Token Checker for EVM chains

Tool to check for honeypot, liquidity, buy and sell taxes without spending a dime...safeguard your investments! (works with public RPCs)

How to use

$ npm install

$ anvil --fork-url <Your-mainnet-rpc>

For testing tokens with v2 pool

$ node index.js <any-wallet-address> <router-address> <token-to-buy-with (wETH or token the tested token is pegged with)> <token-to-be-tested>

for example

$ anvil --fork-url https://eth.llamarpc.com
$ node index.js <wallet-address-goes-here> 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 0xdAC17F958D2ee523a2206206994597C13D831ec7

The above should test for a uniswapv2 pool of wETH and USDT on the forked ETH Mainnet

For testing tokens with v3 pool

$ node v3.js <any-wallet-address> <router-address> <token-to-buy-with (wETH or token the tested token is pegged with)> <token-to-be-tested> <fee 1, 0.3 or 0.05 >

for example

$ anvil --fork-url https://eth.llamarpc.com
$ node index.js <wallet-address-goes-here> 0xe592427a0aece92de3edee1f18e0157c05861564 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2 0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599 0.3

The above should test for a uniswapv3 pool of wETH and wBTC having a 0.3% fee on the forked ETH Mainnet

To run tests

$ npm run test

Impersonating wallets to test blacklist functionalities ** Proposed Solution Not Yet Implemented **

The smart contracts in this repository can be used for simulating a transaction without spending any gas money using the constructor calls/returns however it is not possible to check for different wallets as msg.sender for all calls will always be the smart contract address. These tests of impersonating a wallet maybe performed by forking an archive node and using anvil_impersonateAccount or hardhat_impersonateAccount

• Fork an archive node as it would contain more older block data than a full node (for testing a token state in a past block)
• Send a request through the localhost provider of anvil_impersonateAccount or hardhat_impersonateAccount with the params as the address to impersonate
• Send a transaction to the swap contract using the impersonated account (buying and selling)
• if the selling tx throws an error the address might be blacklisted, confirm it by sending the buying and selling transactions from prefferably newly created wallet impersonation

This can be confrimed with a fork of a full node as well but states olders than 128 blocks might not be available

Draw back for the said approach is that it will be slower than a smart contract call performing all these in one transaction

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

Foundry consists of:

• Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
• Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
• Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
• Chisel: Fast, utilitarian, and verbose solidity REPL.

Documentation

https://book.getfoundry.sh/

Usage

Build

$ forge build

Test

$ forge test

Format

$ forge fmt

Gas Snapshots

$ forge snapshot

Anvil

$ anvil

Deploy

$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>

Cast

$ cast <subcommand>

Help

$ forge --help
$ anvil --help
$ cast --help