# otel_plug v1.3.1 - Table of Contents > An OpenTelemetry Plug middleware for instrumenting HTTP requests in Elixir applications using the Plug framework. ## Pages - [OpentelemetryPlug](readme.md) ## Modules - [OpentelemetryPlug](OpentelemetryPlug.md): Telemetry handler for creating OpenTelemetry Spans from Plug events. - [OpentelemetryPlug.Propagation](OpentelemetryPlug.Propagation.md): Adds OpenTelemetry context propagation headers to the Plug response. - [OtelResourceDynatrace](OtelResourceDynatrace.md): Extra metadata for Dynatrace This module has been created based on the documentation available at: https://docs.dynatrace.com/docs/ingest-from/extend-dynatrace/extend-data