When I started building applications on the XRP Ledger, I kept running into the same problem. Every XRPL developer was building their own event listener from scratch — monitoring wallet activity, watching for specific transactions, tracking network state changes. The implementations were consistently brittle: no retry logic, no dead-letter queues, minimal monitoring. Developers would write a basic WebSocket listener, maybe add some error handling, and call it done.
This approach works until it doesn't. Network hiccups cause missed events. Server restarts lose connection state. Failed webhook deliveries disappear into the void. You end up with gaps in your data and no reliable way to recover.
XRNotify solves this by providing enterprise-grade webhook infrastructure specifically for XRPL developers. Instead of building and maintaining your own listener infrastructure, you configure XRNotify to monitor the events you care about and deliver them to your endpoints with proper reliability guarantees.
The Technical Problem
The XRPL provides real-time data through WebSocket connections, but turning that into reliable webhook delivery requires solving several infrastructure challenges:
Connection Management: Maintaining persistent WebSocket connections to XRPL nodes, handling reconnection logic, managing subscription state across network failures.
Event Processing: Filtering and transforming raw XRPL data into structured webhook payloads. Supporting different event types — wallet activity, transaction confirmations, network state changes, validator updates.
Delivery Reliability: Implementing exponential backoff retry logic, dead-letter queues for permanently failed deliveries, signature verification for payload authenticity.
Scale and Performance: Handling thousands of concurrent webhook subscriptions, processing high-volume transaction streams, maintaining sub-second delivery latencies.
Most developers don't want to solve these problems. They want to focus on their application logic, not infrastructure.
Architecture Decisions
XRNotify is built on Next.js 14 with PostgreSQL for persistence and Redis for caching and job queuing. The core event processing runs on Node.js workers that maintain persistent connections to multiple XRPL nodes.
The worker architecture separates concerns cleanly. Connection managers handle WebSocket lifecycle and reconnection logic. Event processors transform raw XRPL data into structured payloads. Delivery workers handle webhook dispatch with retry logic and failure tracking.
We support 22+ event types across 7 categories: wallet activity, transaction events, network state, validator updates, amendment tracking, order book changes, and system health metrics. Each event type has its own processing pipeline with appropriate filtering and transformation logic.
Every webhook payload includes HMAC-SHA256 signature verification. Delivery failures trigger exponential backoff retry with jitter to prevent thundering herd problems. After exhausting retries, failed deliveries move to a dead-letter queue where they're available for manual inspection and redelivery.
Ecosystem Integration
XRNotify isn't just standalone infrastructure — it's a data source for the broader Jonomor ecosystem. Network state data flows to The Neutral Bridge for financial infrastructure research. Transaction anomaly patterns feed into H.U.N.I.E.'s intelligence layer. The real-time event stream powers circuit breaker functionality in H.U.N.I.E. Sentinel.
This integration creates a feedback loop. As XRNotify processes more XRPL events, it improves the intelligence available to other Jonomor products. As those products identify new patterns, they can configure additional monitoring through XRNotify.
Implementation Details
The webhook delivery system uses a multi-tier retry strategy: immediate retry for transient failures, exponential backoff for persistent failures, and dead-letter storage for permanent failures. Redis job queues handle the retry scheduling with proper priority and rate limiting.
For high-volume subscriptions, we batch webhook deliveries when possible while maintaining event ordering guarantees. The system tracks delivery metrics per endpoint and automatically adjusts retry parameters based on observed reliability patterns.
Security is built-in, not bolted-on. Every payload is signed with HMAC-SHA256 using per-webhook secrets. We support IP allowlisting and can restrict webhook deliveries to specific network ranges.
XRNotify provides the infrastructure layer the XRPL ecosystem was missing. Instead of building unreliable listeners, developers can focus on their applications while trusting that critical events will be delivered reliably.
Check it out at https://www.xrnotify.io.
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