Introduction Payment methods in the digital world are diversifying day by day. Paycell is a reliable platform developed by Turkcell that offers various payment solutions for both individual users and businesses. Thanks to Paycell payment integration, you can receive fast and secure payments through your website, mobile application, or physical store.

In this article, we will explain in detail how to integrate the Paycell payment system. Throughout the article, we will cover Paycell API usage, sample codes, and scenarios step by step.

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1. What is Paycell API? Paycell API offers businesses the opportunity to integrate functions such as receiving payments, querying balances, QR code payments, and bill collection into their systems. With the API, you can accept credit card, Paycell balance, or QR code payments from your website or application.

Main API Services:

Payment (Payment API)
QR Payment (QR Payment API)
Bill Payment (Bill Payment API)
Card Storage (Card Storage API)
User Authentication (Authentication API)

2. How to Integrate Paycell API?

Step 1: Paycell API Account Opening To work with Paycell, you must first have a Paycell membership and a developer account. After opening an account, API keys (API Key and Secret Key) are provided to you.

Step 2: API Access and Test Environment In the first stage, Paycell provides you with a Sandbox (test) environment. In this environment, you can perform all payments virtually and test your system.

Step 3: Configuring API Calls For each API call;

You generate a JWT token using your API key.
You make calls using the HTTPS POST method.

Step 4: Payment Initialization A payment initialization request is sent with the information received from the customer. Credit card information, amount, and user information are sent here.

Sample Payment Initialization JSON:

{
  "merchantCode": "123456",
  "referenceNumber": "ABC123XYZ",
  "amount": 1000,
  "currency": "TRY",
  "paymentMethod": "CARD",
  "cardInfo": {
    "cardNumber": "5528790000000008",
    "expireMonth": "12",
    "expireYear": "24",
    "cvc": "000"
  },
  "redirectUrl": "https://www.yourwebsite.com/payment-result"
}

Step 5: Callback/Notification Handling After the customer makes a payment, Paycell sends a POST request to your system. This request contains information about whether the payment was successful or unsuccessful.

Callback Sample Content:

{
  "status": "SUCCESS",
  "referenceNumber": "ABC123XYZ",
  "amount": 1000,
  "currency": "TRY"
}

Step 6: Payment Finalization After receiving the callback, you can complete the order in your database and show the customer a success message.

3. Special Scenarios: Paycell QR and Mobile Payment

By generating a QR code, the customer can make payments in a physical environment.
You can receive one-click payments with Paycell Wallet integration in mobile applications.

QR Code Payment Example:

QR code data is retrieved from the API.
The QR code is displayed on the web/mobile environment.
The customer makes a payment by scanning the code with the Paycell application.

4. Most Important Precautions to Take with Paycell API

Make all calls with HTTPS.
Check the JWT Token in incoming notifications.
Store user information by encrypting it appropriately.
Do not switch to the Live environment without completing tests in the Sandbox environment.

Conclusion: Why is Paycell Integration Important?

Fast Payment: Offers a one-step payment experience.
Security: Turkcell infrastructure and two-factor authentication systems are used.
Flexibility: Offers various payment alternatives such as QR, card, mobile wallet.
Installment Payment: You can offer installment options to your customers.

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Frequently Asked Questions (FAQ)

Q: Which cards are valid with Paycell? Answer: Supports Visa, Mastercard and Troy cards.

Q: Can I receive international payments with Paycell? Answer: Currently, payments are only received within Turkey.

Q: Does the Sandbox environment work with real money? Answer: No, transactions made in the Sandbox environment are purely for testing purposes.

Q: What are the Paycell commission rates? Answer: It may vary depending on your agreement and business volume. You can contact Paycell for details.

Final Word: With the Paycell API, you can strengthen your digital payment infrastructure and offer both your customers and your business a modern payment experience.

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