> ## Documentation Index
> Fetch the complete documentation index at: https://agentline-seo-meta-2026-08-18.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Phone Numbers, Voice & SMS API for AI Agents

> AgentLine is the AI-native telephony API — give any AI agent a real US or Canadian phone number for outbound calls, inbound voice, and SMS. Guides, SDKs (Python & Node), pricing, and interactive API reference.

# AgentLine

AgentLine is an AI-native telephony platform. Give your agent a real phone
number, a human-like voice, and the ability to make and receive calls and SMS
autonomously.

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Get a number and make your first call in five minutes.
  </Card>

  <Card title="API Reference" icon="square-terminal" href="/api-reference">
    Every endpoint, with an interactive playground.
  </Card>

  <Card title="Python SDK" icon="https://mintcdn.com/agentline-seo-meta-2026-08-18/UBIN_mcQU_QRvtVp/images/python.svg?fit=max&auto=format&n=UBIN_mcQU_QRvtVp&q=85&s=ad6f192d9d1b3e6a52bcc185bb0a7146" href="/sdk/python" width="24" height="24" data-path="images/python.svg">
    `pip install agentline-ai`
  </Card>

  <Card title="Node SDK" icon="https://mintcdn.com/agentline-seo-meta-2026-08-18/UBIN_mcQU_QRvtVp/images/node.svg?fit=max&auto=format&n=UBIN_mcQU_QRvtVp&q=85&s=b23d75c463c5b59486786f8a3bef990b" href="/sdk/node" width="24" height="24" data-path="images/node.svg">
    `npm i agentline`
  </Card>
</CardGroup>

## What you can build

* **AI phone agents** that answer and place real calls.
* **Outbound dialers** for sales, follow-ups, and reminders.
* **AI receptionists** that route and transfer calls.
* **SMS assistants** that text on your agent's behalf.

## How it works

```
1. Create an agent        POST /v1/agents
2. Buy a phone number     POST /v1/numbers
3. Make / receive calls   POST /v1/calls      (real-time transcription + TTS)
4. Get results            GET  /v1/calls/{id}/transcript  or  webhooks/events
```

Every request is authenticated with `Authorization: Bearer al_live_***`

## FAQ

**How do I get a phone number for my AI agent?**
Sign up at agentline.cloud, provision a US or Canadian number, and install the AgentLine skill on your agent (OpenClaw, Hermes Agent, or any LLM) — usually under 5 minutes.

**Can my AI agent use one number for calls and SMS?**
Yes. The same number handles outbound calls, inbound voice, and SMS.

**Do I need Twilio or WebSockets?**
No. AgentLine's relay architecture handles call control, real-time transcription, and text-to-speech for you — your agent just responds with text.

**How much does AgentLine cost?**
Numbers are $2/month, voice calls $0.10/minute. No monthly platform fees.