# Trigger Retool Workflows

With PixieBrix, you can trigger a Retool Workflow from any web app.

PixieBrix triggers [Retool Workflows via Webhook](https://docs.retool.com/workflows/guides/webhooks)

### Preparing your Retool Workflow

1. [Add/Enable a Webhook Trigger for your Workflow](https://docs.retool.com/workflows/guides/webhooks#add-a-webhook-trigger)<br>

   <figure><img src="/files/nFcd8KmRzEpkT18itbnF" alt=""><figcaption></figcaption></figure>
2. (Optional) [Configure your Workflow to use the payload](https://docs.retool.com/workflows/guides/webhooks#retrieve-event-payload) of the `startTrigger` object
3. Copy the URL of the Webhook<br>

   <figure><img src="/files/6BY14ZPkIxWvXgmH6SPU" alt=""><figcaption></figcaption></figure>

### Triggering the Retool Workflow from PixieBrix

1. Add the HTTP Request Brick to your Mod
2. Configure the HTTP Request Brick
   * `URL`: the Webhook URL copied from the Retool interface
   * `Method`: post
   * `JSON Data`: (Optional) the payload to pass to the Webhook<br>

     <figure><img src="/files/9PuTOzlSpYyo5Sx95FSX" alt=""><figcaption></figcaption></figure>


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