🛣️ Batch multiple calls to any onchain smart contract in a single transaction, handling any callback, without writing and deploying any contract!
Ethereum's environment evolves fast. So fast that you can't keep up writing and deploying a new contract everytime you want to do something atomically onchain (not mentioning you also have to approve this freshly deployed contract to spend your favorite ERC20/ERC721!).
Welcome the Executor contract:
- Calculate whatever you need to submit your execution
- Chain calls / delegatecalls as needed to execute whatever you want to execute atomically onchain (using
viemand/orethers-v6!) - Optionally prepend any ERC20/ERC721 approval via a third-party bundling service (such as Flashbots)
- Submit your execution transaction (or bundle)
- For MEV out there: tip the bundler
You can even atomically populate your chain of calls if it depends on some state change! For example, you can skim ERC20 tokens after an execution by simply requesting the balance left onchain and replacing it in the onchain call.
npm install executooor-viemyarn add executooor-viemnpm install executooor-ethersyarn add executooor-ethersDeploy your very own Executor contract with the owner address you want, once and for all, using the custom deployment interface (that you can also build locally).
The exact deployment bytecode is given below for convenience. You can deploy the Executor by broadcasting a transaction with this exact bytecode, appended with the owner address you want (typically your bot address).
A merely cost of 0.003 ETH @ 10 gwei!
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{YOUR_20_BYTES_OWNER_ADDRESS}Create an ExecutorEncoder instance and chain any calls wanted. Then, submit the transaction using exec (or populate the transaction using populateExec!).
import { ExecutorEncoder } from "executooor";
const encoder = new ExecutorEncoder(executorAddress, signer);
await encoder
// Flash loan some tokens on Balancer (0% fee).
.balancerFlashLoan(
balancerVaultAddress,
[{ asset: dai, amount: collateralAmount }],
// Chain calls executed inside Balancer's flash loan callback then flush it.
encoder
.erc20Approve(dai, aaveV2PoolAddress, collateralAmount)
.aaveV2Supply(aaveV2PoolAddress, dai, collateralAmount)
.aaveV2Borrow(aaveV2PoolAddress, weth, borrowedAmount, 2)
.unwrapETH(weth, borrowedAmount)
.wrapETH(weth, borrowedAmount)
.erc20Approve(weth, aaveV2PoolAddress, borrowedAmount)
.aaveV2Repay(aaveV2PoolAddress, weth, borrowedAmount, 2)
.aaveV2Withdraw(aaveV2PoolAddress, dai, MaxUint256)
.flush(),
)
// Execute the transaction.
.exec();import { ExecutorEncoder } from "executooor";
const encoder = new ExecutorEncoder(executorAddress, walletClient);
await encoder
// Flash loan some tokens on Balancer (0% fee).
.balancerFlashLoan(
balancerVaultAddress,
[{ asset: dai, amount: collateralAmount }],
// Chain calls executed inside Balancer's flash loan callback then flush it.
encoder
.erc20Approve(dai, aaveV2PoolAddress, collateralAmount)
.aaveV2Supply(aaveV2PoolAddress, dai, collateralAmount)
.aaveV2Borrow(aaveV2PoolAddress, weth, borrowedAmount, 2)
.unwrapETH(weth, borrowedAmount)
.wrapETH(weth, borrowedAmount)
.erc20Approve(weth, aaveV2PoolAddress, borrowedAmount)
.aaveV2Repay(aaveV2PoolAddress, weth, borrowedAmount, 2)
.aaveV2Withdraw(aaveV2PoolAddress, dai, MaxUint256)
.flush(),
)
// Execute the transaction.
.exec();
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