When an Express service starts failing, the first signal is often a noisy terminal, a long log stream, or a customer report.
I built Wotchi as a small, in-process alerting layer for Node.js services. It removes sensitive values, groups repeated failures, and sends bounded alerts to a destination you already use—without requiring a hosted dashboard or a new observability account.
In this tutorial, we will add Wotchi to a small Express API and send a useful alert when a route fails.
Wotchi is currently a public beta (0.1.0-beta.6), so its API may change before the first stable release.
What we are building
