A is not a full block builder. Instead, it is a specialized, high-velocity engine designed to construct "miniblocks" or partial block bundles with extreme efficiency. These miniblocks are usually composed of time-sensitive transactions—often MEV strategies like arbitrage or liquidations—that must be executed within a single slot or even a sub-slot timeframe.
Use Go or Rust to create an RPC server that accepts eth_sendBundle requests but does not propagate them to the public mempool. flash minibuilder
Like the high-frequency trading (HFT) cables that run under the Atlantic Ocean, flash minibuilders are invisible yet essential. They ensure that when you click "swap" on your favorite DEX, the price is fair, the liquidation happens on time, and the blockchain remains solvent. A is not a full block builder
Establish direct TCP connections to validators' engine_api endpoints. Submit your miniblock as a engine_forkchoiceUpdated call with a payload attribute. Use Go or Rust to create an RPC