WhatsApp API
for Developers

Send and receive WhatsApp messages through a simple REST API. Built for developers who need reliable messaging at scale.

3-day free trial for new users. No credit card charged during trial.

Trusted by developers building on WhatsApp

StartupsAgenciesSaaS TeamsE-commerceHealthcareFintech

Everything you need to build on WhatsApp

A complete platform for developers who need reliable WhatsApp messaging at scale.

Full Messaging API

Send and receive text, images, videos, audio, and documents through a clean REST API.

Smart Warming Module

Automatically adjusts message pacing based on session maturity for optimal deliverability.

Real-time Webhooks

Get instant notifications for message delivery, read receipts, and session events.

Enterprise Security

End-to-end encryption, HMAC-signed webhooks, and SOC 2-ready infrastructure.

Intelligent Rate Limiting

Platform-wide adaptive pacing ensures optimal delivery without you managing quotas.

MCP Server for AI Agents

Connect AI agents directly to WhatsApp via the Model Context Protocol.

Send a message in
one API call

No complex setup. Just a simple REST API. Use it raw or with our official SDKs for TypeScript, Python, .NET, and PHP.

cURL
curl -X POST https://wazen.dev/api/v1/sessions/{id}/messages \
  -H "Authorization: Bearer wz_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+1234567890",
    "type": "text",
    "content": "Hello from Wazen!"
  }'
How we compare

The smart choice for WhatsApp API

Same capabilities. Better features. Transparent pricing.

Wazen
Maytapi
Starting Price
$4.99/mo
$24/mo per phone
Sessions
1–10
1 per plan
Smart Warming
MCP Server
Rate Limiting
Smart adaptive
Webhooks
Group API
Setup Time
2 minutes
5 minutes
Wazen
WASenderApi
Starting Price
$4.99/mo
$6/mo
Sessions
1–10
1–10
Smart Warming
MCP Server
Rate Limiting
Smart adaptive
Webhooks
Group API
Limited
Setup Time
2 minutes
5 minutes

All competitor pricing and features are based on publicly available information as of March 2026. All trademarks belong to their respective owners. Wazen is not affiliated with any of the listed providers.

3-day free trial for new users

Simple, transparent pricing

No hidden fees. No message caps. Just reliable messaging.

Starter

$49/yr
  • 1 WhatsApp session
  • Full REST API
  • Group & Channel API
  • MCP server access
Most Popular

Pro

$149/yr
  • 3 WhatsApp sessions
  • Full REST API
  • Group & Channel API
  • MCP server access

Business

$349/yr
  • 10 WhatsApp sessions
  • Full REST API
  • Group & Channel API
  • MCP server access

Frequently asked questions

Wazen provides a REST API that connects to WhatsApp through dedicated numbers. You send API requests, and we handle the WhatsApp communication. Messages are delivered with smart pacing for optimal deliverability.
We recommend using dedicated numbers for best results. You can connect any WhatsApp-enabled phone number through our QR code pairing process.
Our warming module automatically adjusts message pacing based on session maturity. New numbers are gradually ramped up over 14 days for optimal deliverability. This is included free on all plans.
No hard message caps. Our intelligent rate limiting works invisibly to ensure optimal delivery. You focus on building, we handle the pacing.
New users get a 3-day free trial on all plans. No credit card charged during the trial period.
The MCP server lets AI agents interact with WhatsApp directly through the Model Context Protocol. Available on all plans.

Ready to start building?

Get your API key in minutes. Start sending WhatsApp messages today.