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Node Operators

Please coordinate with us to register your validator set with our registry service. We will provide you with the necessary information to get started.


Connecting to the relay without being registered will result in your validator operating correctly so long as MEV Boost is also running.

Holesky Information


  • Beta bundle RPC (Testnet):

    • Description: Beta bundle submission RPC
    • URL:
    • Method: mev_sendBetaBundle
    • Parameters:
      • txs: List of txs as bundle e.g. [0x2323...,]
      • slot: slot number e.g. "11282389"
    • ChainId: 17000

Builders and searchers

Aquire some Holesky Testnet ETH through a faucet in the resources listed below. If you are unable to secure enough, please reach out to us.


L2 Auctioneer: 0x82052435119AedBEC6e237B5414880bF388F1B63

L2 SettlementHouse: 0x513844F4425d54beC19B0594AE072e49bEbBF388

L1StandardBridgeProxy: 0x3Ae5Ca0B05bE12d4FF9983Ed70D86de9C34e820C

To monetize yourself on L2, send some ETH on L1 (Holesky) to 0x3Ae5Ca0B05bE12d4FF9983Ed70D86de9C34e820C