How to integrate MPESA API to node js application

M-Pesa is a popular mobile payment service in Kenya that allows users to transfer money and make payments using their mobile phones. If you have a website and you want to integrate M-Pesa into it, you can use Node.js to create a server-side application that interacts with the M-Pesa API.

Here are the steps you can follow to integrate M-Pesa into your website using Node.js: First, you will need to sign up for a M-Pesa account and obtain the necessary API credentials, including your consumer key and consumer secret. Next, you will need to install the M-Pesa node module, which provides an easy-to-use interface for interacting with the M-Pesa API. You can do this by running the following command:

npm install mpesa

After the module has been installed, you can require it in your Node.js script using the following code:

let mpesa = require('mpesa');

Before you can make any API requests, you will need to initialize the M-Pesa module with your API credentials. You can do this using the following code:

var options = {
    consumerKey: 'YOUR_CONSUMER_KEY',
    consumerSecret: 'YOUR_CONSUMER_SECRET'
};

mpesa.init(options);

Once the M-Pesa module has been initialized, you can start making API requests. For example, if you want to initiate a payment request, you can use the initiatePayment() method, like this:

mpesa.initiatePayment({
    amount: 100, // the amount to be paid, in Kenyan shillings
    phoneNumber: '2547XXXXXXXX', // the phone number of the customer
    reference: 'Payment for product XYZ' // a reference for the transaction
}, function (error, response) {
    // handle the response or error here
});

You can also use the checkTransactionStatus() method to check the status of a transaction using its transaction ID:

mpesa.checkTransactionStatus('TRANSACTION_ID', function (error, response) {
    // handle the response or error here
});

By following these steps, you can easily integrate M-Pesa into your website using Node.js and the M-Pesa node module. This will allow your customers to easily make payments using their mobile phones, and you can use the M-Pesa API to manage the transactions and check their status.