Observability how-to guides
Step-by-step guides that cover key tasks and operations for adding observability to your LLM applications with LangSmith.
Tracing configuration
Set up LangSmith tracing to get visibility into your production applications.
Basic configuration
- Set your tracing project
- Trace any Python or JS Code
- Trace using the LangSmith REST API
- Trace without environment variables
Integrations
- LangChain OSS libraries
- LangGraph
- OpenAI
- Instructor
- Vercel AI SDK (JS only)
- OpenTelemetry
- OpenAI Agent SDK (Python only)
Advanced configuration
- Configure threads
- Set a sampling rate for traces
- Add metadata and tags to traces
- Implement distributed tracing
- Trace LangChain with OpenTelemetry (Python only)
- Access the current span within a traced function
- Log multimodal traces
- Log retriever traces
- Log custom LLM traces / provide custom token counts
- Prevent logging of sensitive data in traces
- Trace generator functions
- Calculate token-based costs for traces
- Trace JS functions in serverless environments
- Troubleshoot trace testing
- Upload files with traces
- Print out logs from the LangSmith SDK (Python Only)
- Troubleshooting: Missing or Misrouted Traces
Tracing projects UI & API
View and interact with your traces to debug your applications.
- Filter traces in a project
- Save a filter for your project
- Query / Export traces using the SDK (low volume)
- Bulk exporting traces (high volume)
- Share or unshare a trace publicly
- Compare traces
- View threads
Monitoring
Continuously monitor your production systems applications using dashboards, and set up alerts to get notified when metrics drop.
Automations
Leverage LangSmith's powerful monitoring, automation, and online evaluation features to make sense of your production data.