# Arbitrum Integration Enhancement Plan

## Goal
Ensure all Arbitrum network integrations (sequencer monitor, ABI decoders, RPC failover) are production-grade and resilient.

## Tasks

1. **Sequencer & Parser**
   - [ ] Validate `monitor.ArbitrumMonitor` handles all transaction types; add tests with real block samples.
   - [ ] Remove placeholder logging in `createArbitrumMonitor`, confirm default path uses full sequencer reader.

2. **ABI Decoding**
   - [ ] Expand coverage in `pkg/arbitrum/parser` for multicall variants, custom protocols.
   - [ ] Add fuzz/property tests for decoder correctness.

3. **Connection Management**
   - [ ] Audit `pkg/arbitrum/connection.go` for failover, rate limiting, and health checks.
   - [ ] Document required environment variables (`ARBITRUM_RPC_ENDPOINT`, `ARBITRUM_WS_ENDPOINT`), default policies.

4. **Logging & Metrics**
   - [ ] Ensure errors and reconnection attempts emit structured logs and Prometheus metrics.

5. **Docs**
   - [ ] Update `docs/6_operations/DEPLOYMENT_GUIDE.md` with operator steps for Arbitrum endpoints.

## References
- `pkg/arbitrum`, `pkg/monitor`
- `docs/6_operations`