Utilities
Protocol-facing (B2B)

Protocol-facing (B2B)

Feeds other protocols can consume directly.

Utilities

UtilityData sourceThird-partySelf-hosted
Collateral Haircut Feed — lending protocols widen haircuts while the exchange is closedRiskFeed on-chainGas (ops cost)Publisher worker
Corporate Action Feed (JSON/ICS)Corporate Action ExtractorStatic file serving from the main binary
Halt Mirror — mirror NYSE/Nasdaq halts as an on-chain feedExchange halt noticesNasdaq Trader + NYSE halt feed (free)Poller worker
LP Toxicity Dashboard — which pools get picked off by informed flow overnightSwap indexer + oracle midHeaviest load — needs per-swap attribution

One of these is not like the others

LP Toxicity Dashboard is the expensive one

Per-swap attribution against the oracle mid at execution time pushes storage and CPU well beyond what the core risk engine needs. Build it once an LP actually asks for it, not before.