develop-relayer

Use when the user wants to fork or extend the reference Rust axum relayer — checkpoint backfill/resume so events aren't dropped on restart, custom storage backend (PostgreSQL, S3, …), new routes/handlers (e.g., a relayer-side Group Discovery endpoint backed by the groups index), sponsor-key strategy, operator policy (rate limiting, tenant scoping, abuse mitigation), or running it inside Nautilus. Trigger phrases - "extend the relayer", "fork the relayer", "add storage to relayer", "custom relayer handler", "PostgreSQL relayer", "relayer rate limiting", "checkpoint backfill", "checkpoint resume", "relayer missed events", "multi-tenant relayer", "relayer operator policy", "relayer abuse mitigation", "relayer group discovery endpoint", "expose memberships endpoint".