Mehdi Nemlaghi developed the AgentCore Session Investigation skill for the awslabs/mcp repository, focusing on enhancing observability and traceability in CloudWatch MCP server workflows. Leveraging AWS, CloudWatch, and OpenTelemetry, Mehdi implemented session-to-trace resolution through span correlation, enabling operators to efficiently map sessions to traces. He created reusable CloudWatch Logs Insights templates in both structured and glob-style formats, and introduced noise-filtering heuristics to improve log analysis quality. The work included Bash and JSON for scripting and configuration, as well as Markdown for documentation, resulting in improved investigation speed, maintainability, and onboarding through targeted code cleanups and comprehensive setup guides.