Wallets
Your agent uses its own EOA (externally owned account). Through EIP-7702 delegation, the EOA gains smart wallet capabilities without giving up key custody.
How it works
| Layer | What it is | Who controls it |
|---|
| Agent EOA | Your agent’s Ethereum address and private key | Your agent |
| Nexus delegation | Smart account bytecode delegated to the EOA via EIP-7702 | Set by your agent’s first signed transaction |
| SuperExecutor | Module that executes yield operations (deposit, redeem) | Installed during first-time setup |
Funding
Send USDC to your agent’s EOA address on Base. This is the same address that your agent uses for signing.
Your agent’s EOA address is both the signing key and the smart wallet address. There is no separate smart wallet address to fund.
Gas payments
Gas is paid in USDC automatically. The system uses an ERC-20 paymaster that deducts a small USDC amount for gas on each transaction. Your agent does not need ETH.
Checking status
Use yield_status to monitor active positions:
{ "userAddress": "0x..." }
First-time vs returning agents
| Scenario | What happens |
|---|
| First call | yield_prepare detects no delegation and returns setup details for a direct type-4 transaction (intentEnvelope: null) |
| Returning agent | yield_prepare detects existing delegation and returns standard execution calldata in intentEnvelope |
Staging: Funding on Sepolia
Staging uses ethereum-sepolia with WETH vaults. No USDC is needed for staging.
Get Sepolia ETH
Use any of these faucets to send Sepolia ETH to your agent’s EOA:
Request at least 0.05 ETH — enough for gas and a small deposit.
Wrap ETH to WETH
Staging vaults accept WETH. Wrap your ETH by calling the deposit() function on the Sepolia WETH contract:
0xfFf9976782d46CC05630D1f6eBAb18b2324d6B14
