> For the complete documentation index, see [llms.txt](https://docs.unix.market/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unix.market/websocket/public-channels/kline.md).

# Kline

Push K-line updates after block finalization, only when the bar changes.

> **No auth.** Within a bar, you receive **at most one update per block** with the latest aggregated values. When the bar closes, the final values are pushed; the next bar then opens.

## Subscribe

```json
{ "channel": "kline", "symbol_id": 100001, "interval": "1m" }
```

`interval` ∈ `1m / 5m / 15m / 30m / 1h / 2h / 4h / 6h / 8h / 12h / 1d / 1w / 1M`.

## Payload

| Field | Type         | REST equivalent |
| :---: | ------------ | --------------- |
|  `s`  | integer (ms) | `start`         |
|  `i`  | string       | `interval`      |
|  `o`  | string       | `open`          |
|  `c`  | string       | `close`         |
|  `h`  | string       | `high`          |
|  `l`  | string       | `low`           |
|  `v`  | string       | `volume`        |
|  `u`  | string       | `turnover`      |

## Example Push

```json
{
  "channel": "kline",
  "symbol_id": 100001,
  "ts": 1719500060150,
  "finality": "final",
  "data": {
    "s": 1719500000000,
    "i": "1m",
    "o": "67400.00",
    "c": "67500.50",
    "h": "67520.00",
    "l": "67380.00",
    "v": "12.345",
    "u": "832487.65",
    "t": 1719500059900
  }
}
```


---

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