WA-Connect API

Self-hosted WhatsApp Web API for cPanel

Send messages, manage sessions, and integrate WhatsApp into your applications

Overview

Base URL

https://your-domain.com/api/v1

Response Format

All API responses follow this format:

// Success Response
{
    "success": true,
    "data": { ... },
    "message": "Optional success message"
}

// Error Response
{
    "success": false,
    "message": "Error description",
    "error": "Detailed error message"
}

Authentication

All API requests (except health check) require the X-API-Key header:

X-API-Key: your-api-key-here

API keys can be created from the Settings > API Keys page in the dashboard.

Example Request

curl -X POST https://your-domain.com/api/v1/messages/send-text \
  -H "Content-Type: application/json" \
  -H "X-API-Key: your-api-key-here" \
  -d '{"to": "968XXXXXXXX", "message": "Hello!"}'

Session Management

GET /api/v1/health No Auth Required

Check if the API server is running.

Response

{
    "success": true,
    "message": "WA-Connect API is running",
    "timestamp": "2026-02-27T10:00:00.000Z"
}

GET /api/v1/session/status

Get current WhatsApp session status.

Response

{
    "success": true,
    "data": {
        "status": "connected",
        "user": {
            "id": "968XXXXXXXX@s.whatsapp.net",
            "name": "Your Name"
        },
        "connected_at": "2026-02-27T10:00:00.000Z"
    }
}

POST /api/v1/session/connect

Start WhatsApp connection. Returns QR code if not authenticated.

Response (QR Code needed)

{
    "success": true,
    "data": {
        "status": "qr_ready",
        "qr": "2@ABC123...base64-qr-data..."
    }
}

Response (Already authenticated)

{
    "success": true,
    "data": {
        "status": "connecting",
        "message": "Reconnecting with saved credentials"
    }
}

POST /api/v1/session/disconnect

Disconnect WhatsApp session (keeps credentials for reconnection).

Response

{
    "success": true,
    "message": "Disconnected successfully"
}

POST /api/v1/session/logout

Logout from WhatsApp and clear all session data.

Response

{
    "success": true,
    "message": "Logged out successfully"
}

Messages

POST /api/v1/messages/send-text

Send a text message to a WhatsApp number.

Request Body

{
    "to": "968XXXXXXXX",
    "message": "Hello from WA-Connect!"
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent",
        "timestamp": "2026-02-27T10:00:00.000Z"
    }
}

POST /api/v1/messages/send-image

Send an image with optional caption.

Request Body

{
    "to": "968XXXXXXXX",
    "imageUrl": "https://example.com/image.jpg",
    "caption": "Check this out!"  // optional
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent"
    }
}

POST /api/v1/messages/send-document

Send a document/file.

Request Body

{
    "to": "968XXXXXXXX",
    "documentUrl": "https://example.com/document.pdf",
    "mimetype": "application/pdf",
    "fileName": "Invoice.pdf",
    "caption": "Here is your invoice"  // optional
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent"
    }
}

POST /api/v1/messages/send-video

Send a video with optional caption.

Request Body

{
    "to": "968XXXXXXXX",
    "videoUrl": "https://example.com/video.mp4",
    "caption": "Watch this!"  // optional
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent"
    }
}

POST /api/v1/messages/send-audio

Send an audio file or voice note.

Request Body

{
    "to": "968XXXXXXXX",
    "audioUrl": "https://example.com/audio.mp3",
    "ptt": false  // set to true for voice note
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent"
    }
}

POST /api/v1/messages/send-location

Send a location pin.

Request Body

{
    "to": "968XXXXXXXX",
    "latitude": 23.5880,
    "longitude": 58.3829,
    "name": "Muscat, Oman",       // optional
    "address": "Muscat, Oman"     // optional
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent"
    }
}

POST /api/v1/messages/send-contact

Send a contact card (vCard).

Request Body

{
    "to": "968XXXXXXXX",
    "contactName": "John Doe",
    "contactPhone": "+96899999999"
}

Response

{
    "success": true,
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "status": "sent"
    }
}

POST /api/v1/messages/send-bulk

Send the same message to multiple recipients.

Request Body

{
    "recipients": ["968XXXXXXXX", "968YYYYYYYY", "968ZZZZZZZZ"],
    "message": "Hello everyone!",
    "delay": 1000  // optional, delay between messages in ms (default: 1000)
}

Response

{
    "success": true,
    "data": {
        "total": 3,
        "successful": 3,
        "failed": 0,
        "results": [
            { "to": "968XXXXXXXX", "success": true, "message_id": "3EB0XXX" },
            { "to": "968YYYYYYYY", "success": true, "message_id": "3EB0YYY" },
            { "to": "968ZZZZZZZZ", "success": true, "message_id": "3EB0ZZZ" }
        ]
    }
}

Message Log

GET /api/v1/messages/log

Get paginated message history.

