hood// SPDX-License-Identifier: MIT
pragma solidity ^0.8.28;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Ownable2Step} from "@openzeppelin/contracts/access/Ownable2Step.sol";
import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import {IUniversalRouter} from "./interfaces/IUniversalRouter.sol";
import {IPermit2} from "./interfaces/IPermit2.sol";
import {UniversalRouterLib} from "./libraries/UniversalRouterLib.sol";
import {Addresses} from "./config/Addresses.sol";
/// @title HoodPerp BuybackVault
/// @notice Accumulates protocol fee revenue (USDG) and, on a keeper-triggered cadence, market-buys
/// HOOD via Uniswap and burns it.
///
/// @dev Pricing uses a keeper-supplied `minHoodOut` floor, bounded on-chain by an owner-set
/// `minHoodPerUsdg` rate (HOOD wei per 1 USDG micro-unit). A compromised keeper cannot
/// undercut that rate. Additional blast-radius limits:
/// 1. Swaps only through the owner-set USDG -> WETH -> HOOD Uniswap v3 route.
/// 2. `maxSpendPerRun` caps USDG spent per run (required at deploy).
/// 3. `interval` throttles frequency (nonzero at deploy).
/// `rescue()` is scoped to exclude USDG/HOOD so the owner cannot sweep protocol funds.
contract BuybackVault is Ownable2Step, ReentrancyGuard {
using SafeERC20 for IERC20;
IERC20 public immutable usdg;
IERC20 public immutable hood;
IUniversalRouter public immutable universalRouter;
IPermit2 public immutable permit2;
address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD;
uint48 internal constant MAX_EXPIRATION = type(uint48).max;
uint256 public interval;
uint256 public lastRun;
address public keeper;
/// @notice Owner-set Uniswap v3 route: USDG -> WETH -> HOOD.
bool public hoodRouteSet;
uint24 public usdgWethFee;
uint24 public wethHoodFee;
/// @notice Max USDG spent per buyback run (bounds a compromised-keeper blast radius).
uint256 public maxSpendPerRun;
/// @notice Minimum HOOD (18 decimals) per 1 USDG micro-unit (6 decimals).
/// On-chain floor: `amountIn * minHoodPerUsdg / 1e6`.
uint256 public minHoodPerUsdg;
bool public minRateSet;
event BuybackExecuted(uint256 usdgSpent, uint256 hoodBought, uint256 timestamp);
event KeeperUpdated(address indexed keeper);
event IntervalUpdated(uint256 interval);
event HoodRouteUpdated(uint24 usdgWethFee, uint24 wethHoodFee);
event MaxSpendPerRunUpdated(uint256 maxSpendPerRun);
event MinHoodPerUsdgUpdated(uint256 minHoodPerUsdg);
error NotKeeper();
error TooSoon(uint256 nextAllowed);
error NothingToSpend();
error AmountTooLarge();
error NotConfigured();
error ZeroMinOut();
error ProtectedToken();
error InsufficientOutput(uint256 received, uint256 minRequired);
error ZeroMaxSpend();
error ZeroInterval();
error MinOutBelowFloor(uint256 minHoodOut, uint256 floor);
constructor(
address _usdg,
address _hood,
address _universalRouter,
address _permit2,
uint256 _interval,
uint256 _maxSpendPerRun,
address _owner
) Ownable(_owner) {
if (_interval == 0) revert ZeroInterval();
if (_maxSpendPerRun == 0) revert ZeroMaxSpend();
usdg = IERC20(_usdg);
hood = IERC20(_hood);
universalRouter = IUniversalRouter(_universalRouter);
permit2 = IPermit2(_permit2);
interval = _interval;
maxSpendPerRun = _maxSpendPerRun;
}
modifier onlyKeeper() {
if (msg.sender != keeper) revert NotKeeper();
_;
}
// --- Configuration (owner; recommend multisig + timelock) ---
function setKeeper(address _keeper) external onlyOwner {
keeper = _keeper;
emit KeeperUpdated(_keeper);
}
function setInterval(uint256 _interval) external onlyOwner {
if (_interval == 0) revert ZeroInterval();
interval = _interval;
emit IntervalUpdated(_interval);
}
/// @notice Set the Uniswap v3 buyback route (USDG -> WETH -> HOOD).
