> For the complete documentation index, see [llms.txt](https://guides.clickatell.com/flow/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.clickatell.com/flow/action-nodes/action-nodes-is-empty.md).

# Is Empty

The *Is Empty* action node allows the workflow to verify whether a user-input variable (or the response returned via an [*API Integration*](/flow/action-nodes/action-nodes-api-integration.md) node) is empty or not. 

You can define what action should follow in each case - either route the customer to a specific step in the workflow, or trigger another workflow.

<figure><img src="/files/pNYOoSDsQ2TLlK99vBqZ" alt="" width="563"><figcaption><p>Setup of an Is Empty node</p></figcaption></figure>

### **Example**

<figure><img src="/files/CitOih31n5zXOgx8hYlW" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/shzPk2rEVaWZXwodugDn" alt="" width="563"><figcaption></figcaption></figure>