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The Observability skill empowers Claude to architect and implement the three pillars of system visibility—logs, metrics, and traces—within your codebase. It provides expert guidance on structured logging with Pino and Winston, metric collection using Prometheus or DataDog, and distributed tracing via OpenTelemetry. Whether you are setting up Service Level Objectives (SLOs), designing actionable alerts to prevent alert fatigue, or debugging complex production issues using correlation IDs, this skill ensures your applications meet production-grade standards for reliability and maintainability.