LangWatch
Agent observability with tracing, analytics, and simulation-style testing.
Open source
Best when teams want to monitor conversations and agent flows while iterating on guardrails and scenarios.
Selection advice
Choose LangWatch when you care about product-visible agent behavior, not only low-level span inspection.
Best for
- conversation-level agent monitoring
- scenario testing alongside traces
- TypeScript-first agent stacks
Not ideal for
- teams that only need raw OpenTelemetry export
- Python-only stacks without TS integration path
Core concepts
tracesanalyticsscenariosevaluations
Minimal implementation shape
Trace a support agent workflow, review failed conversations in analytics, and replay the scenario after prompt changes.