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Examples

Smart EOAs

Previously, the only way to leverage smart account capabilities (batching, multichain orchestration, gasless experiences, sessions, ...) was to desposit funds from an EOA to a smart account (SCA).

This created a friction point for users and fragmented their liquidity into multiple addresses. For this reason, the growth of the Smart Account solutions has never reached the levels of EOA accounts.

Combining the Best of Both Worlds

The Biconomy Smart EOA solution enables developers to build apps which offer the best of EOA wallets and the best of Smart Account wallets.

1. Smart Account benefits:

  • Multichain Orchestration support (single signature, multiple transactions across multiple chains)
  • Transaction batching support
  • Sponosring gas for user transactions
  • Paying for gas with ERC-20 tokens (even across chains)

2. EOA benefits

  • Preserving user transaction history
  • User assets all on one address (no fragmentation)
  • Account portability (users can export their account to different wallets)

With Biconomy Smart EOAs - you don't have to choose.

There are two core ways to use Smart EOAs:

  1. Companion Accounts
    Works with external wallets (MetaMask, Trust, Rabby, ...) and doesn't require EIP-7702 (but is fully compatible with EIP-7702)

  2. Direct Delegation
    Works with embedded wallets (Privy, Dynamic, Web3Auth, Magic, ...). Requires both the wallet and the chain to support EIP-7702.

Companion Accounts

The Biconomy approach to Smart EOAs for External Wallets (MetaMask, Rabby, Trust, ...) uses the Companion Account model! The Companion Account is a passthrough smart account deployed and owned by the application through which all user transactions are processed. The core difference of the Companion Account flow from traditional account flows is that Companion Accounts never hold funds.

The standard Companion Account flow is:

  1. Deposit required tokens into the Companion Account
  2. Process all the necessary transactions
  3. Return all resulting tokens/positions/assets back into the EOA

Direct Delegation

Certain types of wallets allow users to delegate directly to a Biconomy Nexus account. When working with those wallets, developers don't need to use Companion Accounts. For now, this mostly applies to embedded wallets such as Privy, Dynamic, etc...

Check out this guide to learn how to use direct delegation.