# Payment integration by PG

- [Payment gateways](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways.md): Learn how to integrate with each PG.
- [NHH KCP](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/nhh-kcp.md): NHN KCP payment window integration guide
- [KG INICIS](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/inicis.md): KG INICIS payment window integration guide
- [Toss Payments](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/toss.md): Toss Payments payment window integration guide
- [NICE Payments](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/nice.md): NICE Payments payment window integration guideNICE
- [KICC](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/kicc.md): KICC payment window integration guide
- [Daou (PAYJOA)](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/daou-payjoa.md): Daou payment window integration guide
- [Precautions for using PAYJOA](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/daou-payjoa/precautions-for-using-payjoa.md)
- [KG Mobilians](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/kg-mobilians.md): KG Mobilians payment window integration guide
- [Paymentwall](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/paymentwall.md): Paymentwall payment window integration guide
- [Danal](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/danal.md): Danal payment window integration guide
- [Settlebank](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/settlebank.md): Settlebank payment window integration guide
- [JTNET](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/jtnet.md): JTNet payment window integration guide
- [Smartro](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/smartro.md): Smartro payment window integration guide
- [PayPal](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/paypal.md): PayPal payment window integration guide
- [Eximbay](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/eximbay.md): Eximbay payment window integration guide
- [Blue Walnut](https://portone.gitbook.io/docs-en/payment-integration-by-pg/payment-gateways/blue-walnut.md): Blue Walnut payment window integration guide
- [Simple payments](https://portone.gitbook.io/docs-en/payment-integration-by-pg/simple.md): Learn how to integrate simple payments.
- [Naver Pay (Standard)](https://portone.gitbook.io/docs-en/payment-integration-by-pg/simple/naver-pay-standard.md): Naver Pay simple payment integration guide
- [Kakao Pay](https://portone.gitbook.io/docs-en/payment-integration-by-pg/simple/kakao-pay.md): Kakao Pay simple payment integration guide
- [PAYCO](https://portone.gitbook.io/docs-en/payment-integration-by-pg/simple/payco.md): PAYCO simple payment integration guide
- [Alipay](https://portone.gitbook.io/docs-en/payment-integration-by-pg/simple/alipay.md): Alipay simple payment integration guide
- [Toss](https://portone.gitbook.io/docs-en/payment-integration-by-pg/simple/toss.md): Toss simple payment integration guide


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://portone.gitbook.io/docs-en/payment-integration-by-pg.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.