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 |
| Weighted Multisig | Module to add multisig capability into your wallet • Add multiple signatories to an account, with each having a specific weight. • Set a threshold for the account, transactions only process if the weights of the signatories are above a specific threshold. • Supports both ECDSA & Passkey as the signers (for example, set a wallet with three signers - A: 30, B:40, C:60 and a threshold of 60) | Coming soon: version 0.8 of ERC6900 |
| Multi Owner | Add multiple owners to your account, with either of these owners having complete control of the account • Set either an ECDSA signer or a passkey • Set up a recovery address on the wallet | Coming soon: version 0.8 of ERC6900 |
| Session Key | Add custom permissions and sessions to enable pull payments from your account. Enables use cases such as subscriptions, automatic transactions, spending limits etc. • Allow an address to pull an ERC-20 or native token up to an amount over a defined duration (for example, let address A pull 10 USDC every month) | Coming soon: version 0.8 of ERC6900 |
