published

Twilio Communications API

The Twilio Communications API enables developers to integrate voice, SMS, and video capabilities into applications, streamlining communication solutions for businesses.

Developed by Twilio

View Source
99.99%Uptime
250msLatency
3kStars
API KeyAuth
NoCredit Card
RESTStyle
2025-07Version
API Endpoints

Reference for available routes, request structures, and live examples.

Sends SMS messages globally

Full Endpoint URL
https://api.twilio.com/Messages.json
Implementation Example
curl -X POST 'https://api.twilio.com/Messages.json' \
  -H 'Authorization: Bearer YOUR_API_KEY'
Request Payload
{
  "To": "+15551234567",
  "Body": "Your verification code is 123456",
  "From": "+15557654321"
}
Expected Response
{
  "sid": "SMabcdef1234567890",
  "status": "queued",
  "date_created": "2023-07-18T16:00:00Z"
}
Version:2025-07
Limit:1 SMS/second
Real-World Applications
  • SMS-based two-factor authentication (2FA)Optimized Capability
  • Automated voice call notificationsOptimized Capability
  • Appointment and delivery remindersOptimized Capability
  • Multi-user video chat in applicationsOptimized Capability
  • Customer support chatbots and IVROptimized Capability
  • Global transactional and marketing messagingOptimized Capability
Advantages
  • ✓ Extensive and clear API documentation
  • ✓ Global carrier reach and high deliverability
  • ✓ Wide language and SDK support
  • ✓ Highly reliable with 99.99% uptime
  • ✓ Scalable for both startups and enterprises
Limitations
  • ✗ Freemium tier has limited usage
  • ✗ SMS deliverability may vary by country/regulation
  • ✗ Not all advanced features available in all regions
  • ✗ Requires credit card for access to some services
  • ✗ Per-message costs can add up at scale

FAQs

API Specifications

2025-07
Pricing Model
Freemium (pay-as-you-go, volume discounts for enterprise)
Credit Card
Not Required
Response Formats
JSON, XML
Supported Languages
7 Languages
SDK Support
Python, Node.js, Java, C#, Ruby, PHP, Go
Time to Hello World

Under 30 minutes for basic setup and sending your first SMS or call

Rate Limit

Up to 100 requests/sec (varies by endpoint and plan)

Free Tier Usage

Free trial includes $15.50 credit; limited to a set number of SMS and voice minutes with trial numbers. No charge for trial account setup.

Use Case: Best For

Developers and businesses needing global messaging, voice, or video integration with fast setup and high reliability.

Not Recommended For

Very high volume, ultra-low latency use cases requiring deep customization at the carrier level.

Resources

Documentation Official Website Source Code Pricing Details Postman Collection
#video#voice#sms

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