> ## Documentation Index > Fetch the complete documentation index at: https://docs.openxswitch.com/llms.txt > Use this file to discover all available pages before exploring further. # Wallet-as-a-Service Overview > Wallet-as-a-Service (WaaS) is an infrastructure layer that allows you to create, manage, and operate blockchain wallets programmatically through APIs without handling private key management or blockchain infrastructure directly. It provides a unified wallet system for managing balances, transactions, and operations across multiple blockchain networks. ### What You Can Do With Wallet-as-a-Service APIs, you can: * Create and manage **wallets** and **sub-wallets** * Generate deposit addresses across supported chains * Process deposits, withdrawals, and internal transfers * Execute internal transfers between wallets and sub-wallets * Perform **instant swaps** across `240+` supported assets and` 500+` **trading pairs** * Track balances and transaction states in real time * Automate fund collection and treasury operations * Integrate webhooks for real-time event updates ## Key Concepts ### Wallets & Sub-Wallets Each wallet represents a managed account that can hold multiple assets across supported blockchains. Sub-wallets enable structured fund segregation under a single organization. ### Recharge Currency A digital asset used to fund wallets or sub-wallets. Users can deposit cryptocurrencies like Bitcoin, Ethereum, or stablecoins to maintain liquidity and enable transactions within the platform. πŸ‘ You can only deposit and withdraw using a recharge currency or coin. ### WalletAsset A WalletAsset is a unified representation of a cryptocurrency or token in a multi-chain wallet system. It aggregates balances of the same asset across different blockchains, allowing users to deposit on one chain and withdraw on another seamlessly. #### Why WalletAsset Matters? * **Cross-Chain Balance Aggregation** – Instead of treating assets separately by chain, a WalletAsset combines them into a single view. * **Flexible Withdrawals** – Users can receive an asset on one chain and send it out on another, making transactions more efficient. * **Simplified User Experience** – Users don’t have to track different versions of the same token across multiple chains. ### Internal Transfer Internal transfers allow movement of funds between wallets and sub-wallets within the OpenXSwitch ecosystem without requiring onchain settlement. These transfers are processed off-chain for speed and efficiency. ### Instant Swap Instant Swap enables real-time conversion of supported assets within Wallet-as-a-Service without requiring external exchanges or manual onchain swaps. Swaps are executed off-chain through liquidity infrastructure and reflected instantly in wallet balances via event updates. ### Multi-Chain Support Wallet-as-a-Service supports multiple blockchain networks with unified balance abstraction across supported assets. ### Event-Driven Architecture All wallet operations emit webhook events, allowing you to track deposits, withdrawals, transfers, and balance updates in real time. ### Environment Support Wallet-as-a-Service supports two environments: * **Sandbox** - simulation environment for development and testing (API only) * **Live** - production environment with real assets and real transactions ### Balance & State Handling Wallet balances should always be treated as **event-driven state updates** using webhook payloads as the source of truth. ### Security & Access All API requests are authenticated using API keys, with optional additional security layers for sensitive operations such as transfers and withdrawals. It provides a unified wallet system for managing balances, transactions, and operations across multiple blockchain networks. ### What You Can Do With Wallet-as-a-Service APIs, you can: * Create and manage **wallets** and **sub-wallets** * Generate deposit addresses across supported chains * Process deposits, withdrawals, and internal transfers * Execute internal transfers between wallets and sub-wallets * Perform **instant swaps** across `240+` supported assets and` 500+` **trading pairs** * Track balances and transaction states in real time * Automate fund collection and treasury operations * Integrate webhooks for real-time event updates ## Key Concepts ### Wallets & Sub-Wallets Each wallet represents a managed account that can hold multiple assets across supported blockchains. Sub-wallets enable structured fund segregation under a single organization. ### Recharge Currency A digital asset used to fund wallets or sub-wallets. Users can deposit cryptocurrencies like Bitcoin, Ethereum, or stablecoins to maintain liquidity and enable transactions within the platform. πŸ‘ You can only deposit and withdraw using a recharge currency or coin. ### WalletAsset A WalletAsset is a unified representation of a cryptocurrency or token in a multi-chain wallet system. It aggregates balances of the same asset across different blockchains, allowing users to deposit on one chain and withdraw on another seamlessly. #### Why WalletAsset Matters? * **Cross-Chain Balance Aggregation** – Instead of treating assets separately by chain, a WalletAsset combines them into a single view. * **Flexible Withdrawals** – Users can receive an asset on one chain and send it out on another, making transactions more efficient. * **Simplified User Experience** – Users don’t have to track different versions of the same token across multiple chains. ### Internal Transfer Internal transfers allow movement of funds between wallets and sub-wallets within the OpenXSwitch ecosystem without requiring onchain settlement. These transfers are processed off-chain for speed and efficiency. ### Instant Swap Instant Swap enables real-time conversion of supported assets within Wallet-as-a-Service without requiring external exchanges or manual onchain swaps. Swaps are executed off-chain through liquidity infrastructure and reflected instantly in wallet balances via event updates. ### Multi-Chain Support Wallet-as-a-Service supports multiple blockchain networks with unified balance abstraction across supported assets. ### Event-Driven Architecture All wallet operations emit webhook events, allowing you to track deposits, withdrawals, transfers, and balance updates in real time. ### Environment Support Wallet-as-a-Service supports two environments: * **Sandbox** - simulation environment for development and testing (API only) * **Live** - production environment with real assets and real transactions ### Balance & State Handling Wallet balances should always be treated as **event-driven state updates** using webhook payloads as the source of truth. ### Security & Access All API requests are authenticated using API keys, with optional additional security layers for sensitive operations such as transfers and withdrawals.