MEV protection refers to a broad set of strategies that keep users safe from price manipulation when trading, providing liquidity, minting NFTs, and more.
This section guides how users can perform MEV-protected transactions on Ethereum mainnet, be it swapping, token transferring, or liquidity provisioning, and will be achieved using Flashbots.
API URL: https://api.expand.network/chain/sendtransaction
Sample Request:
{
"chainId":"1",
"rawTransaction": "0xf8a68205180f82753e94dc31ee1784292379fbb2964b3b9c4124d8f89c6080b844a9059cbb000000000000000000000000a67e9b68c41b0f26184d64c26e0b2b81466e5994000000000000000000000000000000000000000000000000000000174876e8002ea0952b0468aff066f3e00a1d476b8894d84bfc47a1a3cdab9d6809a3461cc713e5a018219ee382aa3c7edf73a87bd8a75e2c40a97efbdf56a6cfd353af06fb74101d",
"mevProtection": true
}Sample Response:
{
"status": 200,
"msg": "success",
"data": {
"txHash": "0xd9cdf1483a85aa206625c66fea49059b96ffae1c086f76664cfa3f91a495d73a"
}
}1. API URL: https://api.expand.network/chain/getflashbotblocks
Sample Request:
https://api.expand.network/chain/getflashbotblocks?chainId=1Sample Response:
{
"status": 200,
"msg": "success",
"data": {
"totalPages": "535",
"currentPage": "509",
"transactions":[
{
"block_signed_at": "2023-11-21T12:04:47Z",
"block_height": 18620016,
"block_hash": "0x1e424e1f2037a4a4bb89cc2614f5ebbba61612806f665f9c9c712a08d284c699",
"tx_hash": "0xd57f92e13f0fad7d6a7540f55cc653d584793aea27be935c78df5759845eaad4",
"tx_offset": 119,
"successful": true,
"miner_address": "0x95222290dd7278aa3ddd389cc1e1d165cc4bafe5",
"from_address": "0x95222290dd7278aa3ddd389cc1e1d165cc4bafe5",
"from_address_label": null,
"to_address": "0x388c818ca8b9251b393131c08a736a67ccb19297",
"to_address_label": null,
"value": "25407585008794343",
"value_quote": 49.371036777116664,
"pretty_value_quote": "$49.37",
"gas_metadata": {
"contract_decimals": 18,
"contract_name": "Ether",
"contract_ticker_symbol": "ETH",
"contract_address": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
"supports_erc": null,
"logo_url": "https://www.datocms-assets.com/86369/1669653891-eth.svg"
},
"gas_offered": 32000,
"gas_spent": 22111,
"gas_price": 26280311476,
"fees_paid": "581083967045836",
"gas_quote": 1.1291398965184127,
"pretty_gas_quote": "$1.13",
"gas_quote_rate": 1943.1613339098476,
"explorers": [
{
"label": null,
"url": "https://etherscan.io/tx/0xd57f92e13f0fad7d6a7540f55cc653d584793aea27be935c78df5759845eaad4"
}
]
}
]
}
}2. API URL: https://api.expand.network/chain/getflashbottransactions
Sample Request:
https://api.expand.network/chain/getflashbottransactions?chainId=1Sample Response:
{
"status": 200,
"msg": "success",
"data": {
"transactions": [
{
"transaction_hash": "0xbcf55b7e9488135c12f3e70bd2a191cc19913475de6937f54cb9843865416391",
"tx_index": 0,
"bundle_index": 21,
"block_number": 18975317,
"eao_address": "0x2aC74Bd02EE017fa05629432Dd3728720c455032",
"to_address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
"gas_used": 30428,
"gas_price": "10000002",
"coinbase_transfer": "0",
"eth_sent_to_fee_recipient": "0",
"total_miner_reward": "304280060856",
"fee_recipient_eth_diff": "304280060856"
},
{
"transaction_hash": "0xd441a44e2adf57f0d53e027d4441cdfee8653cd7f259ec0c90b60ea144b31d32",
"tx_index": 0,
"bundle_index": 20,
"block_number": 18975317,
"eao_address": "0x758aC3DC8FB6F939adf42bB83e717f94619052f5",
"to_address": "0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789",
"gas_used": 118712,
"gas_price": "11300000",
"coinbase_transfer": "0",
"eth_sent_to_fee_recipient": "0",
"total_miner_reward": "1341445600000",
"fee_recipient_eth_diff": "1341445600000"
},
{
"transaction_hash": "0x02cbeb153f91225abcdad3cd4d39d457b5e13f3fb1191f26c73c328c50f54071",
"tx_index": 0,
"bundle_index": 19,
"block_number": 18975317,
"eao_address": "0x4a25D28d10B02BCF13a16068F56d167D8F96d093",
"to_address": "0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789",
"gas_used": 181502,
"gas_price": "12500000",
"coinbase_transfer": "0",
"eth_sent_to_fee_recipient": "0",
"total_miner_reward": "2268775000000",
"fee_recipient_eth_diff": "2268775000000"
},
{
"transaction_hash": "0x2b89ed3dbfe8946229468f33e31ed447631c192906344b7c62b6e927a7a5a512",
"tx_index": 12,
"bundle_index": 18,
"block_number": 18975317,
"eao_address": "0x4960DC043DDc244A02192898B3e2F1730194F0ac",
"to_address": "0xf2B2420CEff184EEc76B3de15bd90C5734e45449",
"gas_used": 21000,
"gas_price": "10000001",
"coinbase_transfer": "0",
"eth_sent_to_fee_recipient": "0",
"total_miner_reward": "210000021000",
"fee_recipient_eth_diff": "210000021000"
}
],
"latest_block_number": 18975317
}
}3. API URL: https://api.expand.network/chain/getflashbotbundle
Sample Request:
https://api.expand.network/chain/getflashbotbundle?bundleHash=0x2228f5d8954ce31dc1601a8ba264dbd401bf1428388ce88238932815c5d6f23fSample Response:
{
"status": 200,
"msg": "success",
"data": {
"transactions": [
{
"transaction_hash": "0xd9cdf1483a85aa206625c66fea49059b96ffae1c086f76664cfa3f91a495d73a",
"tx_index": 0,
"bundle_index": 3,
"block_number": 9091437,
"eao_address": "0x8D460B72eaF3d63830E16C22d1Fc6908D0834Abe",
"to_address": "0x8D460B72eaF3d63830E16C22d1Fc6908D0834Abe",
"gas_used": 21000,
"gas_price": "1000000000",
"coinbase_transfer": "0",
"eth_sent_to_fee_recipient": "0",
"total_miner_reward": "21000000000000",
"fee_recipient_eth_diff": "21000000000000"
}
]
}
}