defi-protocol-templates

Use the StakingRewards template, which tracks rewardPerToken over time and credits users proportionally to their staked balance. It inherits OpenZeppelin ReentrancyGuard and Ownable, and you configure the staking token, rewards token, and rewardRate in the constructor.

The SimpleAMM template implements a constant-product market maker with addLiquidity, removeLiquidity, and swap functions. It mints LP shares proportional to deposits and applies a 0.3% fee on swaps using the 997/1000 formula.

Yes, the Governor contract uses OpenZeppelin ERC20Votes to read historical voting power via getPastVotes at the proposal start block. It enforces a proposal threshold, a voting period of 17280 blocks, and one vote per address.

The FlashLoanProvider transfers tokens to a receiver contract, calls its executeOperation callback, then verifies the balance increased by the fee. The receiver must implement the IFlashLoanReceiver interface and approve repayment of amount plus the 0.09% fee.

These templates are educational starting points, not audited production code. The AMM lacks slippage protection and oracle integration, and the Governor execute function contains no actual proposal execution logic, so you must extend and audit them before deployment.