function setHoodRoute(uint24 _usdgWethFee, uint24 _wethHoodFee) external onlyOwner {
usdgWethFee = _usdgWethFee;
wethHoodFee = _wethHoodFee;
hoodRouteSet = true;
emit HoodRouteUpdated(_usdgWethFee, _wethHoodFee);
}
function setMaxSpendPerRun(uint256 _maxSpendPerRun) external onlyOwner {
if (_maxSpendPerRun == 0) revert ZeroMaxSpend();
maxSpendPerRun = _maxSpendPerRun;
emit MaxSpendPerRunUpdated(_maxSpendPerRun);
}
/// @notice Set the on-chain HOOD/USDG floor rate. Keeper `minHoodOut` must meet this bound.
function setMinHoodPerUsdg(uint256 _minHoodPerUsdg) external onlyOwner {
if (_minHoodPerUsdg == 0) revert ZeroMinOut();
minHoodPerUsdg = _minHoodPerUsdg;
minRateSet = true;
emit MinHoodPerUsdgUpdated(_minHoodPerUsdg);
}
/// @notice Direct keeper entrypoint. `minHoodOut` is the off-chain-derived floor (HOOD base units).
function executeBuyback(uint256 minHoodOut, uint256 deadline) external onlyKeeper nonReentrant {
_buyback(minHoodOut, deadline);
}
function _buyback(uint256 minHoodOut, uint256 deadline) internal {
if (block.timestamp < lastRun + interval) revert TooSoon(lastRun + interval);
if (!hoodRouteSet || !minRateSet) revert NotConfigured();
if (minHoodOut == 0) revert ZeroMinOut();
uint256 balance = usdg.balanceOf(address(this));
if (balance == 0) revert NothingToSpend();
uint256 amountIn = balance > maxSpendPerRun ? maxSpendPerRun : balance;
if (amountIn > type(uint128).max) revert AmountTooLarge();
uint256 onChainFloor = (amountIn * minHoodPerUsdg) / 1e6;
if (minHoodOut < onChainFloor) revert MinOutBelowFloor(minHoodOut, onChainFloor);
// Effects before interactions.
lastRun = block.timestamp;
usdg.forceApprove(address(permit2), amountIn);
permit2.approve(address(usdg), address(universalRouter), uint160(amountIn), MAX_EXPIRATION);
uint256 hoodBefore = hood.balanceOf(address(this));
_executeSwap(amountIn, minHoodOut, deadline);
uint256 hoodBought = hood.balanceOf(address(this)) - hoodBefore;
if (hoodBought < minHoodOut) revert InsufficientOutput(hoodBought, minHoodOut);
usdg.forceApprove(address(permit2), 0);
permit2.approve(address(usdg), address(universalRouter), 0, 0);
hood.safeTransfer(BURN_ADDRESS, hoodBought);
emit BuybackExecuted(amountIn, hoodBought, block.timestamp);
}
function _executeSwap(uint256 amountIn, uint256 minHoodOut, uint256 deadline) internal {
bytes memory path = UniversalRouterLib.buildV3PathTwoHop(
address(usdg), usdgWethFee, Addresses.WETH, wethHoodFee, address(hood)
);
(bytes memory commands, bytes[] memory inputs) =
UniversalRouterLib.buildV3ExactIn(path, address(this), amountIn, minHoodOut);
universalRouter.execute(commands, inputs, deadline);
}
// --- Admin recovery for stray tokens (protocol funds USDG/HOOD are NOT sweepable) ---
function rescue(address token, address to, uint256 amount) external onlyOwner {
if (token == address(usdg) || token == address(hood)) revert ProtectedToken();
IERC20(token).safeTransfer(to, amount);
}
}[
{
"type": "constructor",
"inputs": [
{
"name": "_usdg",
"type": "address",
"internalType": "address"
},
{
"name": "_hood",
"type": "address",
"internalType": "address"
},
{
"name": "_universalRouter",
"type": "address",
"internalType": "address"
},
{
"name": "_permit2",
"type": "address",
"internalType": "address"
},
{
"name": "_interval",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "_maxSpendPerRun",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "_owner",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "AmountTooLarge",
"type": "error",
"inputs": []
},
{
"name": "AmountTooLarge",
"type": "error",
"inputs": []
},
{
"name": "InsufficientOutput",
"type": "error",
"inputs": [
{
"name": "received",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "minRequired",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "MinOutBelowFloor",
"type": "error",
"inputs": [
{
