> 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/user-facing-nodes/input-nodes.md).

# Input nodes

*Input* nodes require some form of input from your customers.

The following *Input* nodes are available:

* [**Contact Receiving** ](/flow/user-facing-nodes/input-nodes/contact-receiving.md)- Request contact information from your customers and use the information as [variables ](broken://pages/-MiLNKY7ENp-stXfwsBb)in your workflow.
* [**OAuth Request**](/flow/user-facing-nodes/input-nodes/oauth-request.md) - Allows you to authenticate your customers securely against your chosen identity provider (IDP).
* [**Request input**](/flow/user-facing-nodes/input-nodes/menu-nodes-ask-for-input.md) - Ask customers to enter information (e.g., words, dates, numbers) that are saved as variables to be used later in the workflow.
* [**Send Form**](/flow/user-facing-nodes/input-nodes/send-form.md) - Create rich, multipage interactive forms for customers to complete on their mobile devices. *(Apple Messages for Business only)*
* [**Time Picker** ](/flow/user-facing-nodes/input-nodes/time-picker.md)- Allows a customer to select a slot from a list of available times, e.g., to make an appointment or schedule a delivery.  *(Apple Messages for Business only)*


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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://guides.clickatell.com/flow/user-facing-nodes/input-nodes.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.