Mumu, an all-in-one productivity platform, migrated from Prometheus to InfluxDB 3 over three months, tripling their metric coverage from 150 to 560 metrics. The core motivation was a mismatch between Prometheus's pull-based model and Mumu's need to track discrete push-based events. The migration used a dual-write strategy via Vector, with ~80% of configuration and driver code generated by AI coding agents leveraging InfluxDB's published OpenAPI spec. Validation involved side-by-side Grafana panels comparing both systems. Key benefits included a dramatically lower instrumentation cost (adding a metric became a single HTTP call), SQL support for ad-hoc querying, and new observability use cases like CI/CD pipeline tracking, per-developer environments, and server command monitoring. Future plans include integrating InfluxDB as a delivery target in their MsgGO notification product and migrating user-activity data from NoSQL.