Messaging API forDevelopers
Powerful REST API to send messages, manage contacts, and automate WhatsApp messaging workflows at scale.Multiple languages • Full documentation • Reliable uptime
Try Our API
Interactive code samples in your favorite programming language
# Send a text message
curl -X POST https://zautic.com/api/v1/messages/send \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"phone": "+919876543210",
"message": "Hello from Zautic! 🚀"
}'
# Send an image with caption
curl -X POST https://zautic.com/api/v1/messages/send \
-H "X-API-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"phone": "+919876543210",
"media_type": "image",
"media_url": "https://example.com/image.jpg",
"caption": "Check out this image!"
}'Use your API Key (starts with zap_live_/zap_test_) in the X-API-Key header. The API Secret is not required for API calls (webhooks/signatures only).
Built for Developers
Everything you need to integrate WhatsApp into your application
API Key Authentication
Secure your API requests with unique API keys. Rate limiting included.
Real-time Webhooks
Receive instant notifications for message delivery, status updates, and incoming messages
Enterprise Security
HTTPS encryption, IP whitelisting, and audit logs for compliance
High Performance
Built for high-throughput messaging with reliable uptime
OpenAPI Spec
Full OpenAPI 3.0 documentation with Postman collection
Detailed Documentation
Code examples in 8 languages with interactive API explorer
Get Started in Minutes
Send your first message in 3 simple steps
Ready to Start Building?
Get your free API key today and start sending WhatsApp messages in minutes