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AgentLine

AgentLine is an AI-native telephony platform. Give your agent a real US phone number and a human-like voice so it can make and receive calls and receive SMS.

Quickstart

Get a number and make your first call in five minutes.

API Reference

Every endpoint, with an interactive playground.

Python SDK

pip install agentline-ai

Node SDK

Not on npm yet. Use REST.

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What you can build

  • AI phone agents that answer and place real calls.
  • Outbound dialers for sales, follow-ups, and reminders.
  • AI receptionists that answer calls and can transfer the caller to the owner’s phone.
  • Inbound SMS that your agent can read from its number.

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How it works

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

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FAQ

How do I get a phone number for my AI agent? Sign up at agentline.cloud, provision a US 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? The same US number handles outbound calls, inbound voice, and inbound 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? US numbers are $2.00/month per number. Voice calls are $0.10/minute in both directions. A 0-second call is free. A connected call has a one-minute minimum, then the actual duration, rounded up to the cent. No monthly platform fees. How do agents connect over MCP? Point an MCP client at https://api.agentline.cloud/mcp with mcp-remote and a Bearer key.