Query Parameters

Parameter	Type	Default	Description
`page`	integer	1	Page number
`limit`	integer	20	Items per page
`direction`	string	all	Filter: inbound, outbound, or all

Response

{
    "success": true,
    "data": {
        "messages": [
            {
                "id": 1,
                "message_id": "3EB0XXXXX",
                "remote_jid": "968XXXXXXXX@s.whatsapp.net",
                "remote_name": "John Doe",
                "direction": "outbound",
                "message_type": "text",
                "content": "Hello!",
                "status": "sent",
                "created_at": "2026-02-27T10:00:00.000Z"
            }
        ],
        "pagination": {
            "page": 1,
            "limit": 20,
            "total": 150,
            "totalPages": 8
        }
    }
}

GET /api/v1/messages/:id

Get a single message by ID or message_id.

Response

{
    "success": true,
    "data": {
        "id": 1,
        "message_id": "3EB0XXXXX",
        "remote_jid": "968XXXXXXXX@s.whatsapp.net",
        "remote_name": "John Doe",
        "direction": "outbound",
        "message_type": "text",
        "content": "Hello!",
        "status": "sent",
        "created_at": "2026-02-27T10:00:00.000Z"
    }
}

Error Handling

HTTP Status Codes

Code	Description
`200`	Success
`400`	Bad Request - Missing or invalid parameters
`401`	Unauthorized - Invalid or missing API key
`403`	Forbidden - API key lacks required permission
`404`	Not Found - Resource not found
`429`	Too Many Requests - Rate limit exceeded
`500`	Internal Server Error
`503`	Service Unavailable - WhatsApp not connected

Error Response Example

{
    "success": false,
    "message": "WhatsApp is not connected",
    "error": "Service unavailable"
}

Rate Limits

API requests are rate-limited to prevent abuse:

Endpoint Type	Limit
General API	100 requests per 15 minutes
Message Sending	30 messages per minute
API Key Daily Limit	Configurable per key (default: 1000)

When rate limit is exceeded, you'll receive a 429 Too Many Requests response. Wait before retrying.

Webhooks

Overview

Webhooks allow your application to receive real-time notifications when events occur in WA-Connect. When an event is triggered, WA-Connect sends an HTTP POST request to your configured URL.

Event Types

Event	Description
`message.received`	A new message was received
`message.sent`	A message was sent successfully
`message.status`	Message delivery status updated (delivered, read)
`connection.connected`	WhatsApp session connected
`connection.disconnected`	WhatsApp session disconnected
`connection.qr_ready`	QR code is ready for scanning
`call.incoming`	Incoming call received
`call.rejected`	Incoming call was rejected

Webhook Payload Format

All webhook requests are sent as HTTP POST with JSON body:

{
    "event": "message.received",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        // Event-specific data
    }
}

Request Headers

Header	Description
`Content-Type`	application/json
`User-Agent`	WA-Connect-Webhook/1.0
`X-Webhook-Event`	The event type
`X-Webhook-Timestamp`	Event timestamp (ISO 8601)
`X-Webhook-Signature`	HMAC-SHA256 signature (if secret configured)
`X-Webhook-Signature-256`	sha256=SIGNATURE (GitHub-style format)

Signature Verification

If you configure a secret for your webhook, WA-Connect signs every request using HMAC-SHA256. You should verify this signature to ensure the request is authentic.

Verification Example (Node.js)

const crypto = require('crypto');

function verifySignature(payload, signature, secret) {
    const expected = crypto
        .createHmac('sha256', secret)
        .update(JSON.stringify(payload))
        .digest('hex');

    return crypto.timingSafeEqual(
        Buffer.from(signature),
        Buffer.from(expected)
    );
}

// In your webhook handler:
app.post('/webhook', (req, res) => {
    const signature = req.headers['x-webhook-signature'];
    const isValid = verifySignature(req.body, signature, 'your-secret');

    if (!isValid) {
        return res.status(401).send('Invalid signature');
    }

    // Process the webhook...
    res.status(200).send('OK');
});

EVENT message.received

Triggered when a new message is received.

Payload

{
    "event": "message.received",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        "message_id": "3EB0XXXXX",
        "from": "968XXXXXXXX@s.whatsapp.net",
        "from_name": "John Doe",
        "type": "text",
        "content": "Hello!",
        "media_url": null,
        "is_group": false,
        "timestamp": "2026-02-27T10:00:00.000Z"
    }
}

EVENT message.sent

Triggered when a message is sent successfully.

