Modules are the building blocks of modular wallets. Built on smart contract accounts (SCAs), they extend the business logic of Web3 applications. Each module provides a solution component for a new use case. You can enable specific modules in your app to meet specific business needs, such as automated transactions, subscription billing, or event-triggered actions when integrated with Circle Contracts. This makes USDC more programmable and enhances its role as a medium of exchange.
Note: Modules are built on Circle's modular smart contract accounts (MSCA) technology and support the following standards:
You can also create custom modules to expand the ecosystem based on this standard.
The table below lists the modules that are either available or planned for future support:
| Module Name | Description | Module Address |
|---|---|---|
| Address Book | Only allows you to transfer assets to a list of allowlisted addresses that is enforced onchain. Useful if you are building a vault for your treasury. • Add a list of address you allow sending ERC20, 721 or 1155 assets too • Any transfers of these assets outside that list of address will fail onchain | ✅ Available: MSCA version: circle_6900_v1 Mainnet address: 0x0000000d81083B16EA76dfab46B0315B0eDBF3d0 Testnet address: 0x0000000d81083B16EA76dfab46B0315B0eDBF3d0 |
