xyOps is a self-hosted, multi-server job scheduler and monitoring platform written in Node.js (CommonJS) with a browser-based single-page application. It is the successor to Cronicle and provides cron-like event scheduling, distributed job execution via WebSocket satellite agents, visual workflow orchestration, real-time server monitoring, alerting, ticketing, secrets management, and a plugin marketplace. The backend is organized around a central engine class (`lib/engine.js`) that mixes in modules for scheduling, job lifecycle, monitoring, alerts, maintenance, SSO, and API handling; the frontend uses a custom page framework with jQuery, CodeMirror, and WebSocket-driven live updates. In production, events are defined with triggers (schedule, interval, single, catchup, range, blackout), jobs are launched locally or on remote satellites, and job output is streamed via SSE/WebSocket. Monitoring data (CPU, memory, disk, processes) flows from satellites to the master, where JEXL expressions evaluate alert conditions and store multi-resolution timelines. The system persists to SQLite/Postgres/Redis via a custom storage abstraction (unbase) and supports import/export, snapshots, activity logging, and a plugin marketplace. Maintenance is active: frequent releases, CI workflows, security patching, and a comprehensive integration test suite are present. The codebase shows some technical debt—large monolithic files, duplicated CRUD patterns, callback-heavy async, and a custom UI framework—but the core architecture is modular, well-documented, and backed by a real test suite.