Nested Safe
Every standard Zyfai Smart Account is a Safe Smart Account deployed by the user's EOA. A Nested Safe follows the same model, but is deployed by another Safe Smart Account rather than an EOA.
This is the foundational infrastructure behind Zyfai's institutional offering: direct, unshared ownership within existing multisig rails, with zero counterparty risk from other users in the system. The model aligns with the traditional Separately Managed Account (SMA) structure used in TradFi.
For Institutions: Multisig-Controlled Agents
Nested Safe eliminates the need for an EOA to deploy a Zyfai Smart Account. Instead, an institution's existing multisig infrastructure holds all deposited capital directly: a critical requirement for compliance, internal governance, and institutional capital allocation.
The result is the operational benefit of automated yield management with transparent, segregated custody.
How the structure works:
- Multisig at the top level: your existing Safe acts as the controlling multisig.
- Agent Smart Account underneath: the Agent operates through a nested Smart Account (Safe7579) that is owned and controlled by your multisig.
- Granular delegation via Session Keys: Session Keys restrict what the Agent can do, which protocols it can access, and which contracts it can call. All parameters are defined and approved by you.
This design ensures that:
- The Agent can rebalance and manage positions efficiently.
- The multisig always remains the ultimate owner and authority.
- No centralized operator, including Zyfai, can unilaterally move funds.
To access your Safe multisig outside of Zyfai, head to our guide: Use Zyfai via Safe Global.