# Attached

The new URL address for the webhook, created when a user opens the instant trigger and creates a new webhook, is automatically registered to the service using the attach procedure, and can be unregistered using the detach procedure.

## Attach <a href="#attach" id="attach"></a>

The attach remote procedure is used to automatically attach a webhook to a remote service. You will need to detach this RPC later, and for that you will need the remote procedure’s Id.

{% tabs %}
{% tab title="Attach remote procedure" %}

```json
{
    "url": "https://www.example.com/api/webhook",
    "method": "POST",
    "body": {
        "url": "{{webhook.url}}"
    },
    "response": {
        "data": {
            "externalHookId": "{{body.id}}",
            "token": "{{body.token}}"
        }
    }
}
```

{% hint style="info" %}
If the API returns a parameter that should be used in the detach remote procedure, you need to make sure the parameter is mapped in the `response.data` collection, otherwise the parameter will not be available via `webhook.parameter` mapping (see the `token` in the example above).
{% endhint %}
{% endtab %}
{% endtabs %}

To save the remote webhook id (in order for detach to work), you must use the `response.data` collection. This collection is available in the detach webhook remote procedure as the `webhook` IML variable.

The `webhook` collection with the webhook’s data is also accessible in regular remote procedure calls if the call is processed in the context of an instant trigger. For example, if you create a dynamic interface for an instant trigger based on parameters entered when the webhook was created.

## Detach <a href="#detach" id="detach"></a>

The detach remote procedure is used to automatically detach (delete) a webhook from a remote service when it is no longer needed. The only thing you need to do is to correctly specify the URL to detach a webhook. No response processing is needed.

{% tabs %}
{% tab title="Detach remote procedure" %}

```json
{
    "url": "https://www.example.com/api/webhook/{{webhook.externalHookId}}",
    "method": "DELETE"
}
```

{% endtab %}
{% endtabs %}