# Yield Optimiser

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### Yield Optimiser Documentation

#### 1. Why Lending Needs Fixing

Lending protocols are one of the cornerstones of DeFi. As of March 2025, they account for **42 % of total DeFi TVL** (DefiLlama: total DeFi TVL $101 B). Yet most users never fully capture their potential because they:

* Don’t know that rates can spike dramatically between protocols
* Lack tools to chase those spikes in real time
* Aren’t watching protocol health closely enough to avoid losses

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#### 2. Introducing Otomato’s Lending Aggregator

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An optimized yield engine—built on top of Otomato OS—that does the heavy lifting for you. With a single deposit, you get:

* **Yield Optimization**\
  Your assets move automatically across AAVE, Compound and Morpho to lock in the highest rates.
* **Bad Debt Protection** (coming soon)\
  Our Off-Chain Guardians watch for protocol risks—suspicious txs, governance upgrades, oracle quirks or bad debt—and pull your funds out before trouble hits.

> **What is Bad Debt?**\
> When a lending pool suffers a depeg, oracle exploit, hack or market crash, its collateral can become insufficient to cover all deposits. If the protocol’s reserve can’t fill the gap, withdrawals leave later users underwater.

Otomato’s Off-Chain Guardians detect early warning signs—like oracle price divergence or unusual tx patterns—and trigger an emergency withdrawal **before** a bank-run scenario unfolds.

***

#### 3. How It Works

1. **Deposit**\
   User sends asset (for example USDC) to the Lending Aggregator smart account.
2. **Monitor Rates**\
   Trigger Layer polls on-chain rate oracles and off-chain APIs for Aave, Compound, Morpho, etc.
3. **Decision Engine**\
   Logic Engine evaluates where APY is highest, factoring in gas costs and slippage limits.
4. **Rebalance**\
   Action Executor bundles and sends ERC-4337 UserOperations to move funds to the optimal protocol.
5. **Protect (coming soon)**\
   Off-Chain Guardians continuously scan for risk signals; on detection, they override the normal flow and issue emergency exits.
6. **Notify**\
   Smart Notification app pushes real-time alerts when rebalances or emergency exits occur.

***

#### 4. Key Features

* **Multi-Protocol Yield**\
  Automate deposits/withdrawals across AAVE V3, Compound V3 and Morpho without manual intervention.
* **Custom Risk Controls**\
  Set slippage limits, gas-price caps and minimum-APY thresholds.
* **Fee & Cost Efficiency**\
  Batch transactions and leverage paymasters to reduce on-chain fees.
* **Transparency & Analytics**
* **Extensible Architecture**\
  Add new protocols or custom strategies via JavaScript modules—no contract redeploys needed.

***