Developer Services

APIs for Modern Communications

Build powerful voice and messaging applications with our developer-friendly APIs and SDKs. Try the live examples below.

Voice API
Messaging API
Number Management
Official SDKs

Voice API

Build programmable voice applications with call control, IVR, recording, and real-time transcription across 180+ countries.

Programmable call control
Interactive Voice Response (IVR)
Call recording and storage
Real-time transcription
Conference calling
Call analytics and CDRs

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outbound-call.js

1import { AlfaCall } from '@alfacall/sdk';
2 
3const client = new AlfaCall({ apiKey: process.env.ALFACALL_API_KEY });
4 
5// Place an outbound call with an IVR menu
6const call = await client.calls.create({
7  to: '+14155550142',
8  from: '+18005550199',
9  answerUrl: 'https://your-app.com/ivr',
10  record: true,
11  machineDetection: 'enable',
12});
13 
14console.log('Call SID:', call.sid);
15console.log('Status:', call.status);

output

// Press "Run" to execute this example

Messaging API

Send and receive SMS, MMS, and WhatsApp messages globally with delivery tracking, templates, and webhooks.

SMS and MMS support
Two-way messaging
Delivery webhooks
Message templates
Shortcode support
Unicode and concatenation

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send-sms.js

1import { AlfaCall } from '@alfacall/sdk';
2 
3const client = new AlfaCall({ apiKey: process.env.ALFACALL_API_KEY });
4 
5// Send a transactional SMS with a delivery webhook
6const message = await client.messages.create({
7  to: '+14155550142',
8  from: 'ALFACALL',
9  body: 'Your verification code is 480913',
10  statusCallback: 'https://your-app.com/sms/status',
11});
12 
13console.log('Message ID:', message.id);
14console.log('Segments:', message.segments);

output

// Press "Run" to execute this example

Number Management

Search, provision, and manage local, mobile, and toll-free numbers programmatically across 100+ countries.

Number search and filtering
Instant provisioning
Number configuration
Porting management
Regulatory compliance
Number lifecycle management

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buy-number.js

1import { AlfaCall } from '@alfacall/sdk';
2 
3const client = new AlfaCall({ apiKey: process.env.ALFACALL_API_KEY });
4 
5// Search and instantly provision a local number
6const [available] = await client.numbers.search({
7  country: 'US', type: 'local', areaCode: '212',
8});
9 
10const number = await client.numbers.buy(available);
11 
12console.log('Provisioned:', number.phoneNumber);

output

// Press "Run" to execute this example

Industries We Power

Built for every communication workflow

From OTP delivery to global contact centers, teams across industries build on AlfaCall.

Contact Centers & BPO

Scale inbound and outbound campaigns with least-cost routing, IVR, and real-time CDRs.

Retail & E-commerce

Order confirmations, delivery alerts, and abandoned-cart SMS with global delivery rates.

Healthcare

HIPAA-conscious appointment reminders, secure voice, and two-way patient messaging.

Banking & Fintech

OTP delivery, fraud alerts, and verified caller ID to build customer trust.

Logistics & Mobility

Driver-rider masked calling, dispatch notifications, and proof-of-delivery messaging.

SaaS & Platforms

Embed voice, verification, and notifications into your product with a few API calls.

Official SDKs

Get started quickly with our official libraries for your favorite language.

Node.js

Python

PHP

Ruby

Java

RESTful APIs

Clean, well-documented REST APIs with predictable resource-oriented URLs.

Webhooks

Real-time event notifications for call status, message delivery, and more.

Documentation

Comprehensive guides, tutorials, and API references.

Ready to start building?

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