Live Metric Registry: find and understand observability metrics across your stack
Introducing Metric Registry: a live, searchable catalog of 3,700+ observability (and rapidly growing) metrics extracted directly from source repositories across the OpenTelemetry, Prometheus, and Kubernetes ecosystems, including cloud provider metrics. Metric Registry is open source and built to stay current automatically as projects evolve.
What you can do today with Metric Registry
Search across your entire observability stack. Find metrics by name, description, or component, whether you're looking for HTTP-related histograms or database connection metrics.
Understand what metrics actually exist. The registry covers 15 sources including OpenTelemetry Collector receivers, Prometheus exporters (PostgreSQL, Redis, MySQL, MongoDB, Kafka), Kubernetes metrics (kube-state-metrics, cAdvisor), and LLM observability libraries.
See which metrics follow standards. Each metric shows whether it complies with OpenTelemetry Semantic Conventions, helping you understand what's standardized versus custom.
Trace back to the source. Every metric links to its origin: the repository, file path, and commit hash. When you need to understand a metric's exact definition, you can go straight to the source.
Trust the data. Metrics are extracted automatically from source code and official metadata files, and the registry refreshes nightly to stay current as projects evolve.
Can't find what you're looking for? Open an issue or better yet, submit a PR to add new sources or improve existing extractors.
Sources already indexed
| Category | Sources |
|---|---|
| OpenTelemetry | Collector Contrib, Semantic Conventions, Python, Java, JavaScript |
| Prometheus | node_exporter, postgres_exporter, redis_exporter, mysql_exporter, mongodb_exporter, kafka_exporter |
| Kubernetes | kube-state-metrics, cAdvisor |
| LLM Observability | OpenLLMetry, OpenLIT |
| CloudWatch | RDS, ALB, DynamoDB, Lambda, EC2, S3, SQS, API Gateway |