Getting Started

Welcome to the KOMOJU API documentation.

KOMOJU is a Japanese payment gateway which supports all major payment methods in Japan(JPY). We offer a RESTful API and a Hosted Page for easy integrations. We also offer technical support in both English and Japanese to help you get started.

In accordance with Japanese laws and regulations, merchants must be PCI DSS certified in order to store credit card numbers or are required to operate without storing card numbers. At this time, we are not able to provide you with REST API access until verifying your PCI certification status. If you do not plan to become PCI DSS certified, we recommend that you use either our Hosted page or our Multipay options. If you have any questions, please reach out to us via our contact form.

Create an account

Test mode

The purpose of the test mode is to demonstrate all the functionality the live mode provides to aid in integration with the KOMOJU platform. You can create an account and begin testing by signing up. Once you've created an account you can access the test mode using the following URL:

Live mode

Users can apply for live mode access through their account. You will need to provide details about your company, where you plan to use KOMOJU, and which payment methods you would like to use. Once you have been approved we will provide you credentials for a live mode with access to live payments.

For general account enquiries, you can reach us using the KOMOJU contact form.

Payment Methods

Currently we support eight payment methods: Domestic Credit Card, WebMoney, NET CASH, BitCash, Bank transfer, Konbini (Convenience Store), and PayEasy payments.

Domestic Credit Cards

Many Japanese customers run into problems and failed/blocked transactions when trying to purchase from online retailers outside of Japan.

With KOMOJU, we work closely with a Japanese bank to ensure Japanese credit card transactions go through and are processed correctly.

Convenience Store (Konbini)

KOMOJU handles delayed payment options, including Konbini, which is very popular in Japan for its security, anonymity and convenience.

Payments can be made at the following stores:

English Name Japanese Name API Value
Daily Yamazaki デイリーヤマザキ daily-yamazaki
Family Mart ファミリーマート family-mart
Lawson ローソン lawson
Ministop ミニストップ ministop
Seicomart セイコーマート seicomart
7-Eleven セブンイレブン seven-eleven

When the customer pays at the store for a convenience store purchase, they are charged a fixed processing fee which is standard in Japan.

Prepaid Cards

KOMOJU supports various prepaid cards and online wallets. Currently our system supports BitCash, NET CASH and Webmoney. These prepaid cards can be purchased at many stores here in Japan. Prepaid cards are popular for sites relating to games, anime, manga, etc.

Bank Transfer

Bank Transfer is an electronic funds transfer between two bank accounts. This payment option is popular with customers making large payments. Customers can either remit at an ATM or via online banking to complete the payment process.


PayEasy Japan has 7.5 million registered users and is completely seperate from PayEasy international. We work closely with the PayEasy team and they regularly feature our clients in targeted promotions to their user database.

Like Convenience Store payments, the customer is charged a fixed processing fee when they pay for a PayEasy purchase.

Mobile Payments

We support these mobile payments.


Label Japanese Name Logo
Bank Transfer 銀行振込 Create your own image using the Japanese name as text
Convenience Store Payment (Konbini) コンビニ daily-yamazakifamily-martlawsonministopseicomartseven-eleven
Credit Card クレジットカード
PayEasy ペイジー pay-easy
WebMoney ウェブマネー web-money
BitCash ビットキャッシュ bit-cash
Mobile キャリア決済 audocomosoftbank
LINE Pay LINE Pay line-pay
Merpay メルペイ merpay
PayPay PayPay paypay