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OpenFedNow Wiki

OpenFedNow is an open-source middleware framework (Apache 2.0) that connects legacy core banking systems to the Federal Reserve's FedNow Instant Payment Service — without modifying the core banking system.

Pages

Page	Contents
Getting Started	Run the app locally in under 5 minutes
Architecture	Five-layer design and how the layers interact
Configuration Reference	All environment variables and Spring profiles
Deployment Guide	Helm chart usage for Kubernetes / OpenShift
Development Roadmap	What's implemented, what's planned
API Reference	REST endpoints and ISO 20022 message models

At a Glance

FedNow Service (Federal Reserve)
        │  ISO 20022 / HTTPS
        ▼
Layer 1 — API Gateway & Security         ← FedNow PKI, pacs.008 routing
        │
Layer 2 — Anti-Corruption Layer          ← ISO 20022 ↔ vendor translation
          [ Fiserv │ FIS │ Jack Henry ]
        │
Layer 3 — Real-Time Processing Engine    ← Saga, Idempotency, Circuit Breakers
        │
Layer 4 — Shadow Ledger & 24/7 Bridge    ← Maintenance-window handling, RabbitMQ
        │
Layer 5 — Legacy Core Banking            ← Unchanged: Fiserv, FIS, Jack Henry

Quick Links

• GitHub Repository
• Contributing Guide
• Open Issues
• Apache 2.0 License