# KakaoPay Online Payment API

**Canonical:** https://apis.io/apis/kakaopay/kakaopay-online-payment-api/  
**Provider:** KakaoPay — https://apis.io/providers/kakaopay/  
**Base URL:** https://open-api.kakaopay.com  
**Documentation:** https://developers.kakaopay.com/docs/payment/online-payment/single-payment

KakaoPay Online Payment API is one of 4 APIs that [KakaoPay](https://apis.io/providers/kakaopay/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Online Payment, Single Payment, Subscription, and Payment Cancellation. The published artifact set on APIs.io includes API documentation.

REST API for integrating KakaoPay online payment functionality into PC and mobile web or app environments. Supports single payments, subscription (recurring) billing, order inquiry, and payment cancellation. Uses admin key authentication via Authorization header.

## Machine-readable artifacts (2)

- **Documentation** — https://developers.kakaopay.com/docs/payment/online-payment/single-payment
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/kakaopay/refs/heads/main/apis.yml

## Other KakaoPay APIs (3)

- [KakaoPay Login API](https://apis.io/apis/kakaopay/kakaopay-login-api/)
- [KakaoPay Money Transfer API](https://apis.io/apis/kakaopay/kakaopay-money-transfer-api/)
- [KakaoPay Face Recognition API](https://apis.io/apis/kakaopay/kakaopay-face-recognition-api/)

## Tags

Online Payment, Single Payment, Subscription, Payment Cancellation

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/kakaopay/kakaopay-online-payment-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/kakaopay/.