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

# Nodes

> The building blocks of a workflow

A workflow is a graph of nodes. Each one handles a step of the call — greeting the caller, holding part of the conversation, ending the call — and the edges between them decide where the conversation goes next.

## Conversation

<CardGroup cols={2}>
  <Card title="Start Call" href="/talk/voice-agent/start-call">
    Opens the call and sets how the agent greets the caller
  </Card>

  <Card title="Agent" href="/talk/voice-agent/agent">
    Holds the prompt that drives one step of the conversation
  </Card>

  <Card title="Global" href="/talk/voice-agent/global">
    A prompt appended to every other node
  </Card>

  <Card title="End Call" href="/talk/voice-agent/end-call">
    The agent's final message before hanging up
  </Card>
</CardGroup>

## Around the call

<CardGroup cols={2}>
  <Card title="API Trigger" href="/talk/voice-agent/api-trigger">
    Starts outbound calls from an external system
  </Card>

  <Card title="Webhook" href="/talk/voice-agent/webhook">
    Sends the result of a run to your own systems
  </Card>

  <Card title="QA" href="/talk/voice-agent/qa">
    Scores calls automatically after they end
  </Card>
</CardGroup>