Skip to main content
Network infrastructure
CROPS Native

mev-boost-relay (Flashbots)

MEV & block building

View on GitHub (opens in a new tab)

See next

Commit-Boost

About mev-boost-relay (Flashbots)

mev-boost-relay is the reference relay server for MEV-Boost proposer-builder separation, run by relay operators rather than validators. A team standing up its own relay runs this implementation.

Tags

  • DevOps
  • Networking

Repositoryflashbots

Info

Type
MEV & block building
GitHub stars
500
License
AGPL-3.0
Listing reviewed
September 2026

Similar tools

MEV-Boost

MEV-Boost

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.

rbuilder

rbuilder

rbuilder is a Rust MEV-Boost block builder that constructs blocks and submits them to relays. Teams that build blocks run it directly or fork it as the base for their own builder.

rollup-boost

rollup-boost

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.