MEV Protection

MEV protection lets you shield transactions from front-running, sandwich attacks, and other value extraction methods. It currently applies to Ethereum mainnet, BNB Smart Chain mainnet, Arbitrum mainnet, and Base mainnet.

How it works

• You construct and sign your transaction as usual and send it through your Chainstack endpoint. This is sent as eth_sendRawTransaction.
• Instead of broadcasting to the global mempool, the proxy forwards it to the partner network for direct inclusion consideration by block builders.
• A builder includes your transaction in a block. Once confirmed, it appears on-chain as normal.

If you have the transaction hash, you can retrieve it from the private pool with the regular eth_getTransactionByHash, but only through the same Chainstack node endpoint you used to submit the transaction. Once the transaction is in the block, you can retrieve it using all regular methods.

Benefits

• Reduced front-running risk — your transaction isn’t visible in the public mempool, minimizing the chance of adversary trades.
• Reliable delivery — direct builder routes ensure predictable inclusion.