Telemetria

automates function-level :telemetry emission in Elixir using declarative annotations and compile-time macros.

The Pitch

Adding observability to existing Elixir applications often requires cluttering business logic with repetitive calls to :telemetry.execute/3 . Missing execution timings, uncaptured function arguments, or omitted error events make production troubleshooting painful.

Telemetria solves this with single-line @telemetria annotations. Annotate any Elixir function, and Telemetria automatically generates compile-time wrappers that emit standardized telemetry events—capturing duration, execution state, arguments, and returned results cleanly.

Why Telemetria?

Zero-Boilerplate Annotations

Just write @telemetria true or @telemetria level: :info above your functions.

Automatic Event Generation

Emits start, stop, and exception telemetry events with execution timing in microseconds.

Compile-Time Optimization

Zero runtime cost when disabled in specific environments (e.g., test or benchmark environments).

Flexible Metric Handlers

Integrates seamlessly with standard :telemetry_metrics , TelemetryUI, and OpenTelemetry.

The Tech

Who It's For

• Elixir Developers wanting transparent observability without polluting core module functions.
• Microservices & API Authors tracking execution latencies across internal domain functions.
• SRE & Operations Engineers building custom metrics pipelines over standard :telemetry events.

Bottom Line

Instrument Elixir functions with compile-time telemetry in a single annotation—clean, zero-boilerplate observability.