# Cloud Flow Invoke Hook

{% hint style="info" %}
**Block Information**

Available in: Page Flow

Toolbox Category: Cloud Flow

Block Type: [Regular](/app-editor/page-flow/block-anatomy.md#regular-block)
{% endhint %}

The **`Cloud Flow Invoke Hook`** block is used to communicate with a [Web Hook Cloud Flow](/app-editor/cloud-flow.md#web-hook) defined in your app, from a page or form.

<div align="left"><figure><img src="/files/C2yLwzSU0s8XvI9NHIqh" alt="" width="398"><figcaption><p>Invoke Cloud Flow Hook block</p></figcaption></figure></div>

{% hint style="success" %}
For security purposes, this block only works with web hook cloud flows with a POST method.
{% endhint %}

The block consists of the following (from top to bottom)::

* *Hook URL:* [Value Parameter](/app-editor/page-flow/block-anatomy.md#value-parameters) that accepts a [*text*](/app-editor/page-flow/references/value-types.md) value representing the unique URL of the Web Hook. The [Cloud Flow : URL of Web Hook](/app-editor/page-flow/toolbox-blocks/cloud-flow-url-of-web-hook.md) block comes pre-attached for easy selection of the available web hooks.
* *Data*: Optional [Value Parameter](/app-editor/page-flow/block-anatomy.md#value-parameters) that accepts an [object](/app-editor/page-flow/references/value-types.md) value representing the request data to be sent to the web hook.
* *Success Tasks*: a [Flow Parameter](/app-editor/page-flow/block-anatomy.md#flow-parameters) where you connect blocks that specify what you want done when the operation completes successfully. The [HTTP Data](/app-editor/page-flow/toolbox-blocks/http-data.md) block can be used to access the output (if any).
* *Fail Tasks*: a [Flow Parameter](/app-editor/page-flow/block-anatomy.md#flow-parameters) where you connect blocks that specify what you want done when the operation reports an error. The [HTTP Error](/app-editor/page-flow/toolbox-blocks/http-error.md) block can be used to access the error information.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.zingy.ai/app-editor/page-flow/toolbox-blocks/cloud-flow-invoke-hook.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.