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

# Arbol API Documentation - Voice AI for Phone Calls

> Build voice AI agents that handle phone calls at scale. Deploy AI receptionists, sales agents, and customer support with our REST API. Complete guides and code examples.

## Build Voice AI That Actually Talks to Your Customers

Arbol gives you a REST API to deploy AI agents that handle real phone conversations. Create agents that answer customer calls, qualify leads, schedule appointments, or run outbound campaigns—all without hiring a call center.

<Note>
  **Terminology**: In the Arbol dashboard, agents are called "AI Employees" for end users. In this API documentation, we use "agents" for technical consistency.
</Note>

<CardGroup cols={2}>
  <Card title="Quickstart" icon="bolt" href="/quickstart">
    Make your first API call in under 5 minutes
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/introduction">
    Browse all endpoints with code examples
  </Card>

  <Card title="Platform Guide" icon="book" href="/platform-guide/getting-started">
    Use the dashboard (no-code setup)
  </Card>

  <Card title="Need Help?" icon="life-ring" href="mailto:david@getarbol.com">
    Email us at [david@getarbol.com](mailto:david@getarbol.com)
  </Card>
</CardGroup>

## Core Resources

<CardGroup cols={2}>
  <Card title="Agents" icon="robot" href="/api-reference/agents/list">
    Deploy AI agents with custom voices, instructions, and tools—available 24/7
  </Card>

  <Card title="Contacts" icon="address-book" href="/api-reference/contacts/list">
    Store unlimited contacts with custom fields and full-text search
  </Card>

  <Card title="Conversations" icon="phone" href="/api-reference/conversations/list">
    Access every call's transcript, audio recording, and outcome in real-time
  </Card>

  <Card title="Campaigns" icon="bullhorn" href="/api-reference/campaigns/list">
    Make thousands of outbound calls simultaneously with automatic retry logic
  </Card>
</CardGroup>

## What You Can Build

* **24/7 Customer Support** - AI agents that answer common questions and route complex cases to humans
* **Lead Qualification** - Screen thousands of prospects and book meetings only with qualified leads
* **Appointment Scheduling** - Sync with your calendar to book, confirm, and reschedule appointments automatically
* **Outbound Sales** - Call every lead in your CRM and track exactly which messages convert
* **Feedback Collection** - Run surveys at scale and get structured data from every response
* **Multilingual Support** - One agent that speaks 20+ languages and auto-detects the caller's preference
* **Custom Workflows** - Connect webhooks to trigger actions in your CRM, help desk, or internal tools
* **Real-Time Analytics** - See transcripts, listen to recordings, and measure performance as calls happen