Repository navigation
Add support for epbs builder server following builder-spec for glamsterdam #877
Description
Implement a builder server for ePBS following the ethereum/builder-specs#138 for gloas fork
On highlevel this enables :
- proposers to directly fetch
execution_payload_bidfrom rbuilder via/eth/v1/builder/execution_payload_bid/{slot}/{parent_hash}/{parent_root}/{proposer_index} - rbuilder to publish
execution_payloadvia beacon-api endpoint/eth/v1/beacon/execution_payload_envelopewhen the proposer includes the bid in the beacon block
References
Activity
Zyra-V21 commentedon Oct 13, 2026
Hi Zyra from MigaLabs here! Quick question on rbuilder and ePBS: is #855 still the plan for Gloas, or is there newer work somewhere? We're looking at running a builder on Sepolia and would rather align with you than go our own way.
@faheelsattar @ZanCorDX
Zyra-V21 commentedon Oct 13, 2026
Also, it looks like the spec has changed quite a bit since #855, so it wouldn't work on Sepolia as is rn. Happy to help bring it up to date. How would you like to coordinate?