> For the complete documentation index, see [llms.txt](https://docs.tardis.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tardis.dev/historical-data-details/kraken.md).

# Kraken

Kraken historical data for **all its currency pairs** is available since **2019-06-04**.

{% embed url="<https://api.tardis.dev/v1/exchanges/kraken>" %}
See Kraken historical data coverage: available symbols, channels, date ranges and incidents
{% endembed %}

### Symbol changes

Kraken WebSocket v2 uses `BTC` and `DOGE` in exchange-native symbol IDs. WebSocket v1 used `XBT` and `XDG`. Use v1 symbols before **2026-07-10** and v2 symbols from that date onward. This applies to both base and quote currencies, for example:

* `XBT/USD` → `BTC/USD`
* `XDG/USD` → `DOGE/USD`
* `ETH/XBT` → `ETH/BTC`

To resolve symbol IDs programmatically, query the [Instruments Metadata API](/api/instruments-metadata-api.md) using normalized `baseCurrency` and `quoteCurrency` values:

```json
{
  "baseCurrency": "BTC",
  "quoteCurrency": "USD",
  "type": "spot"
}
```

The response includes both exchange-native symbol IDs:

| id        | active  | availableSince             | availableTo                |
| --------- | ------- | -------------------------- | -------------------------- |
| `XBT/USD` | `false` | `2019-06-04T00:00:00.000Z` | `2026-07-10T00:00:00.000Z` |
| `BTC/USD` | `true`  | `2026-07-10T00:00:00.000Z` |                            |

### Downloadable **CSV** files

Historical CSV datasets for the first day of each month are **available to download without API key**. See [downloadable CSV files documentation](/downloadable-csv-files/overview.md).

| data type             | symbol  | date       |                                                                                                        |
| --------------------- | ------- | ---------- | ------------------------------------------------------------------------------------------------------ |
| incremental\_book\_L2 | XBT-USD | 2019-07-01 | [Download sample](https://datasets.tardis.dev/v1/kraken/incremental_book_L2/2019/07/01/XBT-USD.csv.gz) |
| trades                | XBT-USD | 2019-07-01 | [Download sample](https://datasets.tardis.dev/v1/kraken/trades/2019/07/01/XBT-USD.csv.gz)              |
| quotes                | XBT-USD | 2019-07-01 | [Download sample](https://datasets.tardis.dev/v1/kraken/quotes/2019/07/01/XBT-USD.csv.gz)              |

### API Access and data format

Historical data format is the same as provided by real-time Kraken WebSocket **v2** API from **2026-07-10** onward, with addition of local timestamps. Data before **2026-07-10** uses Kraken WebSocket **v1** format. If you'd like to work with **normalized data format** instead (same format for each exchange) see [downloadable CSV files](/downloadable-csv-files/overview.md) or official [client libs](/api/quickstart.md) that can perform data normalization client-side.

{% tabs %}
{% tab title="Python" %}

```python
# pip install tardis-dev
import asyncio
from tardis_dev import Channel, replay

async def main():
    async for local_timestamp, message in replay(
        exchange="kraken",
        from_date="2026-08-01",
        to_date="2026-08-02",
        filters=[Channel(name="book", symbols=["BTC/USD"])],
        api_key="YOUR_API_KEY",
    ):
        # messages as provided by Kraken real-time stream
        print(message)

asyncio.run(main())
```

See [Python client docs](/python-client/quickstart.md).
{% endtab %}

{% tab title="Node.js" %}

```javascript
// npm install tardis-dev
import { replay } from 'tardis-dev';

const messages = replay({
  exchange: 'kraken',
  from: '2026-08-01',
  to: '2026-08-02',
  filters: [{ channel: 'book', symbols: ['BTC/USD'] }],
  apiKey: 'YOUR_API_KEY'
});

// messages as provided by Kraken real-time stream
for await (const { localTimestamp, message } of messages) {
  console.log(localTimestamp, message);
}
```

