# Mastra Observability Observability is [[Mastra AI]]'s visibility layer over everything agents and workflows do, essential for debugging, cost control, and production reliability. It is a Mastra-specific implementation of general [[AI Observability]]. ## Three signals - **Tracing**: hierarchical spans recording inputs, outputs, token usage, and timing - **Logging**: auto-correlated to traces - **Metrics**: duration, token usage, cost Backends include DuckDB, LibSQL, and ClickHouse, with external integrations (Langfuse, Datadog, OpenTelemetry). ## References - https://mastra.ai/docs/observability/overview ## Related - [[Mastra AI]] - [[AI Observability]] - [[Mastra Evals]] - [[Mastra Studio]]