# SUNBAY Docs

> This file provides a structured overview of the documentation for Large Language Models (LLMs).
> You can use the URLs below to fetch specific documentation pages when users ask questions.
> Each entry includes the page title, optional description, and direct URL.

A comprehensive payment technology platform that connects merchants with users. We provide enterprise-grade payment solutions from zero-code integration to full-scale implementations, helping businesses quickly launch payment services, focus on innovation, and accelerate growth.

## Documentation

- [SUNBAY Developer Documentation](https://docs.sunbay.dev/en/): SUNBAY Payment Gateway Platform Developer Documentation, including Quick Start, API Reference, SDK Guides and Best Practices
- [Products](https://docs.sunbay.dev/en/docs/products): SUNBAY payment products overview, including in-person payments, online payments, and management tools
- [Get Started](https://docs.sunbay.dev/en/docs/getting-started): Experience SUNBAY payments in 5 minutes through cloud API integration
- [Development Process](https://docs.sunbay.dev/en/docs/integration/development-process/overview): Complete development and go-live process, from environment preparation to production release
- [Pre-Development Preparation](https://docs.sunbay.dev/en/docs/integration/development-process/environment-setup): Obtain developer account, create payment application, configure test parameters and other pre-development preparation work
- [Sandbox Environment Testing](https://docs.sunbay.dev/en/docs/integration/development-process/sandbox-testing): Conduct development debugging and API authorization testing in sandbox environment to ensure functionality is normal
- [Production Environment Configuration](https://docs.sunbay.dev/en/docs/integration/development-process/production-preparation): Configure production environment parameters, complete merchant onboarding, set up Webhook and other production environment preparation work
- [Go-Live](https://docs.sunbay.dev/en/docs/integration/development-process/go-live): Application release, gradual rollout, monitoring and alerting and other go-live processes and precautions
- [Accelerate Development with AI IDEs](https://docs.sunbay.dev/en/docs/integration/ai-ide-guide): Guide to quickly generate SUNBAY API integration code using AI IDEs like Cursor
- [In-person](https://docs.sunbay.dev/en/docs/integration/in-person/overview): Integration guides for face-to-face payment scenarios at stores and counters
- [Solution Overview](https://docs.sunbay.dev/en/docs/integration/in-person/tapro-semi-integration/architecture): Tapro semi-integration solution architecture design, providing payment access capabilities through Taplink SDK and Nexus API
- [Local Integration](https://docs.sunbay.dev/en/docs/integration/in-person/tapro-semi-integration/terminal-integration): Tapro local integration solution, implementing local communication between POS application and payment terminal through Taplink SDK
- [Cloud Integration](https://docs.sunbay.dev/en/docs/integration/in-person/tapro-semi-integration/cloud-integration): Tapro cloud integration solution, implementing cloud interaction between backend server and payment platform through Nexus API
- [Online](https://docs.sunbay.dev/en/docs/integration/online/overview): SUNBAY integration for websites and apps—Hosted Payment Page, API Only, and payment-method guides
- [Overview](https://docs.sunbay.dev/en/docs/integration/online/hosted-checkout): Hosted Payment Page (HPP)—SUNBAY hosts the payment UI; you create a session, redirect, and handle notifications
- [Overview](https://docs.sunbay.dev/en/docs/integration/online/api-only): API Only—integrate digital wallets on your own pages, send encrypted payloads to SUNBAY direct payment; status, Webhook, and security
- [Google Pay™ integration](https://docs.sunbay.dev/en/docs/integration/online/google-pay): SUNBAY Google Pay™—card brands, auth methods, 3DS notes, Hosted Payment Page vs API Only
- [Webhook](https://docs.sunbay.dev/en/docs/integration/webhook): Receive asynchronous notifications for transaction results
- [Taplink SDK for Android](https://docs.sunbay.dev/en/sdk/client-side/android): SUNBAY Taplink SDK for Android POS applications, enabling quick integration of payment terminal capabilities with support for multiple connection modes
- [.NET SDK (C#)](https://docs.sunbay.dev/en/sdk/client-side/dotnet): SUNBAY Nexus client-side .NET SDK guide for payment integration in client applications
- [Java SDK](https://docs.sunbay.dev/en/sdk/server-side/java): Official SUNBAY Nexus Java SDK guide, providing complete payment integration capabilities for Java 8+ applications
- [Node.js SDK](https://docs.sunbay.dev/en/sdk/server-side/nodejs): Official SUNBAY Nexus Node.js SDK guide, supporting TypeScript and JavaScript applications
- [Go SDK](https://docs.sunbay.dev/en/sdk/server-side/go): Official SUNBAY Nexus Go SDK guide, providing clean payment integration capabilities for Go applications
- [.NET SDK (C#)](https://docs.sunbay.dev/en/sdk/server-side/dotnet): Official SUNBAY Nexus .NET SDK guide, providing complete payment integration capabilities for .NET applications
- [Python SDK](https://docs.sunbay.dev/en/sdk/server-side/python): Official SUNBAY Nexus Python SDK guide, providing clean and professional payment integration capabilities for Python applications
- [PHP SDK](https://docs.sunbay.dev/en/sdk/server-side/php): Official SUNBAY Nexus PHP SDK guide, providing complete payment integration capabilities for PHP applications
- [Overview](https://docs.sunbay.dev/en/refspec/overview): This document defines the unified OpenAPI specification for SUNBAY Nexus, covering interface standards, protocols, and integration processes.
- [Sale Transaction](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/sale): API documentation for creating sale transactions, supporting multiple payment methods including swipe, insert, tap, and scan
- [Auth](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/auth): Pre-authorization transaction API documentation for freezing funds in cardholder's account
- [Forced Auth](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/forced-auth): Forced pre-authorization API documentation for pre-authorization operations in offline scenarios
- [Incremental Auth](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/incremental-auth): Incremental authorization API documentation for increasing authorization amount on existing pre-authorization
