The User Layer abstracts away multi-chain complexity and enables users to interact with Prime Vaults through a unified, gas-efficient interface.
Cross-Chain Aggregators
Act as a routing infrastructure that transfers user assets from the origin chain to the destination chain where the vault resides. They provide seamless cross-chain execution, swap-and-bridge flows, and asset normalization.
User SmartAccount (EIP-4337)
Serves as the user’s execution endpoint on the destination chain.
The SmartAccount:
Receives cross-chain assets
Executes deposit, withdrawal or claim rewards calls
Interacts directly with the Teller of each StakingVault
Operates gaslessly via Prime Paymaster sponsorship
This layer ensures frictionless onboarding, unified routing, and consistent cross-chain UX.
Prime PayMaster
A dedicated gas-sponsorship module that enables fully gasless interactions for users. The Paymaster covers execution fees for all SmartAccount operations, including deposits, withdrawals, and reward claims