"name": "minHoodOut",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "floor",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "NotConfigured",
"type": "error",
"inputs": []
},
{
"name": "NotKeeper",
"type": "error",
"inputs": []
},
{
"name": "NothingToSpend",
"type": "error",
"inputs": []
},
{
"name": "OwnableInvalidOwner",
"type": "error",
"inputs": [
{
"name": "owner",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "OwnableUnauthorizedAccount",
"type": "error",
"inputs": [
{
"name": "account",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "ProtectedToken",
"type": "error",
"inputs": []
},
{
"name": "ReentrancyGuardReentrantCall",
"type": "error",
"inputs": []
},
{
"name": "SafeERC20FailedOperation",
"type": "error",
"inputs": [
{
"name": "token",
"type": "address",
"internalType": "address"
}
]
},
{
"name": "TooSoon",
"type": "error",
"inputs": [
{
"name": "nextAllowed",
"type": "uint256",
"internalType": "uint256"
}
]
},
{
"name": "ZeroInterval",
"type": "error",
"inputs": []
},
{
"name": "ZeroMaxSpend",
"type": "error",
"inputs": []
},
{
"name": "ZeroMinOut",
"type": "error",
"inputs": []
},
{
"name": "BuybackExecuted",
"type": "event",
"inputs": [
{
"name": "usdgSpent",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
},
{
"name": "hoodBought",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
},
{
"name": "timestamp",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "HoodRouteUpdated",
"type": "event",
"inputs": [
{
"name": "usdgWethFee",
"type": "uint24",
"indexed": false,
"internalType": "uint24"
},
{
"name": "wethHoodFee",
"type": "uint24",
"indexed": false,
"internalType": "uint24"
}
],
"anonymous": false
},
{
"name": "IntervalUpdated",
"type": "event",
"inputs": [
{
"name": "interval",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "KeeperUpdated",
"type": "event",
"inputs": [
{
"name": "keeper",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "MaxSpendPerRunUpdated",
"type": "event",
"inputs": [
{
"name": "maxSpendPerRun",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "MinHoodPerUsdgUpdated",
"type": "event",
"inputs": [
{
"name": "minHoodPerUsdg",
"type": "uint256",
"indexed": false,
"internalType": "uint256"
}
],
"anonymous": false
},
{
"name": "OwnershipTransferStarted",
"type": "event",
"inputs": [
{
"name": "previousOwner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "newOwner",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "OwnershipTransferred",
"type": "event",
"inputs": [
{
"name": "previousOwner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "newOwner",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "BURN_ADDRESS",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "acceptOwnership",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "executeBuyback",
"type": "function",
"inputs": [
{
"name": "minHoodOut",
"type": "uint256",
"internalType": "uint256"
},
{
"name": "deadline",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "hood",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "contract IERC20"
}
],
"stateMutability": "view"
},
{
"name": "hoodRouteSet",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "view"
},
{
"name": "interval",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "keeper",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "lastRun",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "maxSpendPerRun",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "minHoodPerUsdg",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint256",
"internalType": "uint256"
}
],
"stateMutability": "view"
},
{
"name": "minRateSet",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "bool",
"internalType": "bool"
}
],
"stateMutability": "view"
},
{
"name": "owner",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "pendingOwner",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "permit2",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "contract IPermit2"
