
}
```

## Filtering

Subscribe to specific feeds only:

```json theme={null}
{
  "action": "subscribe",
  "type": "chainlink",
  "filters": {
    "feeds": ["BTC/USD", "ETH/USD", "SOL/USD"]
  }
}
```

Feed names are case-insensitive. `"btc/usd"` and `"BTC/USD"` both work.

## Subscribing to all feeds

Omit the `feeds` filter:

```json theme={null}
{"action": "subscribe", "type": "chainlink"}
```

You'll receive \~7 events per second (one per feed). At approximately 200 bytes per event, that's under 1.5 KB/s of bandwidth.