Usage Anomaly Detection — Flags usage patterns that look wrong — a 40x spike, a meter flatlining, a customer suddenly at zero — before they become billing disputes. It watches the aggregated stream and routes findings to billing ops and customer success.
Usage Anomaly Detection lives in the Consume & Meter phase of Fulfill & Bill — the stage where you activate what was sold, meter what's used, bill it right. In the corpus tool index this phase maps to the Meteringcategory.
No product category maps cleanly onto this module yet — companies typically build it in-house or cover it with adjacent tooling. See who builds vs buys across the corpus.