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Twilio SMS

Communications

Send and receive SMS, MMS, and WhatsApp messages

Twilio's messaging API lets you send SMS, MMS, and WhatsApp messages globally. Used by millions of developers for OTPs, alerts, and marketing.

Details

Auth Type
API Key (Account SID + Auth Token)
Rate Limit
100 msg/s
Pricing
$0.0079 per SMS (US)
Full Docs
Step 1: Save your provider key

This is NOT your Callio key. Enter the API key from the provider's dashboard (e.g. OpenAI/SendGrid).

API Key (Account SID + Auth Token)

1. Go to https://console.twilio.com 2. Find your Account SID and Auth Token 3. Use them as credentials in the playground

Get API Credentials

Getting Started

1

Try It Instantly

Click "Try It" above to test the API in the playground

2

Add to Your Agent

Click "Add to Agent" to get your API key and integrate

Common Use Cases

OTP / two-factor auth
Transactional alerts
Marketing campaigns
WhatsApp messaging
Phone number lookup

💻 Code Examples

Get started quickly with these code examples in your favorite language

curl -X GET \
  'https://www.callio.dev/api/proxy/twilio-sms/endpoint' \
  -H 'Authorization: Bearer YOUR_CALLIO_KEY' \
  -H 'Content-Type: application/json'

💡 Tip: Replace YOUR_CALLIO_KEY with your actual Callio API key from the dashboard.

Ready to integrate Twilio SMS?

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