Deadpipe introduces dead-man’s-switch monitoring for data pipelines. Pipelines send one heartbeat when they finish. No heartbeat means failure. No polling, agents, or complex setup. One-line SDKs auto-register pipelines and never break jobs. Deadpipe adds automatic data freshness scoring to detect staleness before data is broken. It also unifies pipeline monitoring with frontend API, performance, and Web Vitals monitoring in one low-cost product.