OpenTelemetry Instrumentation Extension

Once the mod is loaded on a dedicated server, the OpenTelemetry Java Agent picks up extra game measurements: loaded chunks, overall server state, packets sent and received, and chunk generation. These values are reported as metrics, logs and traces, which OpenTelemetry describes as the de facto industry standard for monitoring data.

The mod sits on the server side only, so players connect without installing anything. Its overall functionality is similar to fabric-exporter. A development setup with a locally running deployment of the full monitoring infrastructure is included in the repository, and a diagram shows how the pieces fit together. The mod is released under the GNU Lesser General Public License v3.0 or later, and its source code and issue tracker are public. spark is an optional dependency that some setups pair with it for profiling.

Configuration is loaded dynamically and sorted by priority, and the full list of options is documented. Defaults are typically ready to use as they are, but the author notes that changes should only be made by someone who knows exactly what the settings do. The mod covers game versions 1.21.4 – 26.3 across 13 release versions, with snapshot builds also published.