AgentLine — AI Phone API | Phone Numbers, Voice & SMS for AI Agents
NEW$2.20 free credit on every signup — enough for your first test call
Supporting US + Canada numbersUSCA<br>Phone Numberfor yourOpenClaw<br>Give your AI agent a real phone number. Make calls, SMS, and handle inbound conversations — all through one Skill.<br>Get Started For Free
or tell your AI
PromptMCP
Get yourself a phone number and call me. Follow https://agentline.cloud/skill.md<br>Paste into Claude Code, Cursor, Hermes, OpenClaw, or any AI agent.
See it in Action<br>AgentLine handles the raw audio streams and transcribes them in real-time, sending clean JSON to your agent's webhook.
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Prompt-to-Call Setup Flow<br>Instruct your agent to get a number and place an outbound call to you. Experience real-time bidirectional conversation.
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Use cases<br>2FA receiving inbound SMSOutbound sales callsInbound customer supportOutbound feedback collectionPersonal assistant to talk
2FA and verification inbox for autonomous agents2FA & Verification Inbox Listening<br>Stripe<br>2m ago<br>729 304Your Stripe verification code is 729 304. It expires in 10 minutes.
GitHub<br>5m ago<br>482 910Someone tried to sign in to your GitHub account from Chrome. Code: 482 910
Sales / lead follow-upOutbound Sales Agent Live Call<br>David Lead<br>00:12<br>AI: "Hi, is this David?"
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Inbound customer supportInbound Support Queue Active Call
00:42<br>"Hey, my API webhook is returning a 500 error on inbound calls. How can I fix this?"
Outbound feedback collectionFeedback Collection Agent Analyzing<br>Sarah (Customer)00:18
"Hi Sarah! How would you rate your experience setting up AgentLine on a scale of 1 to 5?"
Personal assistant conversationPersonal voice assistant Active Assistant<br>"Can you reschedule my 3 PM sync and call my manager Sarah to tell her?"<br>Assistant|
Dialing Sarah (Manager)...
Install in 30 Seconds<br>One file gives your AI agent full telephony powers.<br>https://agentline.cloud/skill.md<br>Copy Skill URL Download<br>1. Download the skill file above<br>2. Add it to your AI agent (Claude Code, Cursor, OpenClaw, etc.)<br>3. Set your AGENTLINE_API_KEY<br>4. Say "call +1234567890" — your agent can now make calls!
Frequently Asked Questions
What countries are supported?
How does voice calling work?
What's the difference from Twilio?
Can I use my existing phone number?
How do I handle incoming calls?
Latest from the Blog<br>Guides, tutorials, and insights on AI phone agents and telephony automation.<br>What You Can Build When Your AI Agent Has a Phone Number<br>2026-05-08 · 8 min read<br>The Complete Guide to AI Agent Voice Calling in 2026<br>2026-05-12 · 7 min read<br>Why OpenClaw Users Are Choosing AgentLine for Voice<br>2026-05-15 · 7 min read
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