See [Node.js client docs](/node-client/quickstart.md).
{% endtab %}

{% tab title="cURL & HTTP API" %}

```bash
curl --compressed -g 'https://api.tardis.dev/v1/data-feeds/kraken?from=2026-08-01&filters=[{"channel":"book","symbols":["BTC/USD"]}]&offset=0'
```

{% embed url="<https://api.tardis.dev/v1/data-feeds/kraken?from=2026-08-01&filters=[{%22channel%22:%22book%22,%22symbols%22:[%22BTC/USD%22]}]&offset=0>" %}
Example API response for Kraken historical market data request
{% endembed %}

See [HTTP API docs](/api/http-api-reference.md).
{% endtab %}

{% tab title="cURL & tardis-machine" %}

```bash
curl -g 'localhost:8000/replay?options={"exchange":"kraken","filters":[{"channel":"book","symbols":["BTC/USD"]}],"from":"2026-08-01","to":"2026-08-02"}'
```

[Tardis-machine](/tardis-machine/quickstart.md) is a locally runnable server that exposes API allowing efficiently requesting historical market data for whole time periods in contrast to [HTTP API](/api/http-api-reference.md) that provides data only in minute by minute slices.

See [tardis-machine](/tardis-machine/quickstart.md) docs.
{% endtab %}
{% endtabs %}

### Captured real-time channels

{% embed url="<https://docs.kraken.com/exchange/api-reference/spot-websocket>" %}
See Kraken WebSocket API docs providing documentation for each captured channel's format
{% endembed %}

{% hint style="info" %}
Click any channel below to see [HTTP API](/api/http-api-reference.md#data-feeds-exchange) response with historical data recorded for it.
{% endhint %}

**Current channels (API v2, since 2026-07-10):**

* [trade](https://api.tardis.dev/v1/data-feeds/kraken?from=2026-08-01\&filters=\[{%22channel%22:%22trade%22}]) Public trade executions stream
* [book](https://api.tardis.dev/v1/data-feeds/kraken?from=2026-08-01\&filters=\[{%22channel%22:%22book%22,%22symbols%22:\[%22BTC/USD%22]}]) Level 2 order book snapshots and updates with `depth=1000`
* [ticker](https://api.tardis.dev/v1/data-feeds/kraken?from=2026-08-01\&filters=\[{%22channel%22:%22ticker%22}]) Level 1 market data and 24h statistics, published when the best bid or offer changes (`event_trigger=bbo`)
* [instrument](https://api.tardis.dev/v1/data-feeds/kraken?from=2026-08-01\&filters=\[{%22channel%22:%22instrument%22}]) Reference data snapshots and updates for all active assets and tradeable pairs, including tokenized assets

**Legacy channels (API v1, until 2026-07-10):**

* [trade](https://api.tardis.dev/v1/data-feeds/kraken?from=2024-01-01\&filters=\[{%22channel%22:%22trade%22}]) Public trade executions stream
* [book](https://api.tardis.dev/v1/data-feeds/kraken?from=2024-01-01\&filters=\[{%22channel%22:%22book%22,%22symbols%22:\[%22XBT/USD%22]}]) Order book snapshots and deltas recorded with depth=1000
* [spread](https://api.tardis.dev/v1/data-feeds/kraken?from=2024-01-01\&filters=\[{%22channel%22:%22spread%22,%22symbols%22:\[%22XBT/USD%22]}]) Best bid and ask spread updates stream
* [ticker](https://api.tardis.dev/v1/data-feeds/kraken?from=2024-01-01\&filters=\[{%22channel%22:%22ticker%22}]) Ticker updates with best bid and ask plus 24h stats

### Market data collection details

[Market data collection infrastructure](/faq/general.md#what-is-your-infrastructure-setup) for Kraken is located in GCP europe-west2 region (London, UK).

Real-time market data is captured via **multiple WebSocket connections** to `wss://ws.kraken.com/v2`. Before **2026-07-10**, data was captured from Kraken WebSocket v1 at `wss://ws.kraken.com`.

{% hint style="info" %}
Kraken's Spot trading engine is hosted at Equinix in London, UK.
{% endhint %}


---

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