The Elixir PromEx library, developed by Alex Koutmos, is designed to seamlessly integrate Prometheus metrics with Grafana dashboards, specifically catering to the Elixir and Erlang ecosystem. PromEx utilizes the BEAM Telemetry tools to consistently capture and surface internal library events, allowing users to attach Prometheus metrics collectors to these events through a plugin-based framework. With PromEx, users can quickly set up dashboards for various Elixir libraries like Phoenix, Ecto, and Oban, leveraging the Grafana HTTP API to streamline dashboard deployment and lifecycle management. This integration not only automates the visualization of metrics but also addresses common challenges such as manual dashboard updates and environment-specific configurations, ensuring that the lifecycle of dashboards aligns with application versions. PromEx aims to expand its capabilities by adding more plugins and integrating with the OpenTelemetry Erlang/Elixir project, highlighting its potential applicability beyond the Elixir ecosystem.