Integration Guide
Copy for LLM
Copy page as Markdown for LLMs
View as Markdown
Open this page as Markdown
Open in ChatGPT
Get insights from ChatGPT
Open in Claude
Get insights from Claude
Connect to Cursor
Install MCP server on Cursor
Connect to VS Code
Install MCP server on VS Code

💡 Tip: Please follow the checklist below to ensure you have completed the full payment integration with PayKKa.

Setting Up Your Sandbox Environment

Create Sandbox Account

Visit Sandbox Login Page
Follow the prompts to complete account login or registration

Complete Identity Verification and Merchant Onboarding

Click on KYC -> Identity Verification, fill in the content and submit. No review is required to proceed to the next step Add Merchant.
Go to the merchant list page, click Add Merchant
Contact integration personnel for quick review and activation of required payment methods
Click the avatar in the top right -> Profile -> Security Settings -> Payment Password (Used for refund verification, please keep it safe)

Configure Transaction Keys

💡 Hint: No configuration is required for platform-based customer access, you must contact PayKKa support for more details.

Click the avatar in the top right -> Settings -> Permissions & Security -> Transaction Keys
Click the Set button, click Add Transaction Key (will require payment password input), generate a new public-private key pair

🔑 Transaction Keys

Used for Open Platform API call identity and security authentication
Please keep your private key secure to prevent leakage; PayKKa will not persist your private key
Supports up to 2 key pairs simultaneously, can be manually rotated if needed to ensure transaction security

🔒 PayKKa Public Key

Used for Open Platform API response and webhook request security authentication
Must be kept secure to prevent leakage

Integration

Basic Preparation

Build your application and integrate corresponding payment products based on business needs
Ensure you can handle specific detailed scenarios after integration to maintain payment interaction flow and data consistency

Test Scenarios

Recommended scenarios to verify:

Error or rejection handling
3DS authentication flow
Local wallet display and redirect handling
Webhook notification reception and response handling
Refund and dispute handling
Statement and report generation

Transaction Verification

Please provide your outbound IP address as an IP whitelist before proceeding

Sandbox API Address

https://openapi-sandbox.paykka.com

Signature Calculation

Process requests and responses according to the authentication flow in API Authentication.

API Integration

Integrate required interfaces according to the API documentation in API Reference, and process based on response content.

Test Cards

# Visa
4242424242424242

# Mastercard
5555555555554444

# Discover
6011111111111117

# Diners Club
3056930009020004

# JCB
3566002020360505

# 3D Card
4000000000003220

# 3D Card Rejection
4000008400001629

# Insufficient Funds Rejection
4000000000009995

Production Preparation