Complete API Reference
Build powerful WhatsApp integrations with our REST API. Interactive docs with live examples in multiple languages.
https://zautic.com/api/v1# Send a WhatsApp 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 API!"
}'Quick Start Guide
Follow these simple steps to integrate WhatsApp messaging into your application
Authenticate with X-API-Key
Include your API key in the X-API-Key header on every request. Keep it server-side, rotate regularly, and never expose it in public frontends.
Important: Use the API Key value (starts with zap_live_ or zap_test_) for authentication. The API Secret is for webhook/signature features and should not be pasted into API request headers.
Also supported: Authorization: Bearer YOUR_API_KEY (same API key value).
Request Basics
https://zautic.com/api/v1X-API-Key: YOUR_API_KEY
Content-Type: application/jsoncurl -X GET https://zautic.com/api/v1/account \
-H "X-API-Key: YOUR_API_KEY"Powerful API Features
Everything you need to build world-class WhatsApp integrations
Messaging API
Send text, media, templates, and track delivery
POST /v1/messages/sendGET /v1/messagesGET /v1/messages/{id}Contact Management
Manage your contacts and groups programmatically
GET /v1/contactsPOST /v1/contactsGET /v1/contacts/{id}Device Management
List connected WhatsApp devices and their status
GET /v1/devicesWallet & Billing
Get credit balance and transactions
GET /v1/walletGET /v1/wallet/transactionsWebhooks
Real-time callbacks for delivery, inbound messages, and device status
Events: message.sent / delivered / readEvents: message.receivedSigned (HMAC SHA256)Complete API Reference
Explore all endpoints with live examples and instant testing
Always up to date
This reference is generated from our OpenAPI spec and reflects the latest endpoints under /api/v1.
For production apps, make API calls from your server and keep your API key private.
GET https://zautic.com/api/openapi?v=6Tools & Downloads
Everything you need to build faster
OpenAPI Spec (JSON)
Public OpenAPI 3.1 spec used by the interactive reference
Guides (Quick Links)
Start fast with the essentials and common workflows
API Reference
Complete endpoint documentation with examples
SDKs & Postman (Dashboard)
Generate SDKs and export Postman collections (sign in required)
Need Help Getting Started?
Our developer support team is here to help you integrate successfully