}
],
"stateMutability": "view"
},
{
"name": "renounceOwnership",
"type": "function",
"inputs": [],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "rescue",
"type": "function",
"inputs": [
{
"name": "token",
"type": "address",
"internalType": "address"
},
{
"name": "to",
"type": "address",
"internalType": "address"
},
{
"name": "amount",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setHoodRoute",
"type": "function",
"inputs": [
{
"name": "_usdgWethFee",
"type": "uint24",
"internalType": "uint24"
},
{
"name": "_wethHoodFee",
"type": "uint24",
"internalType": "uint24"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setInterval",
"type": "function",
"inputs": [
{
"name": "_interval",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setKeeper",
"type": "function",
"inputs": [
{
"name": "_keeper",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setMaxSpendPerRun",
"type": "function",
"inputs": [
{
"name": "_maxSpendPerRun",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setMinHoodPerUsdg",
"type": "function",
"inputs": [
{
"name": "_minHoodPerUsdg",
"type": "uint256",
"internalType": "uint256"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "transferOwnership",
"type": "function",
"inputs": [
{
"name": "newOwner",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "universalRouter",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "contract IUniversalRouter"
}
],
"stateMutability": "view"
},
{
"name": "usdg",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "contract IERC20"
}
],
"stateMutability": "view"
},
{
"name": "usdgWethFee",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint24",
"internalType": "uint24"
}
],
"stateMutability": "view"
},
{
"name": "wethHoodFee",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint24",
"internalType": "uint24"
}
],
"stateMutability": "view"
}
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| Token | Symbol | Balance | Price | Value |
|---|---|---|---|---|
| no token holdings | ||||
| Type | Age | Block | Details |
|---|---|---|---|
| no cross-chain L1↔L2 transactions for this address | |||
| Block | Age | Parent Transaction Hash | Type | Method | From | To | Value | |
|---|---|---|---|---|---|---|---|---|
| no internal transactions found for this address yet (traced blocks + on-demand) | ||||||||
| Transaction Hash | Method | Block | Age | From | To | Type | Item | ||
|---|---|---|---|---|---|---|---|---|---|
| no NFT transfers for this address yet | |||||||||
| Txn Hash | Age | Event | Topics / Data |
|---|---|---|---|
| 0x19a4ef…c3da1a | 31 days agoWed, 15 Jul 2026 15:17:09 UTC | 0x0425bc…6c2e | [0] 0x000000000000…e40fb719 |
| 0x07c86e…6d04b5 | 31 days agoWed, 15 Jul 2026 15:17:09 UTC | 0x6b72b1…4f39 | data: 0x000000000000000000…a4d0b800 |
| 0xa253f9…599a9a | 31 days agoWed, 15 Jul 2026 15:17:09 UTC | 0xe3a676…37bc | data: 0x000000000000000000…00002710 |
| 0xc3ed8f…5936d1 | 31 days agoWed, 15 Jul 2026 15:10:13 UTC | 0x8be007…57e0 | [0] 0x000000000000…00000000 [1] 0x000000000000…e40fb719 |
| Transaction Hash | Method | Block | Age | From | To | Amount | Token | ||
|---|---|---|---|---|---|---|---|---|---|
| no token transfers for this address yet | |||||||||
| Transaction Hash | Method ? | Block | Age | From | To | Amount | Txn Fee ? | ||
|---|---|---|---|---|---|---|---|---|---|
| 0x19a4ef…c3da1a | setKeeper | 10,494,220 | 31 days agoWed, 15 Jul 2026 15:17:09 UTC | 0x6317…b719 | IN | BuybackVault | $0.000 ETH | 0.00000190 | |
| 0xa253f9…599a9a | setHoodRoute | 10,494,220 | 31 days agoWed, 15 Jul 2026 15:17:09 UTC | 0x6317…b719 | IN | BuybackVault | $0.000 ETH | 0.00000300 | |
| 0x07c86e…6d04b5 | setMinHoodPerUsdg | 10,494,220 | 31 days agoWed, 15 Jul 2026 15:17:09 UTC | 0x6317…b719 | IN | BuybackVault | $0.000 ETH | 0.00000435 |