OPENAI_API_KEY="" SERPER_API_KEY="" BRAINTRUST_PARENT="project_name:crewai-book-flow" BRAINTRUST_API_KEY="" ENVIRONMENT="DEV" # Disable CrewAI's built-in telemetry to avoid duplicate/orphaned traces # We use our custom BraintrustInstrumentor for proper trace hierarchy CREWAI_DISABLE_TELEMETRY="true"