# slotSubscribe

(Subscription Websocket) Subscribe to receive notification anytime a slot is processed by the validator.

This method will use `20` [Compute Units](/v1/about/billing.md).

***

## **Parameters**

None.

## Returns

`result` The result will be an RpcResponse JSON object with id equal to the subscription id (needed to unsubscribe).

`Notification Format:` The notification format is the same as seen in the getAccountInfo RPC HTTP method

* `parent` The parent slot.
* `root` The current root slot.
* `slot` The newly set slot.

```bash
// Result
{ "jsonrpc": "2.0", "result": 0, "id": 1 }
```

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

<pre class="language-bash"><code class="lang-bash"><strong>wscat -c wss://mainnet.solana.validationcloud.io/v1/&#x3C;YOUR_API_KEY_HERE>
</strong># wait for connection
{"id":1,"jsonrpc":"2.0","method": "slotSubscribe" }
    
</code></pre>

{% endtab %}

{% tab title="devnet" %}

```bash
wscat -c wss://devnet.solana.validationcloud.io/v1/<YOUR_API_KEY_HERE>
# wait for connection
{"id":1,"jsonrpc":"2.0","method": "slotSubscribe" }
    
```

{% endtab %}
{% endtabs %}


---

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```
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```

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