defi-protocol-templates

# DeFi Protocol Templates Production-ready templates for common DeFi protocols including staking, AMMs, governance, and flash loans. ## When to Use This Skill - Building staking platforms with reward distribution - Implementing AMM (Automated Market Maker) protocols - Creating governance token systems - Integrating flash loan functionality ## Staking Contract ```solidity // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; contract StakingRewards is ReentrancyGuard, Ownable { IERC20 public stakingToken; IERC20 public rewardsToken; uint256 public rewardRate = 100; // Rewards per second uint256 public lastUpdateTime; uint256 public rewardPerTokenStored; mapping(address => uint256) public userRewardPerTokenPaid; mapping(address => uint256) public rewards; mapping(address => uint256) public balances; uint256 private _totalSupply; event Staked(address indexed user, uint256 amount); event Withdrawn(address indexed user, uint256 amount); event RewardPaid(address indexed user, uint256 reward); constructor(address _stakingToken, address _rewardsToken) { stakingToken = IERC20(_stakingToken); rewardsToken = IERC20(_rewardsToken); } modifier updateReward(address account) { rewardPerTokenStored = rewardPerToken(); ...