Chainstack documentation

# MEV API

For information on MEV and the Flashbots organization, see Flashbots Docs (opens new window).

Chainstack supports the MEV Geth implementation on the following Ethereum networks:

  • Mainnet — simulate against the main chain with a Chainstack MEV node and send the transaction through the Flashbots relay at relay.flashbots.net.
  • Goerli testnet — simulate against the Goerli chain with a Chainstack MEV node and send the transaction through the Flashbots relay at relay-goerli.flashbots.net

The lifecycle of a MEV transaction is the following:

  1. Simulate a transaction before sending it to the miners to determine if the transaction is profitable. The simulation takes time and this where you use a Chainstack MEV node to save the time.
  2. Send the simulated transaction through the Flashbots relay.

# Example

Simulate a transaction with eth_callBundle (opens new window):

curl -X POST -H 'Content-Type: application/json' --data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "eth_callBundle",
    "params": [
        {
            "txs": [
                "RAW_TRANSACTION"
            ],
            "blockNumber": "HEX_BLOCK_NUMBER",
            "stateBlockNumber": "HEX_BLOCK_NUMBER"
        }
    ]
}' ENDPOINT

where

  • RAW_TRANSACTION — the signed raw transaction.
  • HEX_BLOCK_NUMBER — the block number in hex against which to simulate the transaction.
  • ENDPOINT — your node HTTPS endpoint.

See also View node access and credentials.

For example, simulate this MEV transaction on Goerli (opens new window) against block 7073267:

curl -X POST -H 'Content-Type: application/json' --data '{
    "id": 1337,
    "jsonrpc": "2.0",
    "method": "eth_callBundle",
    "params": [
        {
            "txs": [
                "0xf85f170a82a7f894957b500673a4919c9394349e6bbd1a66dc7e593980802ea058b46cd5d058d30f61b68222c1e1ff57baba627d9e6277e297db65b711c312b4a040fe3aff8be3730987b6e9a458277cd20df1e7a3bf02a4cd6071489f9bf37184"
            ],
            "blockNumber": "0x6BEDF3",
            "stateBlockNumber": "0x6BEDF3"
        }
    ]
}' https://nd-123-456-789.p2pify.com/3c6e0b8a9c15224a8228b9a98ca1531d

See also