Payload

{
    "event": "message.sent",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        "message_id": "3EB0XXXXX",
        "to": "968XXXXXXXX@s.whatsapp.net",
        "type": "text",
        "content": "Hello!",
        "status": "sent"
    }
}

EVENT message.status

Triggered when message delivery status is updated.

Payload

{
    "event": "message.status",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        "message_id": "3EB0XXXXX",
        "remote_jid": "968XXXXXXXX@s.whatsapp.net",
        "status": "delivered"  // "sent", "delivered", "read", "failed"
    }
}

EVENT connection.connected

Triggered when WhatsApp session is connected.

Payload

{
    "event": "connection.connected",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        "status": "connected",
        "phone_number": "968XXXXXXXX",
        "wa_name": "Your Name"
    }
}

EVENT connection.disconnected

Triggered when WhatsApp session is disconnected.

Payload

{
    "event": "connection.disconnected",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        "status": "disconnected",
        "reason": "logout"
    }
}

EVENT call.incoming

Triggered when an incoming call is received.

Payload

{
    "event": "call.incoming",
    "timestamp": "2026-02-27T10:00:00.000Z",
    "data": {
        "from": "968XXXXXXXX@s.whatsapp.net",
        "call_id": "CALL_ID_HERE",
        "is_video": false
    }
}

Retry Logic

If your webhook endpoint returns a non-2xx status code or times out, WA-Connect will retry the delivery:

Default retry attempts: 3 (configurable per webhook)
Retry delay: 30 seconds between attempts
Timeout: 30 seconds per request

Your endpoint should respond with HTTP 200 within 30 seconds to acknowledge receipt.

Contacts

POST /api/v1/contacts/check

Check if a phone number is registered on WhatsApp.

Request Body

{
    "phone": "968XXXXXXXX"
}

Response (Number on WhatsApp)

{
    "success": true,
    "exists": true,
    "message": "Number is on WhatsApp",
    "contact": {
        "jid": "968XXXXXXXX@s.whatsapp.net",
        "phone": "968XXXXXXXX",
        "name": "John Doe"
    }
}

Response (Number NOT on WhatsApp)

{
    "success": true,
    "exists": false,
    "message": "Number is not on WhatsApp"
}

GET /api/v1/contacts

Get list of synced contacts.

Query Parameters

Parameter	Type	Default	Description
`page`	integer	1	Page number
`limit`	integer	50	Items per page
`search`	string	-	Search by name or phone
`type`	string	all	Filter: individual, group, or all

Response

{
    "success": true,
    "data": {
        "contacts": [
            {
                "id": 1,
                "jid": "968XXXXXXXX@s.whatsapp.net",
                "phone": "968XXXXXXXX",
                "push_name": "John Doe",
                "is_group": false,
                "last_message_at": "2026-02-27T10:00:00.000Z"
            }
        ],
        "pagination": {
            "page": 1,
            "limit": 50,
            "total": 150,
            "totalPages": 3
        }
    }
}

GET /api/v1/contacts/:jid

Get a single contact by JID.

Response

{
    "success": true,
    "data": {
        "id": 1,
        "jid": "968XXXXXXXX@s.whatsapp.net",
        "phone": "968XXXXXXXX",
        "push_name": "John Doe",
        "is_group": false,
        "message_count": 25,
        "last_message_at": "2026-02-27T10:00:00.000Z",
        "created_at": "2026-02-20T08:00:00.000Z"
    }
}

GET /api/v1/contacts/search

Search contacts by name or phone number.

Query Parameters

Parameter	Type	Description
`q`	string	Search query (minimum 2 characters)

Response

{
    "success": true,
    "data": {
        "contacts": [
            {
                "id": 1,
                "jid": "968XXXXXXXX@s.whatsapp.net",
                "phone": "968XXXXXXXX",
                "push_name": "John Doe"
            }
        ]
    }
}

GET /api/v1/contacts/export

Export all contacts as CSV file.

Response

Returns a CSV file download with columns: jid, phone, name, is_group, message_count, last_message_at

POST /api/v1/contacts/sync

Trigger a manual contact sync from WhatsApp. Note: Contacts are synced automatically when WhatsApp connects.

Response

{
    "success": true,
    "message": "Contacts are synced automatically when WhatsApp connects."
}

Group Contacts

Group chats are also stored as contacts with is_group: true. You can filter them using the type parameter:

GET /api/v1/contacts?type=group