WhatsApp Business API Documentation

Connect your application to WhatsApp using Leniia's enterprise-ready WhatsApp Business API.

Getting Started

Leniia's WhatsApp Business API provides two simple methods for developers: REST endpoints and SDK integration. Before you begin, you must:

Have a registered WhatsApp Business API account
Generate an API key in your Leniia dashboard
Ensure your app complies with WhatsApp policy requirements

Authentication

Authentication Headers


Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

Replace YOUR_API_KEY with your Leniia-provided API token.

Endpoints

Send Message

Send text messages to WhatsApp contacts

POST /whatsapp/v1/messages

Request Body

{
  "to": "+1234567890",
  "text": "Hi there! This is a test message."
}

Message Status

Check delivery status of sent messages

GET /whatsapp/v1/message/status?message_id=123456

Response Example

{
  "message_id": "123456",
  "status": "delivered",
  "timestamp": "2025-09-22T10:34:22Z"
}

Code Examples

Python Example


import requests

URL = 'https://api.leniia.com/whatsapp/v1/messages'
HEADERS = {
    'Authorization': 'Bearer your_api_token',
    'Content-Type': 'application/json'
}
DATA = {
    'to': '+12345678901',
    'text': 'Test message'
}

response = requests.post(URL, json=DATA, headers=HEADERS)
print(response.json())

Security & Compliance

Encryption

All requests use TLS 1.3 encryption with 256-bit AES for data in transit.

Rate Limiting

Free tier: 10,000 messages/month. Enterprise tiers available with higher limits.