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

# TopCalls Voice API

> AI-powered calling, fully managed. Replace manual dialing. Scale without hiring. First calls live in 2 weeks.

## AI-Powered Calling, Fully Managed

TopCalls runs your calls so you can close the deals. We provide production-ready telephony infrastructure, AI orchestration, and platform tooling for automating customer phone interactions at scale. Every module is production-ready, compliance-built, and scales with your volume.

<CardGroup cols={2}>
  <Card title="Low-Latency Conversations" icon="bolt" href="/concepts/ai-voice">
    Natural, human-like conversations with sub-500ms response times. Your callers won't know it's AI.
  </Card>

  <Card title="Campaign Management" icon="bullhorn" href="/concepts/campaigns">
    Queue management for automated calls with timezone awareness, retry logic, and real-time monitoring.
  </Card>

  <Card title="Voice Selection & Cloning" icon="microphone" href="/guides/custom-voices">
    Choose from dozens of built-in voices or clone your own for brand consistency.
  </Card>

  <Card title="Function Calling" icon="screwdriver-wrench" href="/guides/function-calling">
    Give your AI agents tools to book appointments, look up orders, update CRMs, and integrate with your systems mid-call.
  </Card>

  <Card title="Knowledge Bases" icon="book" href="/guides/knowledge-bases">
    Add text entries with product, pricing, and policy details. Your agents access the attached context automatically during conversations.
  </Card>

  <Card title="Analytics & Insights" icon="chart-line" href="/api-reference/introduction">
    Automatic call summaries, sentiment analysis, structured data extraction, and webhooks for every call.
  </Card>
</CardGroup>

## What You Can Build

<CardGroup cols={2}>
  <Card title="Inbound Reception" icon="phone" href="/use-cases/customer-support">
    Automate inbound call handling, triage common inquiries, and route complex issues to human agents.
  </Card>

  <Card title="Appointment Management" icon="calendar-check" href="/use-cases/appointment-reminders">
    Automate confirmations, rescheduling, and reminders. Reduce no-shows and improve scheduling efficiency.
  </Card>

  <Card title="Lead Qualification" icon="filter" href="/use-cases/sales-outreach">
    Qualify inbound and warm leads, schedule follow-ups, and route qualified prospects to your sales team.
  </Card>

  <Card title="Customer Support" icon="headset" href="/use-cases/customer-support">
    Handle common support inquiries around the clock. Provide instant responses and escalate complex issues.
  </Card>

  <Card title="Post-Purchase Follow-ups" icon="check-circle" href="/use-cases/appointment-reminders">
    Automate NPS surveys, renewal reminders, and post-purchase check-ins.
  </Card>

  <Card title="Compliance & Collections" icon="shield-check" href="/use-cases/debt-collection">
    Professional, compliant collection calls with payment plan negotiation and full audit trails.
  </Card>
</CardGroup>

## Get Started

<CardGroup cols={2}>
  <Card title="Quickstart Guide" icon="rocket" href="/quickstart">
    Make your first AI phone call in under 5 minutes.
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/introduction">
    Complete REST API documentation with interactive examples and code samples.
  </Card>
</CardGroup>

## How It Works

1. **You call our API** with a phone number, instructions for the AI agent, and a voice
2. **We handle everything** from telephony to AI orchestration to audio processing
3. **You get results** via webhooks with transcripts, recordings, summaries, and structured data

36+ languages supported. Timezone-aware scheduling. Carrier-grade reliability.

**Free consultation, tailored proposal delivered within 48 hours.**

Customers remain responsible for lawful use and compliance with local calling regulations.

<Note>
  **New to AI voice agents?** Start with our [Quickstart Guide](/quickstart) to make your first call in minutes, or explore [How It Works](/concepts/overview) to understand the platform.
</Note>