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.
Official resources
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.