# Week 13

This week I continued work on the Sync Committee Pool. First I created a new SyncCommitteePool crate (`crates/common/sync_committee_pool/src/lib.rs`). It manages raw messages and aggregated contributions with capacity safeguards, `aggregation_bits` tracking, and BLS signature aggregation, enabling us to surface the “best” contribution per key. Then I wired the pool into the validator RPC path so `GET /eth/v1/validator/sync_committee_contribution` now returns pre-aggregated data. Supporting changes touched the `OperationPool`, fork choice, networking, and the CLI to integrate the pool and expose the endpoint configurations.

## Learnings
- **Sync committee aggregation nuances:** Hard-capped storage plus “best aggregate” selection keeps the pool efficient while still serving high-participation contributions.
- **Endpoint safeguards:** Enforcing fork-choice and slot bounds in the validator handler ensured the endpoint is spec-compliant.

## Next Steps
- Integrate the pool with the previous endpoint [Implement /eth/v1/beacon/pool/sync_committees](https://github.com/ReamLabs/ream/issues/215) which I worked on and validate gossip ingestion paths end-to-end.
- Work on other Sync Committee-related endpoints or Sync Committee-related open issues on networking layer.