Voice Calls
Agents can make and receive voice calls. Full duplex, low latency, programmable.
Phone Numbers for
AI Agents
Get a real number, receive the SMS, extract the code, make a phone call. All in one API.
Works with MCP. Claude, Cursor, Windsurf, Hermes, OpenClaw.
How It Works
Three steps. Zero friction.
01
Get a number
Provision a real phone number in seconds via API. Choose country, type, and capabilities.
02
Connect your agent
Point your agent to the number with one API key. No human dashboard required.
03
Receive everything
Calls, SMS, and verification codes delivered instantly to your webhook endpoint. Fully async.
AI Voice Calls
Pick a voice. Make a call.
Your agent calls a real phone number, speaks with the AI voice you choose, and returns a full transcript. Click to preview each voice.
Marin
NewSoft & Natural
Light, friendly tone that sounds like a real person on the line.
Best for: Receptionist, support, conversational
Live preview only
Cedar
NewWarm & Grounded
Even, thoughtful cadence with a hint of warmth.
Best for: Advisory, healthcare, trust-building
Live preview only
Shimmer
Bright & Energetic
Long-running default. Upbeat and enthusiastic, great first impression.
Best for: Sales, outreach, receptionist
Sage
Calm & Authoritative
Steady, reassuring, and knowledgeable.
Best for: Healthcare, finance
Ash
Warm & Conversational
Friendly tone that puts people at ease.
Best for: Customer service
Ballad
Expressive & Melodic
Dynamic range with natural inflection.
Best for: Engaging conversations
Coral
Clear & Professional
Crisp, business-appropriate delivery.
Best for: B2B calls
Echo
Resonant & Deep
Authoritative presence with depth.
Best for: Formal inquiries
Verse
Smooth & Articulate
Polished and refined delivery.
Best for: Executive communication
Alloy
Neutral & Balanced
Clean, clear, works for any scenario.
Best for: General purpose
Features
Everything an agent needs to communicate
Use Cases
Powering every type of agent
From browser automation to customer service, AgentCall enables any agent to communicate via phone.
sms.waitForOTP()
verify.example.com
Verify your phone
Enter the code sent to your number
+1 (567) 290-1611
5
8
3
0
1
6
numbers.provision({ type: 'local' })
AgentCall
Entered number in verification form
Browser
sms.waitForOTP(numberId)
AgentCall
OTP extracted: 583016
AgentCall
The Killer Feature
Automate your own SMS verification testing
Run end-to-end QA on your SaaS verification flows. Your test fills out your own signup form, AgentCall receives the SMS, extracts the 6-digit code, and returns it. All in one async call. Perfect for CI/CD pipelines, dev/staging environments, and agent-to-agent messaging.
- Verification codes auto-extracted from any SMS format
- waitForOTP() returns the code in one call
- Works via SDK, REST API, or MCP tool
Note: AgentCall numbers are VoIP-routed, so consumer platforms that block VoIP for signup (Stripe, Google, WhatsApp, banks, etc.) won't accept them. For those, you'll need a SIM-backed number from a different service.
Read the blog// 1. Provision a number
const num = await ac.numbers.provision({
country: 'US', type: 'local'
})
// 2. Your agent enters the number on a form...
// 3. Wait for the OTP
const otp = await ac.sms.waitForOTP(num.id, {
timeout: 30000
})
console.log(otp) // "583016"
// 4. Agent enters the code — verified.Built for agents
| AgentCall | Traditional VoIP | Enterprise Telecom | |
|---|---|---|---|
| Voice Calls | |||
| AI Voice Calls | |||
| Inbound AI Voice (incoming calls answered autonomously) | |||
| SMS Send & Receive | |||
| Auto-Reads Verification Codes | |||
| End-to-End SMS Verification Testing | |||
| MCP Server: Works Inside Claude, Cursor & Windsurf (21 Skills) | |||
| Separate Number Per Agent | |||
| Built for AI Agents | |||
| Usage-Based Pricing |
Customer Stories
Loved by AI agent builders
“I asked Claude for voice agents — I was so frustrated with how technical setting up Twilio was, I figured someone smarter than me must've built an agent-first alternative.”
L
Lucas
AgentCall Pro customer
Pricing
Simple pricing that scales with your agents
Free
$0
For experimentation and prototyping
Fully free within limits. Card required to unlock provisioning, never charged on Free tier.
- 1 US local phone number (included, $0)
- 10 SMS / month
- 5 voice minutes
- 5 inbound AI voice minutes (no card required)
- Post-call email summaries (caller, intent, urgency)
- 5 code extractions / month
- Email support
Most Popular
Pro
$19.99/ month
Plus usage. No per-seat fees.
- Unlimited numbers, all types: local, toll-free, mobile (from $2/mo each)
- SMS at $0.015 / message
- Voice at $0.035 / minute
- AI voice calls at $0.40 / minute
- Inbound AI voice at $0.40 / minute (no monthly cap)
- Post-call email summaries with caller, intent, and urgency
- Call recording at $0.01 / minute
- Unlimited code extractions
- Priority email support
Resources
From the blog
Why AI Agents Need Phone Numbers
What an agent-first phone API looks like, and why it matters for AI receptionists, outbound campaigns, and agent-to-agent communication.
Read more →AgentCall on Smithery
Our hosted MCP server is now listed on Smithery, the largest MCP marketplace. Drop a 6-line config into Claude Desktop, Cursor, or Windsurf and you're done.
Read more →5 Best Phone APIs for Developers Compared
AgentCall vs Twilio vs Telnyx vs Vonage vs Plivo. Which phone API is right for your project?
Read more →Get started in seconds
Add AgentCall to your agent, no matter how it's built.
Get StartedNo Node.js required. Just URL + API key
{
"mcpServers": {
"agentcall": {
"transport": "streamable-http",
"url": "https://api.agentcall.co/mcp",
"headers": { "Authorization": "Bearer YOUR_KEY" }
}
}
}Prefer plain REST? REST API Quickstart with curl examples →