rbuilder

MEV-Boost is a validator sidecar that sources blocks from a competitive marketplace of builders and relays under proposer-builder separation. Validator operators run it alongside their consensus client to receive externally built blocks.

Commit-Boost is a validator sidecar that runs MEV-Boost together with other community-built commitment protocols. Validator operators run it instead of the plain sidecar when they want to take on commitments beyond block sourcing.

rollup-boost is a sidecar for OP Stack sequencers that adds MEV-Boost style external block building to a rollup. Sequencer operators run it when blocks should come from outside builders.