> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pulend.art/llms.txt
> Use this file to discover all available pages before exploring further.

# Parameters

> Protocol configuration and risk parameters

## LendingPool Parameters

| Parameter         | Description               | Default      |
| ----------------- | ------------------------- | ------------ |
| `ltv`             | Loan-to-Value ratio       | 70% (0.7e18) |
| `minSupplyAmount` | Minimum liquidity deposit | 1 USDC       |
| `collateralToken` | Accepted NFT collateral   | CryptoPunks  |
| `borrowToken`     | Token available to borrow | USDC         |

## Interest Rate Model

| Parameter            | Description                   | Value         |
| -------------------- | ----------------------------- | ------------- |
| `baseRate`           | Minimum interest rate         | 2% APY        |
| `optimalUtilization` | Target pool utilization       | 80% (0.8e18)  |
| `rateAtOptimal`      | Rate at optimal utilization   | 10% APY       |
| `maxUtilization`     | Maximum allowed utilization   | 95% (0.95e18) |
| `scaledPercentage`   | Rate multiplier above optimal | 100%          |

### Rate Calculation Examples

| Utilization   | Borrow APY | Supply APY |
| ------------- | ---------- | ---------- |
| 0%            | 2%         | 0%         |
| 50%           | 6%         | 3%         |
| 80% (optimal) | 10%        | 8%         |
| 90%           | \~32%      | \~29%      |
| 95%           | \~55%      | \~52%      |

## Collateral Configuration

| Parameter             | Value                          |
| --------------------- | ------------------------------ |
| Collateral Type       | NFT Assets (ERC-721)           |
| Accepted Collection   | CryptoPunks (Arbitrum Sepolia) |
| Floor Price Oracle    | TokenDataStream contract       |
| Liquidation Threshold | Health Factor \< 1.0           |

## Token Decimals

| Token | Decimals |
| ----- | -------- |
| USDC  | 8        |
| WETH  | 8        |
| WBTC  | 8        |

## Access Control Roles

| Role                 | Permission             |
| -------------------- | ---------------------- |
| `DEFAULT_ADMIN_ROLE` | Full admin access      |
| `OWNER_ROLE`         | Protocol configuration |
| `UPGRADER_ROLE`      | Contract upgrades      |

<Note>
  Parameters are set during contract initialization and can be updated by
  governance via `OWNER_ROLE`.
</Note>