eth_sendEndOfBlockBundle

This endpoint requires a valid X-Flashbots-Signature header to be included.

After building a block, any end-of-block bundle that contains a target pool that has been modified will be simulated at the end-of-block state. Successfully simulated bundles are then added to the block.

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_sendEndOfBlockBundle",
  "params": [
    {
      txs,                  // Array[String], A list of signed transactions to execute in an atomic bundle, list can be empty for bundle cancellations
      blockNumber,          // (Optional) String, a hex-encoded block number for which this bundle is valid. Default, current block number
      revertingTxHashes,    // (Optional) Array[String], A list of tx hashes that are allowed to revert or be discarded
      targetPools,          // Array[String], A list of pool addresses that this bundle is targeting
      replacementUuid,      // (Optional) String, UUID that can be used to cancel/replace this bundle
      replacementSeqNumber, // (Optional) Number, monotonically increasing sequence for bundles sharing the same replacementUuid. Later bundles must have a higher sequence or they are dropped. If 0 or omitted, ordering falls back to builder receive time
    }
  ]
}

Example response

{"jsonrpc":"2.0","result":null,"id":1}