langchain-observability

Quick Review

Excellent observability skill with comprehensive implementation details covering LangSmith, Prometheus, OpenTelemetry, structured logging, Grafana dashboards, and alerting. The description clearly indicates when to use this skill with specific trigger phrases. Task knowledge is exceptional with complete, production-ready code for all major observability components including custom callbacks, metrics definitions, and alert configurations. Structure is clear with logical step-by-step progression, though could benefit from separating large code blocks into referenced files for a more modular approach. Novelty is moderate-to-good: while observability setup is common, integrating multiple monitoring systems specifically for LangChain with custom callbacks represents meaningful value that would require substantial token usage and research for a CLI agent to replicate from scratch. Minor deduction for structure as consolidating all implementations in SKILL.md makes it lengthy, though this is offset by clear organization.