Choose the API you need
Choose and connect the payment, prepaid, banking and settlement capabilities your service needs.
API
Payment expertise.
Connected by API.
From payments and cancellations to transaction reconciliation and merchant payouts. Our experience building and operating PG systems connects the payment and settlement functions your service needs through APIs.
wiezon API connection
Services you are using
Payments and receipts
Prepaid balances and gifts
Bank accounts and payout services
Transaction/Operation Notification
Function integration for each task
Connect payments.
Manage what comes next.
Authorization, cancellation, transaction verification and settlement form one service flow. Connect the APIs your existing order, customer and merchant systems need, with a review of Korean and international PG integration scope.
Connect to the services you use
Keep your existing member, order and merchant interfaces while exchanging the required transaction and operational data.
Connect partner capabilities
Connect PG, banking, identity verification and messaging services under each provider’s terms.
01
Payments and prepaid balances in your service
Connect payments, cancellations and receipts with prepaid top-ups, spending and gifting.
- Payment/cancellation/payment receipt inquiry
- Customer management, top-ups, refunds and gifts
- Cash receipt issuance/cancellation
Payment/prepaid payments API
Payments and receipts
Customers, prepaid balances and gifts
cash receipt
02
Automate payouts and reconciliation
Connect account verification, transfers and merchant payout data, and reconcile transactions against settlement results.
- Confirm account holder and transfer money to account
- Payout balance lookup and merchant registration
- Reconcile transaction and settlement records
Bank account and payout APIsConfiguration items
Confirmation of account holder and remittance
Payout services and balances
Transaction and settlement reconciliation
Subject to each partner’s contract and integration terms
03
Customer messages and operational alerts
Connect customer transaction messages and operational notifications across the channels you use.
- SMS, LMS, Kakao Alimtalk and email
- Payment app push and Slack notifications
- Verification of business registration number and mobile phone identity verification
Customer/Operation NotificationConfiguration items
SMS, Kakao Alimtalk and email
Push·Slack
Verification of identity and business
Connect the APIs your service needs.
Connect wiezon APIs with partner functions from PG providers, banks and other services. Once the required APIs are identified, we explain specifications, testing procedures, contracts and terms.
Payments and receipts
- Payment/cancellation by payment method
- View payment receipts
- Cash receipt issuance/cancellation
Prepaid/Membership
- Member registration/inquiry/status change
- Prepaid top-ups and refunds
- Prepaid payment/cancellation
- Member transaction history
- Give a gift
Bank accounts and payout services
- Account holder name inquiry
- bank transfer
- Payout service balance lookup
- Merchant registration
- Request for bank transfer
message
- Send SMS/LMS
- Send Kakao Alimtalk messages
- Payment app push notifications
- Send Slack notifications
- Sending mail
Transaction and deposit reconciliation
- Provide transaction details
- Provide settlement details
- Data connection for transaction/deposit comparison
Confirmation, authentication, linkage
- Business registration number validity check
- Mobile phone identity verification
- Open banking linked account work
Your implementation roadmap
We review your business and existing systems, then agree on the scope and schedule.
- 1
Decide which tasks to connect
Review your system configuration, data exchanges and required functions.
- 2
Agree on specifications and responsibilities
Review API availability and partner terms, then agree on authentication, calls and response handling.
- 3
Verify integration
Test successful transactions, cancellations and errors in the development environment before preparing for launch.
Frequently asked questions
Do Korean and international PG providers have the same terms?
Availability and contract terms depend on the PG provider, country, payment methods and settlement structure. Share your intended providers and markets during consultation.
Can I get API documentation and testing environment right away?
Once we confirm the required functions and target systems, we explain specifications and testing procedures. Partner features may also require contracts and test account approval.
Can I use all functions if I just sign up for an API usage contract?
Each API has its own provider and terms. We explain whether payments, transfers, identity verification or messaging require a partner contract or separate usage fees.
Who handles development: wiezon or our team?
We divide responsibilities across your existing interfaces and backend and wiezon’s capabilities. Together, we agree on what your developers will integrate and what wiezon will deliver.
How do you respond to specification changes or failures during operation?
We identify the operator of each API and partner service, then agree on support channels, change notifications and responsibilities in the contract. Share your workflows and support requirements.
Related services
Solutions
We build payment, merchant and settlement systems for PG operators and platforms. Our work for Kurly Pay, Ohouse and Smartro informs our registration preparation and post-launch support.
View solutions Consulting
Prepare registration documentation and the IT environment together, from security reviews to on-site inspections and follow-up requests.
View solutions Cloud
Consolidate payment and settlement records, manage merchants and sales partners, and access PG, prepaid and settlement functions with Cloud.
Discuss your payment and settlement integrations.
Review available functions and integration scope for your selected PG providers, countries, payment methods and settlement structure.