LangChain Observability

Contents

• Overview
• Prerequisites
• Instructions
• Output
• Error Handling
• Examples
• Resources

Overview

Set up comprehensive observability for LangChain applications with LangSmith, OpenTelemetry, Prometheus, and structured logging.

Prerequisites

• LangChain application in staging/production
• LangSmith account (optional but recommended)
• Prometheus/Grafana infrastructure
• OpenTelemetry collector (optional)