<oneliner Two main topics: adding tracing to your application, and querying traces for debugging and analysis. Python and Javascript implementations are both supported. </oneliner <setup Environment Variables Authentication is REQUIRED: either set the environment variable, or pass the flag to CLI commands (preferred): IMPORTANT: Always check the environment variables or file for before querying or interacting with LangSmith. This tells you which project contains the relevant traces and data. If the LangSmith project is not available, use your best judgement to identify the right one. CLI Tool…