Payjn(IDN) - Interface doc
    Payjn(IDN) - Interface doc
    • Integration Guide
    • Signature Rules
    • Attachment Code Table
    • Collection
      • Initiate Collection (API)
        POST
      • Initiate Collection (H5 Cashier)
        POST
      • Query Collection Order
        POST
      • Query Available Payment Methods
        POST
    • Payout
      • Initiate Payout
        POST
      • Query Payout Order
        POST
    • Account
      • Query account balance
        POST
    • Callback Notification
      • Collection callback notification
      • Payout callback notification
    • Schemas
      • 示例数据模型
        • Tag

    Integration Guide

    english document
    中文文档

    Request HOST#

    https://api.payjn.com

    Payjn Outbound IP#

    47.236.5.135

    Communication Protocol#

    Description
    Transmission MethodTo ensure transaction security, data is transmitted via HTTPS protocol. The required TLS version must not be lower than 1.2.
    Submission MethodData is submitted using the POST method.
    Data FormatBoth request and response data use the application/json format.
    Character EncodingUTF-8 character encoding is used uniformly.
    Signature AlgorithmSHA256WithRSA, followed by base64 encoding.
    Processing LogicWhen processing transaction data, first check the business response, then determine the transaction status for further processing.

    Configure IP Whitelist and Public Key#

    Merchant Backend → Account Management → Account Information → API Parameter Information
    Modified at 2025-06-29 16:00:44
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    Signature Rules