How It Works Pricing OpenClaw FAQ Fund Your Agent
Now live on OpenClaw

Phone Calls
for AI Agents

Give any OpenClaw agent the power to make real phone calls. Half the price of ElevenLabs — LLM costs included. Powered by Gemini Live.

Fund Your Agent — $1 to start View API Docs
Powered by Twilio Gemini Live Voice 50% cheaper than ElevenLabs Rate Limited & Secure
architecture 
┌──────────────┐     ┌──────────────────┐     ┌──────────────┐
│  Any Agent   │────▶│  PhoneBooth API  │────▶│    Twilio    │
│  (OpenClaw)  │     │  (FastAPI)       │     │ (800 number) │
└──────────────┘     └────────┬─────────┘     └──────┬───────┘
                              │                       │
                     ┌────────▼─────────┐     ┌──────▼───────┐
                     │   Gemini Live    │◀───▶│  Phone call  │
                     │   (Voice AI)     │     │  recipient   │
                     └──────────────────┘     └──────────────┘

Three steps. Your agent is on the phone.

From install to first call in under five minutes.

1

Install the Skill

One command adds phone capability to any OpenClaw agent via ClawHub.

$ clawhub install phonebooth
2

Fund Your Agent

Your agent gets a unique fund_url at registration. Share it with a human to pay by card, or send USDC to the agent's deposit address.

# Pay by card (human opens fund_url)
phonebooth.callwall.ai/fund?tok=...

# Or send USDC on Base
$ send 1 USDC to 0x...deposit_address
3

Agent Makes Calls

Your agent calls any phone number worldwide. Real-time AI voice conversations powered by Gemini Live.

POST /v1/calls
{ "to": "+14155551234",
  "purpose": "Schedule a meeting" }

Half the price of ElevenLabs

LLM costs included. No subscriptions. No minimums. Pay only when your agent talks.

US & Canada

$0.07
per minute

Domestic calls to any US or Canadian phone number.

Global

International

from $0.09
per minute

Call any phone number worldwide. Rates vary by destination.

Premium Lines

$0.20
per minute

Toll-free and premium numbers where applicable.

Start with just $1
~14 minutes of US calls

LLM costs included — ElevenLabs charges voice + LLM separately. We don't.
Also accepts USDC on Base directly to your agent's wallet.

Built for OpenClaw

Install the skill, register your agent, and start making calls. Full API access from day one.

Register your agent

terminal 
$ curl -X POST https://phonebooth.callwall.ai/v1/auth/register \
  -H "Content-Type: application/json" \
  -d '{
    "agent_name": "MyAgent",
    "agent_platform": "openclaw"
  }'

# Response:
{
  "api_key": "pb_live_sk_...",
  "agent_id": "agent_7x9k2m",
  "fund_url": "https://phonebooth.callwall.ai/fund?tok=...",
  "deposit_address": "0x1234...5678"
}

Make a phone call

terminal 
$ curl -X POST https://phonebooth.callwall.ai/v1/calls \
  -H "Authorization: Bearer pb_live_sk_..." \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+14155551234",
    "purpose": "Ask about business hours",
    "caller_name": "Research Assistant"
  }'

# Response:
{
  "call_id": "call_xyz789",
  "status": "initiated",
  "estimated_cost": "$0.07/min"
}

API Keys Hashed

Never stored in plaintext. Industry-standard security.

Rate Limited

Per-agent rate limits to prevent abuse and runaway costs.

Global Reach

Call any phone number worldwide via Twilio's network.

AI Voice

Real-time voice conversations powered by Gemini Live.

View on ClawHub

Fund your agent's phone wallet

Paste the fund token your agent gave you, pick an amount, and pay with card. Credits appear instantly.

Your agent receives this token at registration. Paste it here or use the link your agent gave you.

After payment, your agent will call this number to say hello.

$1 = ~14 minutes of US calls

Secure payment via Stripe. Also accepts USDC on Base.

Frequently Asked Questions

PhoneBooth is an OpenClaw skill and API service that lets AI agents place outbound phone calls to any phone number worldwide. Calls are powered by Twilio for telephony and Gemini Live for real-time AI voice conversation.

You pre-fund your agent's wallet. Credits are deducted per minute when your agent makes calls. You can fund with fiat (credit card via Stripe) or send USDC directly to your agent's wallet address on Base. There are no subscriptions or monthly fees.

PhoneBooth uses Google's Gemini Live for real-time AI voice conversations. The voice sounds natural and can handle complex multi-turn dialogue, ask follow-up questions, and respond to unexpected topics fluidly.

Yes. API keys are hashed and never stored in plaintext. All calls are rate-limited per agent. Phone numbers are validated in E.164 format. The receive wallet has no outbound send capability exposed to agents. Twilio handles STIR/SHAKEN compliance for caller ID.

Not yet — inbound calls are on our roadmap along with conference calls, SMS, call scheduling, and custom voice clones. For now, PhoneBooth supports outbound calls only.

PhoneBooth can call any phone number that Twilio's global network reaches — which covers virtually every country. US and Canada rates start at $0.07/min. International from $0.09/min. LLM costs included.

Your agent deserves
a phone number.

Fund it with $1 and let it make its first call.

Fund Your Agent

$1 to start · Pay per minute · No subscriptions