> ## Documentation Index
> Fetch the complete documentation index at: https://docs.klatt.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Start Call node

> Configure the entry point that greets the caller, establishes initial context, and begins the first conversational turn.

Configure the entry point that greets the caller, establishes initial context, and begins the first conversational turn.

## Prerequisites

* A workflow draft.
* An approved AI disclosure and an optional greeting style.

## Configure the entry point

1. Add or open the **Start Call** node.
2. Choose the required AI disclosure behavior and write a short opening prompt.
3. Select **Text (TTS)** or **Pre-recorded Audio** for an optional greeting.
4. Enable interruption or delayed start only when the call experience needs it.
5. Add tools, documents, or a pre-call fetch when the opening turn needs them.

## Constraints and failure states

Every workflow needs exactly one entry node, and it cannot have an incoming edge. Text greetings are not supported with realtime speech-to-speech models. Delayed start accepts a short wait between 0.1 and 10 seconds. A pre-call fetch that fails contributes no variables; see [Pre-call data fetch](/voice-agent/pre-call-data-fetch).

## Protect your data

The first prompt can be spoken aloud and recorded. Do not put secrets, private URLs, or unnecessary personal data in the greeting or disclosure.

## Related

* [Agent node](/voice-agent/agent)
* [Pre-recorded audio](/voice-agent/pre-recorded-audio)
* [Context and variables](/core-concepts/context-and-variables)


## Related topics

- [Pre-call data fetch](/voice-agent/pre-call-data-fetch.md)
- [Workflow fundamentals](/voice-agent/introduction.md)
- [Pre-recorded audio](/voice-agent/pre-recorded-audio.md)
- [Editing a workflow](/voice-agent/editing-a-workflow.md)
- [Turn interruption settings](/configurations/interruption.md)