- [Post Auth](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/post-auth): Post authorization API documentation for completing pre-authorization transaction and capturing funds
- [Refund](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/refund): Transaction refund API documentation for refunding completed transactions
- [Void](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/void): Transaction void API documentation for voiding authorized but uncompleted transactions
- [Abort](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/abort): Transaction abort API documentation for aborting ongoing transaction processes
- [Tip Adjust](https://docs.sunbay.dev/en/refspec/in-person/semi-integration/tip-adjust): Tip adjustment API documentation for adjusting tip amount of completed transactions
- [Create checkout session](https://docs.sunbay.dev/en/refspec/online/checkout/checkout-api-integration): API reference for creating a Hosted Payment Page session
- [Direct payment](https://docs.sunbay.dev/en/refspec/online/direct-payment): Direct payment API for Google Pay, Apple Pay, and other digital wallets (encrypted wallet payloads), without creating a Hosted Payment Page session first
- [Transaction Query](https://docs.sunbay.dev/en/refspec/query/query-transaction): Transaction Query API documentation for querying transaction status and detailed information
- [Batch Query](https://docs.sunbay.dev/en/refspec/settlement/batch-query): Batch settlement query API documentation for querying settlement status and details of transaction batches
- [Batch Close](https://docs.sunbay.dev/en/refspec/settlement/batch-close): Batch settlement API documentation for batch closing and settling transaction batches
- [Sandbox Environment Overview](https://docs.sunbay.dev/en/resources/sandbox/overview): Introduction to SUNBAY sandbox environment, an independent testing environment for development debugging and feature verification
- [Test Scenarios](https://docs.sunbay.dev/en/resources/sandbox/test-scenarios): Sandbox environment test scenario description, simulating different transaction results through specific test amounts
- [Transaction Status](https://docs.sunbay.dev/en/resources/reference/transaction-status): Transaction status enumeration reference, including pending, processing, success, failure, and other status definitions
- [Transaction Type](https://docs.sunbay.dev/en/resources/reference/transaction-type): Transaction type enumeration reference, including sale, authorization, refund, and other transaction type definitions
- [Payment Method Category](https://docs.sunbay.dev/en/resources/reference/payment-method-category): Payment method category enumeration reference, used to classify payment methods
- [Payment Method](https://docs.sunbay.dev/en/resources/reference/payment-method): Payment method enumeration reference, including card payment, QR code payment, and other main payment method definitions
- [Sub Payment Method](https://docs.sunbay.dev/en/resources/reference/sub-payment-method): Sub payment method enumeration reference, including specific payment channel and method definitions
- [Card Network Type](https://docs.sunbay.dev/en/resources/reference/card-network-type): Card network type enumeration reference, including Visa, Mastercard, UnionPay, and other card organization types
- [Entry Mode](https://docs.sunbay.dev/en/resources/reference/entry-mode): Card entry mode enumeration reference, including swipe, insert, tap, and other entry mode definitions
- [Authentication Method](https://docs.sunbay.dev/en/resources/reference/authentication-method): Authentication method enumeration reference, including password, signature, no password, and other authentication method definitions
- [Currency Codes](https://docs.sunbay.dev/en/resources/reference/currency-codes): Currency code enumeration reference, supports ISO 4217 standard currency codes
- [Error Codes](https://docs.sunbay.dev/en/resources/reference/error-codes): API error code reference documentation, containing definitions, meanings, and handling suggestions for all error codes
- [Transaction Result Code](https://docs.sunbay.dev/en/resources/reference/transaction-result-code): Transaction result code enumeration reference, used to identify specific results of transaction processing
- [Integration Best Practices](https://docs.sunbay.dev/en/resources/best-practices/integration): Key considerations for merchants integrating SUNBAY API, including best practices for using official SDKs, error handling, idempotency, and more
- [Security Best Practices](https://docs.sunbay.dev/en/resources/best-practices/security): Payment system security integration best practices, including data encryption, key management, secure transmission, and other security measures
- [Performance Optimization](https://docs.sunbay.dev/en/resources/best-practices/performance): Payment system performance optimization best practices, including interface call optimization, concurrent processing, timeout settings, and other performance improvement solutions
- [Account & Authentication](https://docs.sunbay.dev/en/resources/faq/account-authentication): This page summarizes frequently asked questions about account management and API authentication.
- [Integration Issues](https://docs.sunbay.dev/en/resources/faq/integration-issues): This page summarizes common issues when integrating SUNBAY payment system.
- [Payment Issues](https://docs.sunbay.dev/en/resources/faq/payment-issues): This page summarizes frequently asked questions related to payment transactions.
- [Refund Issues](https://docs.sunbay.dev/en/resources/faq/refund-issues): Frequently asked questions about refunds, including refund process, refund status, refund failure handling, and other issues
- [Payment Terms](https://docs.sunbay.dev/en/resources/glossary/payment-terms): Explanation of commonly used terms in the payment industry
- [Technical Terms](https://docs.sunbay.dev/en/resources/glossary/technical-terms): Explanation of technical development related terms
- [Compliance Terms](https://docs.sunbay.dev/en/resources/glossary/compliance-terms): Explanation of payment industry compliance related terms
- [Changelog](https://docs.sunbay.dev/en/resources/changelog): SUNBAY Developer Documentation update history

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