Live on Base Sepolia·Mainnet soon

Yield that
knows when
to say no.

A risk-aware USDC vault on Base. The keeper scores every opportunity across four axes — and only allocates where yield justifies the exposure.

Launch App See how it works
—
Blended APY
18/100
Risk Score
3
Strategies

Built different

Most vaults chase the highest number. Zield chases the best risk-adjusted number.

4-Axis Risk Scoring

Every strategy is scored on smart contract risk, market risk, liquidity depth, and operational risk before a single dollar moves.

Live On-Chain Data

Aave v3 supply rates are read directly from the Base mainnet pool contract every cycle. No oracle assumptions, no stale feeds.

Automated Rebalancing

A permissioned keeper calls rebalance() on-chain after the off-chain engine determines the allocation change justifies gas costs.

ERC-4626 Vault

Standard share token. Any protocol that integrates ERC-4626 (Morpho, Euler, treasuries) can treat zUSDC as a yield-bearing primitive.

Performance Fee Only

Zield earns 10% of positive yield — nothing on deposits, nothing on withdrawals, nothing when the vault makes nothing.

Gas-Aware Decisions

The keeper computes rebalance gas cost before execution. If net benefit is below the safety margin, the rebalance is skipped.

How it works

Five steps from deposit to optimized yield.

1
Deposit USDC
Approve and deposit in one flow. You receive zUSDC share tokens representing your pro-rata slice of the vault.
2
Engine scans protocols
The risk engine reads live APY from Aave v3 on-chain and scans DefiLlama for emerging opportunities on Base.
3
Risk scoring filters the list
Each candidate is scored 0–100 across four axes. Only opportunities passing the composite threshold proceed.
4
Keeper executes allocation
The keeper calls rebalance() on-chain: withdraws from overweight strategies, deposits into underweight ones. Fully verifiable.
5
Yield accrues to your shares
As strategies earn yield, totalAssets() grows. Your shares redeem for more USDC than you deposited — no claiming required.

The Risk Engine

A composite score across four independent axes. Lower is safer.

Example — Aave v3 USDC on Base
Composite score: 16 / 100
Smart Contract18/100
3 audits, 2yr live, $1M bug bounty
Market12/100
Pure USDC, minimal depeg exposure
Liquidity20/100
$200M+ pool depth on Base
Operational15/100
3/5 multisig, open-source, no incidents
Low Risk — Approved
Smart Contract Risk
Audit count, age, bug bounty size, verified source code. Protocols with 3+ audits from top firms score below 25.
Market Risk
Stablecoin depeg exposure, collateral concentration, and correlation to broader market drawdowns.
Liquidity Risk
TVL depth vs. vault position size. A shallow pool can't support a large exit without significant slippage.
Operational Risk
Admin key exposure, upgrade multisig quality, team track record, incident history.
Base Sepolia testnet — mainnet coming

Ready to earn smarter yield?

Connect MetaMask, get test USDC from the Base faucet, and watch the keeper allocate in real time.

Launch App
Z
Zield — risk-aware yield on Base
AppGitHub
Testnet only · No audits · Not financial advice