[Python] I am trying to make an Arbitrary trading bot on Arbitrum Chain on Python but having...

I am trying to make a python arbitrary trading bot on for Arbitrum chain.

I am having issues with router addresses for Uniswap and Camelot and ABIs.

I am trying to compare prices from Uniswap and Camelot for ETH and DAI.

I am trying to first do some testing successfully on Sepolia testnet before proceeding forward.

However I am unable to verify the contracts and getting errors.

'mainnet': {
'rpc_urls': [
'https://arb1.arbitrum.io/rpc',
'https://arbitrum-one.publicnode.com',
],
'tokens': {
'WETH': '0x82aF49447D8a07e3bd95BD0d56f35241523fBab1',
'DAI': '0xDA10009cBd5D07dd0CeCc66161FC93D7c9000da1'
},
'routers': {
'Uniswap': '0x4C60051384bd2d3C01bfc845Cf5F4b44bcbE9de5',
'Camelot': '0xc873fEcbd354f5A56E00E710B90EF4201db2448d'
}
},
'testnet': {
'rpc_urls': [
'https://sepolia-rollup.arbitrum.io/rpc',
'https://arbitrum-sepolia.publicnode.com',
'https://arbitrum-sepolia-rpc.publicnode.com',
'https://arb-sepolia.g.alchemy.com/v2/MYKEY'
],
'tokens': {
'WETH': '0x980B62Da83eFf3D4576C647993b0c1D7faf17c73',
'DAI': '0x9bc8388dD439fa3365B1F78A81242aDBB4677759'
},
'routers': {
'Uniswap': '0x101F443a4A2D26158236F5aD075C6591b03Fc3c5',
'Camelot': '0x171B925C51565F5D2a7d8C494ba3188D304EFD93'
}
}


With the help of some Claude I was able to add these ABI's because the one's I got from the explorer did not work either.

self.erc20_abi = [
{
"constant": False,
"inputs": [
{"name": "_spender", "type": "address"},
{"name": "_value", "type": "uint256"}
],
"name": "approve",
"outputs": [{"name": "success", "type": "bool"}],
"type": "function"
},
{
"constant": True,
"inputs": [{"name": "_owner", "type": "address"}],
"name": "balanceOf",
"outputs": [{"name": "balance", "type": "uint256"}],
"type": "function"
}
]

# Uniswap V2 Router ABI (simplified)
self.uniswap_v2_abi = [
{
"inputs": [],
"name": "WETH",
"outputs": [{"internalType": "address", "name": "", "type": "address"}],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{"internalType": "uint256", "name": "amountIn", "type": "uint256"},
{"internalType": "address[]", "name": "path", "type": "address[]"}
],
"name": "getAmountsOut",
"outputs": [{"internalType": "uint256[]", "name": "amounts", "type": "uint256[]"}],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{"internalType": "uint256", "name": "amountOutMin", "type": "uint256"},
{"internalType": "address[]", "name": "path", "type": "address[]"},
{"internalType": "address", "name": "to", "type": "address"},
{"internalType": "uint256", "name": "deadline", "type": "uint256"}
],
"name": "swapExactETHForTokens",
"outputs": [{"internalType": "uint256[]", "name": "amounts", "type": "uint256[]"}],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [
{"internalType": "uint256", "name": "amountIn", "type": "uint256"},
{"internalType": "uint256", "name": "amountOutMin", "type": "uint256"},
{"internalType": "address[]", "name": "path", "type": "address[]"},
{"internalType": "address", "name": "to", "type": "address"},
{"internalType": "uint256", "name": "deadline", "type": "uint256"}
],
"name": "swapExactTokensForETH",
"outputs": [{"internalType": "uint256[]", "name": "amounts", "type": "uint256[]"}],
"stateMutability": "nonpayable",
"type": "function"
}
]

# Camelot Router ABI
self.camelot_abi = [
{
"inputs": [],
"name": "WETH",
"outputs": [{"internalType": "address", "name": "", "type": "address"}],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{"internalType": "uint256", "name": "amountIn", "type": "uint256"},
{"internalType": "address[]", "name": "path", "type": "address[]"}
],
"name": "getAmountsOut",
"outputs": [{"internalType": "uint256[]", "name": "amounts", "type": "uint256[]"}],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{"internalType": "uint256", "name": "amountOutMin", "type": "uint256"},
{"internalType": "address[]", "name": "path", "type": "address[]"},
{"internalType": "address", "name": "to", "type": "address"},
{"internalType": "address", "name": "referrer", "type": "address"},
{"internalType": "uint256", "name": "deadline", "type": "uint256"}
],
"name": "swapExactETHForTokensSupportingFeeOnTransferTokens",
"outputs": [],
"stateMutability": "payable",
"type": "function"
},
{
"inputs": [
{"internalType": "uint256", "name": "amountIn", "type": "uint256"},
{"internalType": "uint256", "name": "amountOutMin", "type": "uint256"},
{"internalType": "address[]", "name": "path", "type": "address[]"},
{"internalType": "address", "name": "to", "type": "address"},
{"internalType": "address", "name": "referrer", "type": "address"},
{"internalType": "uint256", "name": "deadline", "type": "uint256"}
],
"name": "swapExactTokensForETHSupportingFeeOnTransferTokens",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
}
]


Any suggestions or alternatives are most most welcome.

Continue reading...