💻 WhatsApp API Code Examples

WhatsApp API Examples — Ready-to-Use Code Snippets

Jump-start your WhatsApp API integration with practical code examples in PHP, Node.js, Python, and JavaScript. Copy, paste, and customize for your project.

Code Examples

Send WhatsApp Messages with Just a Few Lines of Code

Postabi's REST API is language-agnostic. Here are examples showing how to send WhatsApp messages in popular programming languages. All examples use the same API endpoint.

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PHP Example

Use cURL or Guzzle to send messages via Postabi API. Simple integration with any PHP framework.

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Node.js Example

Using Axios or Fetch API to integrate WhatsApp messaging in Node.js applications and Express backends.

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Python Example

Send WhatsApp messages using the Requests library. Perfect for Django, Flask, or automation scripts.

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JavaScript Example

Client-side or server-side JavaScript for WhatsApp API integration in web applications.

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PHP Example

Send Message with PHP (cURL)

// PHP — Send WhatsApp Message
$apiKey = "YOUR_API_KEY";
$data = [
  "to" => "923001234567",
  "message" => "Hello from Postabi!"
];
$ch = curl_init("https://api.postabi.com/v1/messages");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["Authorization: Bearer $apiKey"]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
$result = curl_exec($ch);

Node.js Example

Send Message with Node.js

// Node.js with Axios
const axios = require('axios');
axios.post('https://api.postabi.com/v1/messages', {
  to: '923001234567',
  message: 'Hello from Postabi!'
}, { headers: { Authorization: `Bearer ${apiKey}` } });

More Languages

Python & JavaScript Code Examples

Python + Requests

Python Example

import requests
headers = {"Authorization": f"Bearer {api_key}"}
data = {"to": "923001234567", "message": "Hello from Postabi!"}
r = requests.post("https://api.postabi.com/v1/messages", json=data, headers=headers)

JavaScript + Fetch

JavaScript Example

fetch("https://api.postabi.com/v1/messages", {method:"POST", headers:{"Authorization": Bearer ${apiKey}, "Content-Type":"application/json"}, body: JSON.stringify({to:"923001234567", message:"Hello from Postabi!"})})

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FAQs

Examples FAQs

Do you provide example projects or starter repos?

Yes, subscribed customers get access to example GitHub repositories with full starter projects in PHP, Node.js, and Python including webhook handling.

Can I test the API without a subscription?

API access requires an active subscription. However, we offer a demo environment where you can test API calls with sample responses.

Is there a Postman collection available?

Yes, we provide a complete Postman collection with all API endpoints pre-configured. Request it via WhatsApp and we'll share the link.

WhatsApp API Examples — Ready-to-Use Code Snippets

Send WhatsApp Messages with Just a Few Lines of Code

Send Message with PHP (cURL)

Send Message with Node.js

Python & JavaScript Code Examples

Python Example

JavaScript Example

Examples FAQs

Start Coding with Postabi API