Introducing LimitSwapper - a protocol that enables users to execute swaps on Uniswap through limit orders placed directly on the blockchain. With access to Uniswap's deep liquidity pool, users can enjoy the best available price with minimal slippage.
To use LimitSwapper, simply submit a limit order to the smart contract, specifying the desired token pair and threshold price. The protocol automatically monitors the market and executes the trade when the price is below the specified threshold. It's important to note that your funds are never held by the smart contract, as you only register your order for execution. Be sure to approve tokens to the LimitSwapper smart contract to avoid execution failures.
Market prices are monitored off-chain using Defender Autotasks and executed securely via a Relayer. The Autotask runs every minute and identifies orders that are ready for execution, which are then executed automatically. Currently, gas fees are subsidized by the Relayer, but a mechanism that forces users to pay for their gas along with a protocol fee may be added in the future.
The protocol is deployed on Arbitrum One, a Layer 2 scaling solution for Ethereum. This provides cheaper transaction fees for users, while keeping strong security guarantees.
| Contract Name | Contract Address(Arbitrum One) |
|---|---|
| LimitSwapper | 0xb59BE49E1c194373717Ab1d8C183B747829dD28f |
⚠️ The code in this repo has not been audited. Please use at your own risk.
Smart Contract tests are located in the test directory. These tests are written in typescript and run on a local Hardhat network.
- Install packages
$ yarn
- Run test suite
$ yarn hardhat test
To deploy the smart contracts you just need to run the deployment script and specify the right network.
- Install packages
$ yarn
-
Setup environment variables If you are going to deploy to a live network, such as goerli you need to setup some environment variables such as
GOERLI_RPC_URL,PRIVATE_KEYandETHERSCAN_API_KEY. You can do this by creating a.envfile. Use the.env.exampleas a reference. -
Deploy
$ yarn hardhat run scripts/deploy.ts --network <yourNetwork>