Etsy Loupe

The devops team over at Etsy have released some code for a project they call Loupe. It’s made up of two parts, Skyline and Oculus, and their goal is to automatically detect anomalous metrics. Monitoring is great, but kind of useless if no one is watching.

etsy loupe screenshot

Skyline does the detection and Oculus attempts to correlate an errant metric with other errant metrics.

They’ve released both of these projects on GitHub ( and

Via Code as Craft.